Academic literature on the topic 'Coastal erosion Assessment'
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Journal articles on the topic "Coastal erosion Assessment"
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Park, Seon Jung, Heui Jung Seo, Seung Min Park, Seol Hwa Park, Ike Jang Ahn, and Gyeong Sik Seo. "The Analysis of Coastal Erosion and Erosion Impact Assessment in the East Coast." Journal of Korean Society of Coastal and Ocean Engineers 33, no. 6 (December 31, 2021): 246–56. http://dx.doi.org/10.9765/kscoe.2021.33.6.246.
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Various development projects occurring on the coast cause an imbalance of surface sediments, causing coastal disasters or irreversible coastal erosion. Coastal erosion caused by the influence of various port structures built through coastal development can be directly identified by evaluating changes in the sediment budget, long-shore sediment, and cross-shore sediment. In other words, it will be possible to evaluate the causality between coastal development and coastal erosion by classifying regions due to single cause and regions due to multiple causes according to the changes in the sediment classified into the three types mentioned above. In this study, the cause of long-term and continuous erosion was analyzed based on the analysis results of the coastal development history and the Coastal Erosion Monitoring targeting the coast of Gangwon-do and Gyeongsangbuk-do on the east coast. In addition, in order to evaluate the degree of erosion caused by the construction of artificial coastal structures, the concept of erosion impact assessment was established, three methods were proposed for the impact assessment. The erosion impact of Hajeo port was assessed using the results of satellite image analysis presented in the Coastal Erosion Monitoring Report, it was assessed that the development of Hajeo port had an impact of 93.4% on erosion, and that of the coastal road construction had an impact of 6.6%.
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E SOUZA, CELIA REGINA DE GOUVEIA. "Coastal Erosion Risk Assessment, Shoreline Retreat Rates and Causes of Coastal Erosion Along the State of São Paulo Coast, Brazil." Pesquisas em Geociências 28, no. 2 (December 31, 2001): 459. http://dx.doi.org/10.22456/1807-9806.20320.
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Monitoring on coastal erosion problems along the São Paulo shoreline have been carrying out by the author since mid the 80’s, including almost 87% of the whole 430 km length of sandy beaches. Eleven types of indicators of coastal erosional processes have been recognized, which have been attributed to seventeen causes, among them ten correspond to natural mechanisms and seven are due to anthropogenic interference. In this paper is presented rates of shoreline retreat based on the Bruun Rule application for six of the most threatened beaches, for a period as long as 56 years. Risk assessment is also estimated for these six beaches based on two criteria: (i) the total number (sum) of types of coastal erosion indicators found along the shoreline (frequency among the 11 types) and (ii) general spatial distribution (percentage of surface area) of coastal erosion indicators along the shoreline. Causes and effects of the coastal erosional processes are discussed for these six beaches. Results reveal high rates of shoreline retreat, even in non-urbanized areas, as well demonstrate that the six beaches are at very-high risk. Moreover, they indicate that natural mechanisms are very important as cause of coastal erosional processes in São Paulo, sometimes most them the human-induced causes. These studies have widely been supporting the State Plan for Coastal Zone Management, in order to create special rules for occupation and some activities along the shoreline, including engineering works, building and sand beach exploration. Besides, results are being recorded in a geoenvironmental information system for the Coastal Zone of the State of São Paulo (Project SIIGAL), which is in phases of implantation.
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Mohd, Fazly Amri, Mohammad Aiman Azizi, Rohayu Haron Narashid, Noorfatekah Talib, Nor Aizam Adnan, Haris Abdul Rahim, and Khairul Nizam Abdul Maulud. "Assessment of Coastal Landscape Along Kelantan Coast Using Geospatial Techniques." IOP Conference Series: Earth and Environmental Science 1019, no. 1 (April 1, 2022): 012036. http://dx.doi.org/10.1088/1755-1315/1019/1/012036.
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Abstract The social and economic development from the coastal area benefits human life. However, growing human and environmental pressures at coastal areas also bring significant impacts on coastal erosion and coastline changes. Nowadays, geospatial technology which utilized remote sensing and GIS techniques has been widely used to detect coastal erosion for controlling the development and coastal region sustainability. Thus, this study was conducted to assess the coastal erosion and accretion for the potential risk zone based on the characteristics of the landscape and land use land cover (LULC) at the Kelantan Coast using land use classification and GIS spatial interpolation techniques. In this study, the vulnerability level of the coastal profile at the Kelantan coast was determined from the beach profile survey and the Inverse Distance Weighting (IDW) interpolation method. Then, the Land Use Land Cover (LULC) along a 1 km buffer zone were classified by performing a supervised classification method on Sentinel 2 satellite images year 2020. The effect of these parameters on coastal erosion was determined from separated five management units (MU 1, MU 2, MU 3, MU 4, MU 5) along the Kelantan Coast based on the Malaysian Department of Irrigation and Drainage (DID). It is found that MU 3 (0.8%) and MU 5 (0.6%) were the area with the lowest average slope profile percentages which is located at Pantai Sabak and Pantai Kemayang respectively. Thus, the infrastructure, LULC and coastal communities in Pantai Sabak and Pantai Kemayang were potentially vulnerable to erosion. This finding supports the significant use of geospatial techniques of important decision-making to protect and mitigate steps toward sustainable coastal management along the coastline.
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Huang, Wei-Po, Chun-Jhen Ye, and Jui-Chan Hsu. "Forecasts of the Compound Coastal Erosion Risks Based on Time-Variant Assessment: A Case Study on Yunlin Coast, Taiwan." Sustainability 14, no. 21 (November 4, 2022): 14505. http://dx.doi.org/10.3390/su142114505.
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A coastal erosion risk assessment was framed as the basis for the intervention of coastal adaptation strategies under time-variant scenarios. The framework was devised to assess the influence of coastal erosion on coastal defense, the coastal inundation induced by the erosion-induced malfunction of defense, and risks using a downscaling analysis and the mechanism of the compound hazard interaction, which are innovative and practical for the application of coastal management in Taiwan. In addition, the vulnerable socio-economy was also taken into consideration in risk assessment. The adaptive strategy is proposed in terms of the risk origins and time-variance of risk forecasts, and the risk origins were assessed based on the Fuzzy Delphi Method and the analytic hierarchy process instead of subjective consideration. Within the erosion-induced hazard and risk assessments, this study considered erosion rates, decreases in defense elevation due to land subsidence, and population development in time-variant scenario analyses to estimate risk forecasts. Furthermore, a case study of the Yunlin coastal area was undertaken to demonstrate the feasibility of the proposed method. The presented results are informative for coastal hazard reduction and the promotion of the sustainable development of coastal zones.
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Marfai, Muh Aris. "Preliminary assessment of coastal erosion and local community adaptation in Sayung coastal area, central java – Indonesia." quageo 31, no. 3 (October 1, 2012): 47–55. http://dx.doi.org/10.2478/v10117-012-0028-2.
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Abstract . Dynamic environment in coastal area, especially due to coastal erosion process, has negative impact on human environment. Sayung coastal area, located in Central Java-Indonesia, has experienced severe impact of coastal erosion. As the result of the coastal erosion, hundreds of settlement located in coastal area has been destructed. Moreover, fishponds as the land use dominated in the coastal area also has been severely destroyed. Besides the coastal erosion, increasing of inundated area due to sea level rise also threaten the local community. Although devastating impact suffering the coastal area, the people of Tambaksari, as the part of Sayung area, decided to live and adapt with the coastal erosion. This paper aims to identify the coastal erosion and understand adaptation strategies held by the local community related to reduce the impact of the coastal erosion. Based on this research, various adaptation strategies has been identified, namely (1) Planting mangrove alongside the shoreline, (2) elevating the ground level, (3) building staged house, (4) utilizing deep well for freshwater supply, (5), maintaining social interaction with mainland community, (6) Collecting fish from the mangrove as the food, and (7) changing work into the tourism sector.
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Xu, Lifen, Shiyong Wen, Dongzhi Zhao, and Xuegong Xu. "On the coastal erosion risk assessment indexes." Journal of Risk Analysis and Crisis Response 3, no. 3 (2013): 146. http://dx.doi.org/10.2991/jrarc.2013.3.3.4.
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Ghiffari, Rizki Adriadi, and Haryo Dwito Armono. "Coastal erosion risk assessment in the coastal area of Muara Asam Asam, Tanah Laut Regency." E3S Web of Conferences 325 (2021): 01023. http://dx.doi.org/10.1051/e3sconf/202132501023.
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Coastal erosion is the process of land erosion in coastal areas due to waves and ocean currents which reduce land and can adversely affect socio-economic activities in coastal areas. Coastal erosion risk assessment in the estuary is a development of previous research, because the erosion and accretion processes do not only occur along the shoreline, but also on the side facing river water bodies, due to the confluence of fluvial and marine processes. The landward shift of the shoreline in the Muara Asam Asam coastal area has reached 90 meters in the last 28 years, and has been detrimental because the area is a densely populated area with major economic activities in the fisheries and agriculture sectors. This study aims to determine the coastal erosion risk level zones based on the relationship among vulnerability and consequence parameters, through distance decay weighted based method. The results indicate that Muara Asam Asam has high risk zones of coastal erosion, especially in densely populated residential areas and dry land agriculture on the west side of the estuary, due to the lack of implementation of preventive measures through hard coastal structure and coastal zoning policy to protect socio-economic activities and coastal ecological environments.
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Lima, M., and C. Coelho. "Integrated Methodology for Physical and Economic Assessment of Coastal Interventions Impacts." Journal of Modeling and Optimization 13, no. 1 (June 15, 2021): 22–43. http://dx.doi.org/10.32732/jmo.2021.13.1.22.
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Due to economic, environmental, and social interest of coastal areas, together with their erosion problems, different coastal management strategies can be considered, with different physical (shoreline evolution) and economic (net present value, ratio benefit-cost, break-even point) consequences and impacts. Therefore, this work presents an integrated methodology that aims to compare and discuss the most promising coastal intervention scenarios to mitigate erosion problems and climate change effects, considering costs and benefits related to each intervention. The proposed methodology takes a step forward in assessing the coastal erosion mitigation strategies, incorporating three well-defined and sequential stages: shoreline evolution in a medium-term perspective; structures pre-design; and a cost-benefit assessment. To show the relevance of the methodology, a hypothetic case study and several intervention scenarios were assessed. In order to mitigate costal erosion two different situations were analyzed: the reference scenario and the intervention scenarios. 34 intervention scenarios were proposed and evaluated to mitigate the erosion verified. Depending on the parameter considered (reduce erosion areas, protect the full extension of urban waterfronts, improve the economic performance of the intervention by increasing the net present value, the benefit-cost ratio or decreasing the break-even time), best results are obtained for different scenarios. The definition of the best option for coastal erosion mitigation is complex and depends on the main goal defined for the intervention. In conclusion, costs and benefits analysis are demanded and it is considered that the proposed methodology allows choosing better physical and economic options for future coastal interventions, helping decision-making processes related to coastal management.
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Kanwal, Shamsa, Xiaoli Ding, Muhammad Sajjad, and Sawaid Abbas. "Three Decades of Coastal Changes in Sindh, Pakistan (1989–2018): A Geospatial Assessment." Remote Sensing 12, no. 1 (December 18, 2019): 8. http://dx.doi.org/10.3390/rs12010008.
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Coastal erosion endangers millions living near-shore and puts coastal infrastructure at risk, particularly in low-lying deltaic coasts of developing nations. This study focuses on morphological changes along the ~320-km-long Sindh coastline of Pakistan over past three decades. In this study, the Landsat images from 1989 to 2018 at an interval of 10 years are used to analyze the state of coastline erosion. For this purpose, well-known statistical approaches such as end point rate (EPR), least median of squares (LMS), and linear regression rate (LRR) are used to calculate the rates of coastline change. We analyze the erosion trend along with the underlying controlling variables of coastal change. Results show that most areas along the coastline have experienced noteworthy erosion during the study period. It is found that Karachi coastline experienced 2.43 ± 0.45 m/yr of erosion and 8.34 ± 0.45 m/yr of accretion, while erosion on the western and eastern sides of Indus River reached 12.5 ± 0.55 and 19.96 ± 0.65 m/yr on average, respectively. Coastal erosion is widespread along the entire coastline. However, the rate of erosion varies across the study area with a general trend of erosion increasing from west to east in the Indus Delta region (IDR), and the highest average erosion rate is 27.46 m/yr. The interdecadal change during 1989–1999, 1999–2009 and 2009–2018 periods depicted an increasing linear trend (R2 = 0.78) from Karachi to Indus River (IR) East zone. The spatial trend from west to east is positively correlated with mean sea level rise, which has increased from 1.1 to 1.9 mm/year, and negatively correlated with topographic slope, which is found to be decreasing eastward along the coastline. The findings necessitate appropriate actions and have important implications to better manage coastal areas in Pakistan in the wake of global climate change.
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Rangel-Buitrago, Nelson, William J. Neal, and Victor N. de Jonge. "Risk assessment as tool for coastal erosion management." Ocean & Coastal Management 186 (March 2020): 105099. http://dx.doi.org/10.1016/j.ocecoaman.2020.105099.
Full textDissertations / Theses on the topic "Coastal erosion Assessment"
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Fitton, James Michael. "A national coastal erosion risk assessment for Scotland." Thesis, University of Glasgow, 2015. http://theses.gla.ac.uk/7110/.
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The geography of Scotland, with a highly undulating hinterland, long and indented coastline, together with a large number of islands, means that much social and economic activity is largely located at the coast. The importance of the coast is further highlighted by the large number of ecosystem services derived from the coast. The threat posed by climate change, particularly current and future sea level rise, is of considerable concern and the associated coastal erosion and coastal flooding has the potential to have a substantial effect on the socioeconomic activity of the whole country. Currently, the knowledge base of coastal erosion is poor, which serves to hinder the current and future management of the coast. This research reported here aimed to establish four key aspects of coastal erosion within Scotland: the physical susceptibility of the coast to erosion; the assets exposed to coastal erosion; the vulnerability of communities to coastal erosion; and the coastal erosion risk to those communities. Coastal erosion susceptibility was modelled here within a GIS, using data for ground elevation, rockhead elevation, wave exposure and proximity to the open coast. Combining these data produced the Underlying Physical Susceptibility Model (UPSM), in the form of a 50 m2 raster of national coverage. The Coastal Erosion Susceptibility Model (CESM) was produced with the addition of sediment supply and coastal defence data, which then moderates the outputs of the UPSM. Asset data for dwellings, key assets, transport infrastructure, historic assets, and natural assets were used along with the UPSM and CESM to assess their degree of exposure to coastal erosion. A Coastal Erosion Vulnerability Model (CEVM) was produced using Experian Mosaic Scotland (a geodemographic classification which identifies 44 different social groups within Scotland) to classify populations based upon 11 vulnerability variables. Dwellings were assigned a CESM and CEVM score in order to establish their coastal erosion risk. This research demonstrated that the issue of coastal erosion will impact on a relatively low number of properties compared to those impacted by flooding (both coastal and fluvial) as many dwellings are already protected by coastal defences. There is therefore, a considerable future liability, and great pressure for coastal defences to be maintained and upgraded in their current form. The use of the CEVM is a novel inclusion within a coastal erosion assessment for Scotland. Use of the CEVM established that coastal erosion risk is not distributed equally amongst the Scottish coastal population and highlighted that risk can be reduced by either reducing exposure or reducing vulnerability. Thus far in Scotland, reducing exposure has been the primary management approach, which has a number of implications with regards social justice. This research identified the existing data gaps that should be addressed by future research in order to further improve coastal management in Scotland. Future research should focus on assessing historical coastal change rates on a national scale, improve modelling of national scale wave exposure, enhance the information held about current coastal defences and, determine the direct and indirect economic cost associated with the loss of different asset types. It is also necessary to clarify the social justice implications of using adaptation approaches to manage coastal erosion as well as establishing a method to communicate the susceptibility, exposure, vulnerability and risk aspects whilst minimising the potential negative impacts (e.g. property blight) of releasing such information.
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Browning, Trevor Nulton. "Assessing Vulnerability to Watershed Erosion and Coastal Deposition in the Tropics." The Ohio State University, 2020. http://rave.ohiolink.edu/etdc/view?acc_num=osu1586964925152273.
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Roca, Bosch Elisabet. "Bringing Public Perceptions in the Integrated Assessment of Coastal Systems. Case studies on beach tourism and coastal erosion in the Western Mediterranean." Doctoral thesis, Universitat Autònoma de Barcelona, 2008. http://hdl.handle.net/10803/4976.
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La tesis aplica el pensamiento sistémico y la Evaluación Integrada (IA) al campo de la gestión costera. En particular, se analiza la contribución que el estudio de las percepciones aporta a los procesos de evaluación ambiental de los sistemas costeros, para mejorar las deficiencias de los métodos más convencionales caracterizados por su unidimensionalidad y dependencia del conocimiento disciplinar. Se han realizado tres estudios de caso relativos a la calidad de las playas en ambientes turísticos y a la erosión costera. El primer caso se ha desarrollado en la zona de la Costa Brava, al Nordeste España. El caso afronta la necesidad de incorporar la perspectiva del usuario a los métodos de evaluación de la calidad de la Playa. Se realizaron 600 cuestionarios a los usuarios de las playas y un conjunto de entrevistas en profundidad a actores locales. Los resultados muestran que los estudios de percepción pueden ser instrumentos muy útiles para los gestores costeros, aportando información sobre el perfil del usuario, sus preferencias y sus valoraciones sobre la calidad de las playas. En estos contextos los sistemas costeros deberían ser gestionados adaptándose a las particularidades ambientales de cada playa y a la diversidad de sus usuarios, evitando prácticas de homogeneización.
El segundo caso trata el problema de la erosión costera. El estudio se localiza en Sitges (Cataluña, España) donde se analiza un conflicto social surgido a principios del 2000 como reacción a una propuesta de intervención para frenar la erosión existente. La investigación explora los elementos que dificultan dar respuestas integradas a la erosión costera a partir de un estudio de percepción basado en entrevistas en profundidad. La complejidad e incertidumbre ligadas a los propios procesos erosivos, las características de los marcos de evaluación existentes y el contexto institucional en el campo de la protección costera en España son algunos de las cuestiones analizadas. El estudio muestra como el conocimiento técnico no es suficiente para encontrar soluciones coherentes i sólidas con el contexto local y las necesidades sociales y constata la necesidad de incorporar enfoques más participativos.
Finalmente, el tercer caso se desarrolló en el Lido de Séte (Francia) y explora los beneficios de aplicar un Análisis Multicriterio Participativo (AMP) para evaluar estrategias de gestión de la erosión costera. Los resultados muestran que las alternativas más adaptativas como el retroceso controlado de la línea de costa y la recuperación de la dinámica natural son socialmente más aceptados, en el caso de estudio, que alternativas más rígidas basadas en enfoques ingenieriles. El enfoque utilizado contribuye a representar la multidimensionalidad de la costa, integra diferentes perspectivas, facilita el intercambio de conocimiento y permite el tratamiento de la incertidumbre.
La disertación concluye ofreciendo una propuesta metodológica para incorporar la dimensión social en la evaluación integrada de sistemas costeros.
The present dissertation applies complex system thinking and Integrated Assessment (IA) to the field of coastal management. It emphasises the social perspective and analyses the added value of integrating public perceptions into the processes of assessing coastal socio-ecological systems. It argues that the Integrated Assessment of coastal systems requires moving away from one-dimensional evaluation methods and to develop innovative assessment approaches capable to understand coasts in as highly complex, multidimensional dynamic systems and explicitly acknowledge their inherent degree of uncertainty.
Three case studies have been carried out regarding the assessment of beach quality and coastal erosion. The first one was developed in the area of "Costa Brava", North-East Spain, a tourist hotspot. The case study addressed the lack of bottom-up approaches to assess beach quality. The methods, which were applied on six beaches, involved a survey of 600 beach-users and a set of in-depth interviews to local stakeholders. The results showed that public perception surveys can be useful tools for coastal managers. Coastal systems should be specifically managed in an adaptive fashion considering the particularities of each beach and avoiding homogenising practices. In this way, conservation strategies could be prioritised in natural environments with recognised natural values or with higher potential for ecological recovery. While in the other hand, 'hard' interventionist approaches oriented to enhance recreational beach uses could be pursued in those intensively used beaches, normally located along urban water fronts.
The second case deals with coastal erosion. It was carried out in Sitges (Catalonia, Spain) and analyzed a conflict that arose at the beginning of the year 2000 as a reaction to a proposal for intervention to cope with coastal erosion. The research explored the elements that make it difficult to give integrated responses to coastal erosion. In this case, the research of public perception was based on in-depth interviews. Issues related to the very nature of the coastal systems - complexity and uncertainty of coastal erosion- were addressed. Furthermore, the work explored the drawbacks of the existing assessment approaches and the policy framework on coastal protection in Spain. The case study showed that the technical knowledge does not fit enough to find robust solutions that satisfy both social needs and technical requirements. The complexity of coastal erosion risks demands to move beyond the existing assessment frameworks where the role of the experts need to be reformulated. This process should open up the debate to other disciplines and knowledge which may bring more adaptive alternatives more in coherence with natural dynamics of coastal systems.
The third case was carried out in the Lido of Séte (France) and explored the suitability of applying participatory MultiCriteria Analysis (MCA) to assess different strategies to cope with coastal erosion risks. The methods used involved the Social Multicriteria Evaluation tool of Naiade combined with in-depths interviews and focus groups. Results showed that more adaptive alternatives such as "retreating the shoreline" were preferred by selected stakeholders to those corresponding to "protecting the shoreline" and the Business as Usual proposals traditionally put forward by experts and policy makers on these matters. Participative MCA contributed to represent coastal multidimensionality, elicit and integrate different views and preferences, facilitated knowledge exchange, and allowed highlighting existing uncertainties.
The dissertation concludes by drawing a methodological proposal on how to bring social perspective into the assessment of coastal systems. A 3-step procedure is put forward which includes the following: i) a baseline analysis of the values and perceptions of the society under study; ii) institutional analysis and maping out the stakeholders' relationships in order to identify barriers and opportunities to implementing integrated strategies and, iii) a public participation within the assessment process. We argue that all this in-depth knowledge on the functioning of the social system needs to be combined with an in-depth understanding of the dynamics of the ecological system under consideration.
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Hathaway, Paul Terence. "An assessment of sediment behaviour and properties on Gold Coast beaches, Queensland, Australia." Thesis, Queensland University of Technology, 1997. https://eprints.qut.edu.au/36013/1/36013_Hathaway_1997.pdf.
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The movement of sediment in the nearshore zone is of particular interest along
many densely populated sandy coastlines throughout the world. The city of the
Gold Coast in southeast Queensland, Australia, is such a location. With residential
and apartment buildings built close to the shoreline, it has a history of property
threatening erosive events which make knowledge of the transport of the sandy
sediment that lines its beaches a prime concern. Between 1880 and 1910, training
walls were constructed at the mouth of the Tweed River. They were extended in the
early 1960's. This construction has interrupted the supply of sediment to the Gold
Coast from its updrift (southern) border. The resultant reduction in sediment supply
has severely depleted the protective barrier formed by offshore shoals, increasing
the volume of sediment required from the nearshore reserves in times of high
energy wave conditions such as those experienced in storms and cyclones.
Analysis centered on a suite of samples collected in 1972, and later sieved by Gold
Coast City Council soils laboratory staff The samples were collected on five shore
normal lines, distributed along the Gold Coast shoreline. Seven boreholes were
sampled along each of these lines in water depths ranging from 6 - 30 m. Each
borehole was drilled to 4.5 m into the sea bed, samples being collected in 0.75 m
sections. This drilling program gave the 210 samples used in this thesis.
Several researchers have indicated a limiting water depth for the nearshore active
zone of about 12-15 m for sediment in this region. Results from this analysis
indicate that this depth is indeed important in the distribution of sediment in this
region. However it appears to be better described as a boundary between two
energy systems. The sediment distribution in the onshore and offshore directions
are determined at this boundary.
Findings show that at this boundary the sediment shows the following properties:
• Percent fines which is
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Jadidi, Mardkheh Amaneh. "Towards development of fuzzy spatial datacubes : fundamental concepts with example for multidimensional coastal erosion risk assessment and representation." Doctoral thesis, Université Laval, 2014. http://hdl.handle.net/20.500.11794/25589.
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Les systèmes actuels de base de données géodécisionnels (GeoBI) ne tiennent généralement pas compte de l'incertitude liée à l'imprécision et le flou des objets; ils supposent que les objets ont une sémantique, une géométrie et une temporalité bien définies et précises. Un exemple de cela est la représentation des zones à risque par des polygones avec des limites bien définies. Ces polygones sont créés en utilisant des agrégations d'un ensemble d'unités spatiales définies sur soit des intérêts des organismes responsables ou les divisions de recensement national. Malgré la variation spatio-temporelle des multiples critères impliqués dans l’analyse du risque, chaque polygone a une valeur unique de risque attribué de façon homogène sur l'étendue du territoire. En réalité, la valeur du risque change progressivement d'un polygone à l'autre. Le passage d'une zone à l'autre n'est donc pas bien représenté avec les modèles d’objets bien définis (crisp). Cette thèse propose des concepts fondamentaux pour le développement d'une approche combinant le paradigme GeoBI et le concept flou de considérer la présence de l’incertitude spatiale dans la représentation des zones à risque. En fin de compte, nous supposons cela devrait améliorer l’analyse du risque. Pour ce faire, un cadre conceptuel est développé pour créer un model conceptuel d’une base de donnée multidimensionnelle avec une application pour l’analyse du risque d’érosion côtier. Ensuite, une approche de la représentation des risques fondée sur la logique floue est développée pour traiter l'incertitude spatiale inhérente liée à l'imprécision et le flou des objets. Pour cela, les fonctions d'appartenance floues sont définies en basant sur l’indice de vulnérabilité qui est un composant important du risque. Au lieu de déterminer les limites bien définies entre les zones à risque, l'approche proposée permet une transition en douceur d'une zone à une autre. Les valeurs d'appartenance de plusieurs indicateurs sont ensuite agrégées basées sur la formule des risques et les règles SI-ALORS de la logique floue pour représenter les zones à risque. Ensuite, les éléments clés d'un cube de données spatiales floues sont formalisés en combinant la théorie des ensembles flous et le paradigme de GeoBI. En plus, certains opérateurs d'agrégation spatiale floue sont présentés. En résumé, la principale contribution de cette thèse se réfère de la combinaison de la théorie des ensembles flous et le paradigme de GeoBI. Cela permet l’extraction de connaissances plus compréhensibles et appropriées avec le raisonnement humain à partir de données spatiales et non-spatiales. Pour ce faire, un cadre conceptuel a été proposé sur la base de paradigme GéoBI afin de développer un cube de données spatiale floue dans le system de Spatial Online Analytical Processing (SOLAP) pour évaluer le risque de l'érosion côtière. Cela nécessite d'abord d'élaborer un cadre pour concevoir le modèle conceptuel basé sur les paramètres de risque, d'autre part, de mettre en œuvre l’objet spatial flou dans une base de données spatiales multidimensionnelle, puis l'agrégation des objets spatiaux flous pour envisager à la représentation multi-échelle des zones à risque. Pour valider l'approche proposée, elle est appliquée à la région Perce (Est du Québec, Canada) comme une étude de cas.Current Geospatial Business Intelligence (GeoBI) systems typically do not take into account the uncertainty related to vagueness and fuzziness of objects; they assume that the objects have well-defined and exact semantics, geometry, and temporality. Representation of fuzzy zones by polygons with well-defined boundaries is an example of such approximation. This thesis uses an application in Coastal Erosion Risk Analysis (CERA) to illustrate the problems. CERA polygons are created using aggregations of a set of spatial units defined by either the stakeholders’ interests or national census divisions. Despite spatiotemporal variation of the multiple criteria involved in estimating the extent of coastal erosion risk, each polygon typically has a unique value of risk attributed homogeneously across its spatial extent. In reality, risk value changes gradually within polygons and when going from one polygon to another. Therefore, the transition from one zone to another is not properly represented with crisp object models. The main objective of the present thesis is to develop a new approach combining GeoBI paradigm and fuzzy concept to consider the presence of the spatial uncertainty in the representation of risk zones. Ultimately, we assume this should improve coastal erosion risk assessment. To do so, a comprehensive GeoBI-based conceptual framework is developed with an application for Coastal Erosion Risk Assessment (CERA). Then, a fuzzy-based risk representation approach is developed to handle the inherent spatial uncertainty related to vagueness and fuzziness of objects. Fuzzy membership functions are defined by an expert-based vulnerability index. Instead of determining well-defined boundaries between risk zones, the proposed approach permits a smooth transition from one zone to another. The membership values of multiple indicators (e.g. slop and elevation of region under study, infrastructures, houses, hydrology network and so on) are then aggregated based on risk formula and Fuzzy IF-THEN rules to represent risk zones. Also, the key elements of a fuzzy spatial datacube are formally defined by combining fuzzy set theory and GeoBI paradigm. In this regard, some operators of fuzzy spatial aggregation are also formally defined. The main contribution of this study is combining fuzzy set theory and GeoBI. This makes spatial knowledge discovery more understandable with human reasoning and perception. Hence, an analytical conceptual framework was proposed based on GeoBI paradigm to develop a fuzzy spatial datacube within Spatial Online Analytical Processing (SOLAP) to assess coastal erosion risk. This necessitates developing a framework to design a conceptual model based on risk parameters, implementing fuzzy spatial objects in a spatial multi-dimensional database, and aggregating fuzzy spatial objects to deal with multi-scale representation of risk zones. To validate the proposed approach, it is applied to Perce region (Eastern Quebec, Canada) as a case study.
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Faasen, Petronella. "An Assessment of Accommodation Strategies for Coastal Adaptation in Cape Town, South Africa, in Response to Climate Change." Thesis, Stellenbosch : Stellenbosch University, 2014. http://hdl.handle.net/10019.1/86665.
Full textAbstract:
Thesis (MScEng)--Stellenbosch University, 2014.ENGLISH ABSTRACT: As the world finds itself increasingly unable to avoid the negative impacts of the physical phenomena associated with climate change, adaptation to climate change has been brought to the forefront of the international agenda. The range of adaptation technologies available can be categorized into three basic strategies (IPCC, 1990): Protection, (managed) Retreat, or Accommodation. The practice of adapting existing developments and infrastructure in the coastal zone by the process of accommodation has not yet seen wide implementation as a formalised adaptation strategy. In order for a community to accept and successfully implement accommodation strategies, all community stakeholders are required to accept and live with a certain level of managed risk, and to also rethink the concept of failure. As a result, accommodation practices implemented globally have been closely related to fields such as risk - and disaster management. Structural innovations in the field of accommodation measures include advanced technologies to elevate existing buildings safely above flood levels, and even “amphibious” houses. In Cape Town, South Africa, the choice between protection, retreat or accommodation as an adaptation measure remains complex. Not much discussion has yet been generated concerning accommodation measures that could be implemented to reduce the risk to existing properties that are already inappropriately located in the risk zone (e.g. seaward of the coastal hazard line), by accommodating the dynamic coastal processes taking place. Accommodation has been found to be most feasible in Cape Town at case study sites with a stable, non- or slowly eroding shoreline, which are also subject to flooding. The elevation of buildings and the alteration of buildings for flood-proofing, in unison with proactive risk and disaster management, could be implemented to accommodate the impacts of flooding on affected infrastructure. Located on Cape Town’s Atlantic Seaboard, Bakoven serves as a case study sample of such a site where an accommodation-based adaptation solution could be feasible. Both global and regional downscaled climate models have been found to deliver a large range of future climate conditions. Assuming best estimate future predictions, Bakoven properties have been found vulnerable to extreme flooding during both status quo and future extreme events. Environmental conditions at Bakoven are favourable for the construction of piled foundations. Stringent environmental and heritage constraints imposed by local government would, however, render accommodation strategies unviable. It is recommended that government at all levels be willing to adopt a more flexible approach to governing coastal areas, to ensure that the regulations they impose remain as dynamic as the environments which they govern. The viability and possible benefits of accommodation measures, rather than protection or retreat approaches should be carefully considered on an individual case-by-case basis, in unison with the local community.
AFRIKAANSE OPSOMMING: Wêreldwyd is gemeenskappe besig om toenemend te ervaar dat hul nie die nadelige gevolge van klimaatsverandering kan vryspring nie. Juis daarom, is aanpassing tot klimaatsverandering noodsaaklik. Die verskeidenheid van beskikbare benaderinge tot klimaatsverandering aanpassing kan in drie hoof kategorieë ingedeel word, volgens die IPCC (1990): Beskerming, (stelselmatige) Retireer of Akkomodasie. Die aanpassing van bestaande infrastruktuur d.m.v. akkomodasie is nog nie wyd geïmplementeer as ‘n amptelike aanpassings strategie nie. Ten einde die sukses van ‘n akkommodasie strategie te verseker, sal gemeenskappe genoodsaak wees om ‘n sekere vlak van residuele risiko te aanvaar en die konsep van die ‘faling’ te herdefinieer. Akkommodasie oplossings wêreldwyd is daarom nouliks verwant aan risiko- en rampsbestuur. Innovasies in die struktuurindustrie om die risiko van klimaatsverandering te akkommodeer, sluit onder andere in die fisiese oplig van geboue na ‘n hoër, veilige vlak, en ook die bou van sogenaamde “amfibiese” huise. In Kaapstad is die bepaling van die mees gepaste en voordelige aanpassings oplossing, net soos in die res van die wêreld, kompleks. Die moontlikheid van die gebruik van akkommodasie benaderinge en tegnologieë, eerder as beskermingsstrategieë, is nog nie welbekend of algemeen geïmplementeer nie. Daar bestaan wel ‘n geleentheid om hierdie tegnologieë toe te pas in die geval van bestaande strukture wat seewaarts van die dinamiese kusproses lyn, geleë is. Hierdie studie het bevind dat akkommodasie oplossings moontlik suksesvol kan wees by spesifieke gevallestudies langs Kaapstad se kuslyn waar die kuslyn grootendeels stabiel is. Die oplig en verandering van geboue om vloedbestand te wees, tesame met proaktiewe risiko- en rampsbestuur maatreëls, word by sommige van hierdie gevallestudies aanbeveel om die impak van klimaatsverandering te akkomodeer. Bakoven, ‘n klein gemeenskapsbuurt op Kaapstad se kuslyn, is ‘n voorbeeld van ‘n geval waar ‘n akkommodasie oplossing moontlik goed kan werk. Globale klimaatsmodelle lewer ‘n wye reeks van toekomstige klimaatsvoorspellings vir die jaar 2063. Tydens die toets van die mees waarskynlike toekomstige klimaats-scenario, is bevind dat Bakoven kwesbaar is vir die verwagte vloeding a.g.v. seevlakstyging verwag teen 2063. Daar is ook bevind dat selfs tydens huidige storms, sommige strukture aan Bakoven se kus kwesbaar is. Die omgewingstoestande by Bakoven word beskou as voordelig vir die konstruksie van heipale as fondasies om die geboue hoër op te lig. As gevolg van streng munisipale regulasies met omgewings- en geskiedkundige bewaring as doel, is hierdie opsie egter nie moontlik nie. Dit word aanbeveel dat die regulasies wat deur regeringsamptenare daargestel word, aanpasbaar genoeg moet wees om die veranderende kusomgewing in ag te neem. Die moontlikheid en volhoubaarheid van ‘n akkommodasie oplossing, eerder as ‘n beskermings- of opgee benaderinge, moet deeglik ondersoek word vir elke ‘n individuele geval, in samewerking met die betrokke gemeenskap.
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Narra, Pedro Miguel Fragoso. "CERA: gis-based assessment of coastal erosion risk." Doctoral thesis, 2018. http://hdl.handle.net/10773/24812.
Full textAbstract:
Coastal areas are important in human development, providing numerous
economic and social benefits. On the other hand, these areas are affected by
several natural hazards. Therefore, the identification of endangered areas is
essential to a thoughtful coastal management and to mitigate potential
damages.
Through the years, several methodologies of coastal risk assessment have
been developed to support coastal managers in decision making. These
methodologies assess areas for various types of coastal hazards, for variable
extents and time scales, and return different final products often based on
different conceptions. This work intends to contribute for further progress of
coastal risk assessment methodologies with the development of CERA
(Coastal Erosion Risk Assessment). CERA is a methodology developed to
evaluate coastal erosion risk for a medium-term horizon (10 to 20 years). The
methodology should be applicable in a wide range of coastal environments and
scales, with considerable accuracy and efficiency. This method mainly targets
governmental institutions from countries and regions where there is a lack of
data and results of coastal management.
For the development of CERA, an extensive literature review of existent coastal
risk methodologies was performed. This task allowed to gain knowledge on
how to apply the methodologies and to identify most common indicators, and
adopted spatial scales and time frames. From the analysed methods, five were
applied to the selected study sites within this work: Aveiro (Portugal), Macaneta
spit (Mozambique) and Quintana Roo (Mexico).
The applied methods (CERA1.0; CVI; Smartline; RISC-KIT CRAF1; and CHW)
varied in terms of specific objective within coastal risk assessment, indicators
considered, procedure and outputs. Consequently, the results of various
methodologies disagree on the hazard level attributed for the study areas.
However, they generally agree in the identification of most endangered
locations of each study area. The application of these methods provided
specific takeaways to be followed in the development of the new proposal.
The new methodology (CERA2.0) follows closely the Source-Parthway-
Receptor-Consequence model by evaluating risk propagation in four modules:
susceptibility, value; exposure; and coastal erosion. Subsequently, these are
combined to generate vulnerability, consequence and risk results. A total of 12
indicators are included. For easier application of the methodology, a QGIS
plugin was developed. Given the required inputs, the plugin computes all
CERA2.0 procedures and provides the results in a georeferenced format. The
new procedure was also applied to the three case studies, obtaining a more
realistic set of results.As zonas costeiras são locais de grande importância para o desenvolvimento humano, proporcionando inúmeros benefícios económicos e sociais. Por outro lado, estas zonas estão sujeitas a vários perigos naturais. Portanto, a identificação de zonas de perigo é essencial para uma gestão costeira apropriada e consequente mitigação de potenciais danos. Ao longo dos anos, várias metodologias de risco costeiro foram desenvolvidas com o intuito de apoiar gestores das zonas costeiras no processo de decisão. Estas metodologias variam no tipo de perigo em análise, no conceito e produto final determinado, na extensão de linha de costa a que podem ser aplicadas e na escala temporal em análise. Este trabalho procura contribuir para o progresso das metodologias de risco costeiro com o desenvolvimento do CERA (Coastal Erosion Risk Assessment). O CERA foi desenvolvido com o intuito de analisar o risco à erosão costeira a médio prazo (10 a 20 anos). A metodologia deve ser aplicável a uma grande variedade de ambientes costeiros e escalas, com uma considerável assertividade e eficiência. O principal público alvo para a utilização do método são instituições governamentais de países ou regiões onde exista fraca informação e resultados de gestão costeira. Para a conceção do CERA, foi feita uma extensa revisão de literatura, identificando metodologias de risco costeiro existentes. Esta tarefa proporcionou um melhor conhecimento relativo à aplicação das metodologias, identificação de indicadores mais comuns, bem como as escalas temporais e espaciais mais usadas. Das metodologias identificadas e estudadas, cinco foram aplicadas aos locais de estudo definidos para este trabalho: Aveiro (Portugal), Macaneta (Moçambique) e Quintana Roo (México). Os métodos aplicados (CERA1.0; CVI; Smartline; RISC-KIT CRAF1; e CHW) variam em termos de objetivo específico dentro da temática de risco costeiro, indicadores considerados, procedimentos e resultados. Consequentemente, os resultados dos vários métodos não são concordantes no nível de perigo atribuído a cada local. No entanto, os locais de maior perigo dentro de cada área de estudo são similares. A aplicação destes métodos permitiu o desenvolvimento de uma série de diretrizes a serem seguidas durante o desenvolvimento da nova proposta. A nova metodologia (CERA2.0) segue o modelo conceptual Source-Parthway- Receptor-Consequence, avaliando a propagação de risco em quatro módulos: suscetibilidade, valor, exposição e erosão costeira. Posteriormente, estes módulos são combinados de forma a obter resultados de vulnerabilidade, consequência e risco. A utilização do CERA2.0 requer um total de 12 indicadores. Para uma fácil aplicação da metodologia, foi desenvolvido um plugin no programa QGIS. Introduzindo os dados necessários, o plugin executa todos os processos previstos no CERA2.0 e providencia os resultados georreferenciados. O novo método foi igualmente aplicado aos casos de estudo, obtendo-se um conjunto de resultados mais realistas.
Programa Doutoral em Engenharia Civil
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Bianco, Francesco. "Coastal Resilience Potential as a Coefficient of the Coastal Erosion Risk Assessment, and the Management of Risk Areas via Nature-Based Solutions." Doctoral thesis, 2021. http://hdl.handle.net/2158/1235255.
Full textAbstract:
Climate change has now become a global problem since the level of awareness of civil society has grown. Even non-professionals have understood that this phenomenon is strongly influenced by human activities and by local or specific dynamics, which exacerbate its effects, especially in the case of coastal environment conservation.
Coastal erosion is a natural process that is exacerbated by climate change and is considered a natural hazard since it threatens the safety of humans and their properties. As with other natural hazards, such as fire and hydraulic, the risk of coastal erosion is mainly driven by urban spreading and inadequate land management.
There are numerous proposals in the scientific literature based on good practices, guidelines and studies on the assessment and management of coastal erosion to solve the problem. However, coasts around the world are still experiencing significant imbalances, and future forecasts on this issue are even more pessimistic. On a technical level, numerous solutions have been tested in recent decades. Unfortunately, these alternatives have been fundamentally oriented towards the construction of hard coastal engineering structures, which instead of solving the problem, on many occasions have created new phenomena of instability such as the generation of coastal narrowing and the translation of erosive phenomena along the coast.
Solutions were proposed and tested considerably, during the last century; almost everywhere they comprised hard structures of coastal engineering that instead of solving the problem, created new instabilities, such as coastal squeezing and erosive shifting.
These consequences, and the trends observable on the world's shores, have required the conversion of coastal engineering into a more sustainable discipline that strongly supports natural resilience. More generally, resilience represents the ability of natural systems, such as a coast, a community or an individual, to cope and respond to a traumatic event by drawing on their own resources. As for the loss of the beaches, this intrinsic character must allow the system to use the sedimentary stock, to rebalance the dynamics and feedbacks coming from each of its physical and biological components. This would allow the beach to "jump back" and reach the morpho-dynamic equilibrium it had in the phase preceding the erosive trauma.
This work proposes an integrated method for calculating the resilience potential that can address both the assessment and management phases of coastal erosion risk. The proposed evaluation methodology comprises the use of innovative technologies, such as geographic information systems (GIS) for the mapping and spatial analysis of morphological trends, integrated in the analysis of economic and social dynamics. Such matrices differ greatly due to their different nature but must be considered as the product of vulnerability and exposure in risk assessment. Adopting an approach oriented to the use of multi-parametric indices, the resilience potential was calculated and integrated into the vulnerability assessment. This is essential as from a regulatory point of view areas exposed to natural hazards must be transformed into low risk levels to improve their natural stability before their use. In this regard, the coastal strip of the Municipality of San Vincenzo (Livorno, Italy) has been mapped and its potential use and regulation have been evaluated independently of purely economic or political approaches.
However, this still represents a great challenge as the economy plays a strong role in valuation formulas, as well as management plans, which for these reasons are rarely decisive.
The study was tested within the Interreg MAREGOT Project, of which the Department of Earth Sciences of the University of Florence is a partner. Initially a morphodynamic evaluation of the studied site was carried out, followed by the drafting of a morpho-sedimentological map. These activities were carried out at the Laboratory of Applied Geomorphology of the Center for Geotechnology (CGT) of the University of Siena. Subsequently, the morphological trends and the economic parameters examined were converted into diagnostic indicators of territorial change, at the Department of Civil Engineering of the Polytechnic University of Cartagena (Spain).
The results highlight that an assessment of the resilience potential is not only necessary to address the effects of climate change, but it is mandatory to plan corrective actions that quantify the real capacity of coastal areas to cope with extreme events. Furthermore, in anthropized coastal environments the high density of concessions for recreational activities, the high price ranges of services, and the construction of buildings on the coastal area imply significant limitations that can be related to both social and morphological risks. The most important ones concern free access, the exercise of the right to swim, as well as the provision of a right of possession of the built works to the concessionaires, and subsequently the duty to protect them (by the administrations) through rigid works in emergency conditions. climatic. As already mentioned, these works are generally to be considered as the last alternative, as they can give rise to phenomena of contraction of the coastal strip at a local level, and sometimes cause the loss of some habitats.
The European Commission's EU market regulation rules have sometimes highlighted the existence of shortcomings in the management of state-owned concessions in the maritime field. Indeed, in Italy they are generally automatically renewed to concessionaires for indefinite periods, without considering its implications on sedimentary dynamics of the coast. As already mentioned, this has influenced coastal engineering and urban planning on the territory of the entire Italian state.
Hence, the Nature Based Solution tested in this study consists of a method that includes the potential for resilience in the management of areas subject to coastal erosion. This phenomenon is analyzed in terms of socio-morphological vulnerability on a local scale (beach), since it represents the administrative dimension within which this procedure is most applicable, and in which the concept of risk is linked to the loss of sedimentary stock. The approach adopted is oriented to the use of multi-parametric spatial indices through GIS tools, and shows the applicability of the method that allows to identify areas with different potential for relative resilience. Furthermore, it allows to generate territorial management strategies on a local scale consistent with the existence of morphological and social vulnerabilities.
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Ye, Chun-Jhen, and 葉純甄. "The Risk Assessment on Coastal Erosion in Taiwan： A Case Study of Yunlin and Taitung Coast." Thesis, 2018. http://ndltd.ncl.edu.tw/handle/238b5t.
Full textAbstract:
碩士國立臺灣海洋大學
河海工程學系
106
Taiwan, an island locating in the western Pacific Ocean, puts lots of effort into saving coastal land resources. If coastal erosion continues to occur, not only does the land loss but also cause damage to existing coastal protection structures. Without the existence of buffer zone, the wave will impact on protection structures directly. In the meanwhile, if an invasion of typhoon happened, the dike may be broken down and follow with inundation by the storm surge. In order to protect national land resources and decrease the damage from disasters, this study purposed the compound risk classification and the risk map for Yunlin and Taitung coastal area that are under different erosion potential for the risk assessment. First of all, shoreline change analysis and the volumetric analysis were used to define erosion sectors, and then connected the erosion sectors to administrative units. Therefore, three villages in Yunlin, seven villages in Taitung are subject to coastal erosion. Afterward, this study calculated storm surge by Digital Elevation Model and 50-year return period tidal level to show the villages that may encounter storm surge due to coastal erosion in nearly five years. Eventually, these analysis results would be the elements of risk assessment. The risk assessment which is based on factors of hazard and vulnerability, hazard represents as natural or man-made disasters, vulnerability is the phase about humanity, economy and resilience, the weight between them was collected by questionnaire. Ultimately, hazard index and vulnerability index were brought into risk matrix to calculate the risk level, then drew the risk map by Geographic Information System (GIS). The risk maps shows Wugang Village, Lunbei Village and Gangxi Village in Yunlin, Fugang Village, Jianguo Village, etc, seven villages in Taitung are exposed to relatively high potential risk.
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BARILLA', GIUSEPPINA CHIARA. "Nuova metodologia di valutazione del rischio da erosione costiera. Caso studio: Regione Calabria." Doctoral thesis, 2022. http://hdl.handle.net/11570/3225396.
Full textAbstract:
The coastal environment represents a dynamic ecosystem, whose evolution is continually conditioned by the action of numerous climatic and anthropic factors, which affect both the coasts and the hydrographic basins. In recent decades, the growing anthropization of coastal areas and the effects of climate change, in terms of both sea level rise and the increase in frequency and intensity of extreme weather events, have caused severe surface losses in the emerged coast. As a result, awareness of the need for better coastal zone management has increased in recent years and there has been a widespread and growing interest in coastal risk assessment methodologies. However, the national and international panorama, in terms of coastal risk assessment, is characterized not only by the presence of different calculation methodologies depending on the coastal region in question, but above all by a great variety and dispersion of factors on which these methodologiesare based. At present, in fact, there is no methodology that is of general validity, which can incorporate all the factors that influence coastal risk, in which the characteristic parameters of the area are calibrated according to a standardized procedure, such as the one proposed in this thesis.
The new risk assessment methodology, proposed in this study, is index-based and is of general validity, and allows to take into account all the hazard and vulnerability factors that come into play in the coastal erosion process. Also, this methodology can be integrated on a free access GIS platform, in order to provide administrations, individuals and stakeholders with valid support both in the planning phase of coastal works and in the management phase of the coastal areas. The developed methodology was calibrated through its application in 54 sample locations in the Calabria region.
Books on the topic "Coastal erosion Assessment"
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Ibe, A. Chidi. Methodology for assessment and control of coastal erosion in West and Central Africa. Nairobi, Kenya: UNEP, 1989.
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Kraus, Nicholas C. Coastal processes assessment for Brevard County, Florida, with special reference to test plaintiffs. Vicksburg, Miss: U.S. Army Engineer Waterways Experiment Station, 1999.
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Kraus, Nicholas C. Coastal processes assessment for Brevard County, Florida, with special reference to test plaintiffs. Vicksburg, Miss: U.S. Army Engineer Waterways Experiment Station, 1999.
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Service, British Columbia Forest, and BC Environment, eds. Coastal watershed assessment procedure guidebook (CWAP): Level 1 analysis. [Victoria, B.C.]: Forest Service, British Columbia, 1995.
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Shigetani, Marilyn. Federated States of Micronesia preliminary damage assessment report: March 20-April 2, 2008 : high tidal surge, coastal erosion and drought. Micronesia: s.n., 2008.
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Lowe, Christopher. Coastal erosion and the archaeological assessment of an eroding shoreline at St Boniface Church, Papa Westray, Orkney. Phoenix Mill, Thrupp, Stroud, Gloucestershire: Sutton Publishing, 1998.
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Programme, United Nations Environment, ed. After the tsunami: Rapid environmental assessment. [Nairobi]: United Nations Environment Programme, 2005.
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Fletcher, Charles H. National assessment of shoreline change: Historical shoreline change in the Hawaiian Islands. Reston, Va: U.S. Dept. of the Interior, U.S. Geological Survey, 2012.
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Edge, Billy L., and Lesley Ewing. Hurricane Ike field investigations: A report of field operations from October 3-6, 2008. Reston, Virginia: The American Society of Civil Engineers, 2013.
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Programme, United Nations Environment. After the Tsunami: Rapid Environmental Assessment. United Nations Environment Programme, 2005.
Find full textBook chapters on the topic "Coastal erosion Assessment"
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Bonetti, Jarbas, Antonio Henrique da Fontoura Klein, Mariela Muler, Clarissa Brelinger De Luca, Guilherme Vieira da Silva, Elírio E. Toldo, and Mauricio González. "Spatial and Numerical Methodologies on Coastal Erosion and Flooding Risk Assessment." In Coastal Hazards, 423–42. Dordrecht: Springer Netherlands, 2012. http://dx.doi.org/10.1007/978-94-007-5234-4_16.
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Kim, Young-Min, and Hyun-Doug Yoon. "Assessment of Coastal Erosion Using Reliability Design Method." In APAC 2019, 557–64. Singapore: Springer Singapore, 2019. http://dx.doi.org/10.1007/978-981-15-0291-0_77.
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Bellezza Quater, P., F. Grimaccia, and A. Masini. "Airborne Unmanned Monitoring System for Coastal Erosion Assessment." In Engineering Geology for Society and Territory – Volume 4, 115–20. Cham: Springer International Publishing, 2014. http://dx.doi.org/10.1007/978-3-319-08660-6_22.
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Ghosh, Snigdhadip, and Vijay Kumar Dwivedi. "Assessment of Plan Form Development Due to Erosion and Deposition of Soil." In River and Coastal Engineering, 71–79. Cham: Springer International Publishing, 2022. http://dx.doi.org/10.1007/978-3-031-05057-2_7.
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Mahamoud, Avouca, Nadjim Ahmed Mohamed, Gzam Maher, and Mabrouk Montacer. "Risk Assessment of Coastal Erosion Hazard of Ngazidja Island in Comoros Archipelago." In New Prospects in Environmental Geosciences and Hydrogeosciences, 277–80. Cham: Springer International Publishing, 2022. http://dx.doi.org/10.1007/978-3-030-72543-3_62.
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Boussetta, Amina, Simona Niculescu, Soumia Bengoufa, Hajer Mejri, and Mohamed Faouzi Zagrarni. "Assessment of Coastal Vulnerability to Erosion Risk Using Geospatial and Remote Sensing Methods (Case of Jerba Island, Tunisia)." In European Spatial Data for Coastal and Marine Remote Sensing, 113–32. Cham: Springer International Publishing, 2022. http://dx.doi.org/10.1007/978-3-031-16213-8_7.
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Li, Xing, Yunxuan Zhou, Fang Shen, Runyuan Kuang, Wen Wu, and Zongsheng Zheng. "A Decision Support Framework for the Risk Assessment of Coastal Erosion in the Yangtze Delta." In Lecture Notes in Geoinformation and Cartography, 213–26. Berlin, Heidelberg: Springer Berlin Heidelberg, 2012. http://dx.doi.org/10.1007/978-3-642-25926-5_16.
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Punniyarajah, Kirishanthan. "An Assessment on Effects of Coastal Erosion on Coastal Environment: A Case Study in Coastal Belt Between Kalu River Mouth and Bolgoda River Mouth, Sri Lanka." In Climate, Environment and Disaster in Developing Countries, 375–90. Singapore: Springer Singapore, 2022. http://dx.doi.org/10.1007/978-981-16-6966-8_20.
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Gomes da Silva, Paula, Anne-Laure Beck, Jara Martinez Sanchez, Raúl Medina Santanmaria, Martin Jones, and Amine Taji. "Advances on coastal erosion assessment from satellite earth observations: exploring the use of Sentinel products along with very high resolution sensors." In Proceedings e report, 412–21. Florence: Firenze University Press, 2020. http://dx.doi.org/10.36253/978-88-5518-147-1.41.
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This work proposes the use of automatic co-registered satellite images to obtain large, high frequency and highly accurate shorelines time series. High resolution images are used to co-register Landsat and Sentinel-2 images. 90% of the co-registered images presented vertical and horizontal shift lower than 3 m. Satellite derived shorelines presented errors lower than mission’s precision. A discussion is presented on the applicability of those shorelines through an application to Tordera Delta (Spain).
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Padmini, Y., Peddada Jagadeeswara Rao, and Ch Anusha. "Assessment of Coastal Erosion Along the Srikakulam District, Andhra Pradesh State Using Satellite Data of 1990–2000 and 2000–2016 Time Frames." In Springer Series in Geomechanics and Geoengineering, 561–68. Cham: Springer International Publishing, 2018. http://dx.doi.org/10.1007/978-3-319-77276-9_50.
Full textConference papers on the topic "Coastal erosion Assessment"
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Wen, Shiyong, Fengshou Zhang, Xiang Wang, Xinxin Wang, Fei Li, Fei Wang, Ning Gao, and Xuegong Xu. "Risk Assessment Method of Coastal Erosion Disasters." In 7th Annual Meeting of Risk Analysis Council of China Association for Disaster Prevention (RAC-2016). Paris, France: Atlantis Press, 2016. http://dx.doi.org/10.2991/rac-16.2016.6.
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Wen, Shiyong, Fengshou Zhang, Xiang Wang, Zizhu Wang, Fei Li, Fei Wang, Xinxin Wang, and Xuegong Xu. "Hazard degree assessment of coastal erosion at Tianlongsi adjacent sandy coast." In 2016 4th International Workshop on Earth Observation and Remote Sensing Applications (EORSA). IEEE, 2016. http://dx.doi.org/10.1109/eorsa.2016.7552843.
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Ma, Deming, Aiping Feng, Sangyun Wu, Ping Li, Feng Cai, Jianhui Liu, and Gang Lei. "Coastal erosion risk assessment of sandy coast based on GIS and RS." In 2011 19th International Conference on Geoinformatics. IEEE, 2011. http://dx.doi.org/10.1109/geoinformatics.2011.5980891.
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Dong, Ping, and Keith J. Riddell. "Probabilistic Risk Assessment of Beach Erosion at Pevensey Bay in England." In 25th International Conference on Coastal Engineering. New York, NY: American Society of Civil Engineers, 1997. http://dx.doi.org/10.1061/9780784402429.367.
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Gelmambet, Sunai. "COASTAL EROSION RISK ASSESSMENT OF THE ROMANIAN BLACK SEA COASTLINE." In 15th International Multidisciplinary Scientific GeoConference SGEM2015. Stef92 Technology, 2011. http://dx.doi.org/10.5593/sgem2015/b32/s15.081.
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Kwarteng, Andy Yaw. "Remote sensing assessment of coastal erosion in Al Batinah, Oman." In 2009 IEEE International Geoscience and Remote Sensing Symposium. IEEE, 2009. http://dx.doi.org/10.1109/igarss.2009.5417604.
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Barros Pereira, Tiago R., Helenice Vital, Naira F. Barbosa, and Andre G. Aquino da Silva. "Seafloor morphology and coastal erosion assessment using multibeam bathymetric analysis." In 2015 IEEE/OES Acoustics in Underwater Geosciences Symposium (RIO Acoustics). IEEE, 2015. http://dx.doi.org/10.1109/rioacoustics.2015.7473622.
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Huang, Wei-Po, Lien-Kwei Chien, and Cheng-Yu Ku. "Assessment on Morphological Changes due to Coastal Exploitations and Remedies for Coastal Defense." In ASME 2017 36th International Conference on Ocean, Offshore and Arctic Engineering. American Society of Mechanical Engineers, 2017. http://dx.doi.org/10.1115/omae2017-61206.
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This study evaluates the influence of coastal structures on coastal morphology near Hsin-Chu fishery harbor in the northwest of Taiwan. As a result, the downdrift side has undergone local erosion due to the longshore sediment was impounded at updrift breakwaters resulting the enhancement of coastal flood risks as well as deterioration of the biological environment. Process and trend analyses were used to assess the effects the coastal exploitation made on the coastal morphology. Environmentally-friendly remedial measure, beach nourishment is proposed. The sediment source supply and the location of beach nourishment were also suggested for achieving the goal of sustainable use in the area.
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Sumerling, Trevor, Paul Fish, George Towler, James Penfold, John Shevelan, and Richard Cummings. "An Assessment of the Radiological Impact of Coastal Erosion of the UK Low-Level Waste Repository." In ASME 2011 14th International Conference on Environmental Remediation and Radioactive Waste Management. ASMEDC, 2011. http://dx.doi.org/10.1115/icem2011-59137.
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The UK Low Level Waste Repository Ltd submitted an Environmental Safety Case for the disposal of low-level waste to our regulator, the Environment Agency, on the 1st of May 2011. This includes assessments of the long-term radiological safety of past and future disposals. A particular feature of the Low Level Waste Repository (LLWR) is that, because of its proximity to the coast, the site is vulnerable to coastal erosion. Our present understanding is that the site will be eroded on a timescale of a few hundred to a few thousand years, with consequent disruption of the repository, and dispersal of the wastes. We have undertaken a programme of scientific research and monitoring to characterise the evolution and function of the current coastal system that provides a basis for forecasting its future evolution. This has included modelling of contemporary hydrodynamics, geomorphological mapping, repeat LiDAR and aerial photographic surveys to detect patterns and rates of change, coastal inspections and reconstructions of post-glacial (i.e. last 15,000 years) sea levels and sediment budgets. Estimates of future sea-level rise have been derived from international sources and consideration given to the impact of such on the local coastline. Two alternative models of coastal recession have then been applied, one empirical and one physical-process based, taking account of the composition of Quaternary-age sediments between the coast and the site and uncertainties in future local sea level change. Comparison of the ranges of calculated times to site contact with sea-level rise indicate that the repository is most likely to be disrupted by undercutting of the engineered vaults and of the trenches. A novel and flexible radiological assessment model has been developed to analyse the impacts of the erosion of the repository and subsequent dispersal of wastes. The model represents the spatial layout of the site and distribution of radionuclides within the repository and is able to take account of a range of uncertainties. These include uncertainties related to the rate of erosion through the facility, amounts of co-erosion of geological and cap materials, alternative assumptions for residence of waste materials on the beach, alternative waste form associations, the wider dispersion of the eroded materials and marine sorption/desorption processes. Results indicate assessed annual doses and risks that are consistent with regulatory guidance levels.
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Richardson, David, Kevin Burgess, and Robert Deakin. "NATIONAL ASSESSMENT OF COASTAL FLOOD AND EROSION RISK IN ENGLAND AND WALES." In Proceedings of the 28th International Conference. World Scientific Publishing Company, 2003. http://dx.doi.org/10.1142/9789812791306_0293.
Full textReports on the topic "Coastal erosion Assessment"
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Buzard, R. M., M. M. Turner, K. Y. Miller, D. C. Antrobus, and J. R. Overbeck. Erosion Exposure Assessment of Infrastructure in Alaska Coastal Communities. Alaska Division of Geological & Geophysical Surveys, 2021. http://dx.doi.org/10.14509/30672.
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Forbes, D. L., R. A. Covill, R. D. Feindel, and M. J. Batterson. Preliminary assessment of coastal erosion between Port au Port and Stephenville, St. George's Bay, west Newfoundland. Natural Resources Canada/ESS/Scientific and Technical Publishing Services, 1995. http://dx.doi.org/10.4095/203644.
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Public investment profile for climate risk reduction in Barbados: a macroeconomic cost-benefit analysis for reducing the socio-economic risk of coastal erosion. Inter-American Development Bank, December 2021. http://dx.doi.org/10.18235/0003915.
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The “Study on Disaster Risk Management A macroeconomic cost-benefit analysis for reducing the socio-economic risk of coastal erosion”, a dynamic modelling approach was developed to quantify the macroeconomic costs and benefits of investment in disaster risk reduction. The goal of the developed tool was multifaceted, with emphasis on assessing mixes of disaster risk reduction and financial protection instruments, and with a focus on addressing shortfalls in current disaster risk modelling methods. This work serves as the final report of the project and presents the results of an application of the developed Dynamic Model of Multi-hazard Mitigation Co-benefits (DYNAMMICs) framework to the country case of Barbados, demonstrating the applicability of the approach through empirical assessment of DRR investment options to combat coastal hazards facing the island country.