Дисертації з теми "Flooding impacts"
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Booij, Martijn Jan. "Appropriate modelling of climate change impacts on river flooding." Enschede : University of Twente [Host], 2002. http://doc.utwente.nl/58717.
Повний текст джерелаBacon, Adam N. "Investigation on the Impacts of Vessel Flooding on Roll Motion." ScholarWorks@UNO, 2019. https://scholarworks.uno.edu/honors_theses/127.
Повний текст джерелаKeefe, Sandra A. "The perfect storm : changing national policies to reduce flooding impacts and costs." Monterey, California. Naval Postgraduate School, 2011. http://hdl.handle.net/10945/10627.
Повний текст джерелаFlooding matters. As the nation's most common natural hazard, flooding costs this nation economically, disrupts communities and commerce, and renders communities and extrapolated-the nation-less than fully postured for other homeland security threats. It will not get better. Demographics leading to more people living in flood-hazard areas and forecasted increases in precipitation are converging to create the perfect storm. This thesis examines two national policies that can influence the impact and costs of flooding: The National Flood Insurance Program and the Robert T. Stafford Disaster Act. Examination and research reveals that the NFIP has failed to achieve its goals of reducing flood losses and political, economic, and societal factors serve to make reforming the NFIP effectively less than likely. A policy options analysis examines how changes to the Stafford Act might influence a reduction in the impact and costs of flooding where the political, economic, and societal factors at play may lend to favorable implementation consideration. The policy options include changing enforcement and incentive provisions of the Stafford Act along with a proposal to begin a national dialogue on mitigation through the creation of a National Mitigation Collaborative Consortium
Islam, K. M. Nabiul. "The impacts of flooding and methods of assessment in urban areas of Bangladesh." Thesis, Middlesex University, 1997. http://eprints.mdx.ac.uk/9602/.
Повний текст джерелаSafarzynska, Karolina, Roy Brouwer, and Marjan Hofkes. "Evolutionary modelling of the macro-economic impacts of catastrophic flood events." Elsevier, 2013. http://dx.doi.org/10.1016/j.ecolecon.2013.01.016.
Повний текст джерелаDill, Taylor Elizabeth. "Flood Duration and Nitrogen Management Impacts on Corn Physiology and Morphology." The Ohio State University, 2019. http://rave.ohiolink.edu/etdc/view?acc_num=osu1555078577539725.
Повний текст джерелаRandle-Boggis, Richard James. "Establishing optimum DNA annotation methods to investigate the impacts of flooding on microbial communities and functions." Thesis, University of York, 2016. http://etheses.whiterose.ac.uk/15833/.
Повний текст джерелаRabb, Benjamin. "Integrated modelling of climate and land use change impacts on groundwater flooding risk in a Chalk catchment." Thesis, Cardiff University, 2010. http://orca.cf.ac.uk/54140/.
Повний текст джерелаGillard, Natalie J. "Wildfire in the West: An Initial Analysis of Wildfire Impacts on Hydrology and Riverbed Grain Size in Relation to Salmonid Habitat." DigitalCommons@USU, 2019. https://digitalcommons.usu.edu/etd/7672.
Повний текст джерелаHu, Xi. "A temporal and spatial analysis of China's infrastructure and economic vulnerability to climate change impacts." Thesis, University of Oxford, 2017. https://ora.ox.ac.uk/objects/uuid:72408c96-c0fc-4dbc-a93b-c29a6c25da0c.
Повний текст джерелаle, Brasseur Richard. "Transitional landscapes : examining landscape fragmentation within peri urban green spaces and its impacts upon human wellbeing." Thesis, University of Edinburgh, 2018. http://hdl.handle.net/1842/31257.
Повний текст джерелаSamwinga, Victor. "Homeowner satisfaction and service quality in the repair of UK flood-damaged domestic property." Thesis, University of Wolverhampton, 2009. http://hdl.handle.net/2436/49714.
Повний текст джерелаDan-Jumbo, Nimi Gibson. "Assessing the effects of urban development and climate change on flooding in the Greater Port-Harcourt watershed, Niger Delta, Nigeria." Thesis, University of Edinburgh, 2018. http://hdl.handle.net/1842/28960.
Повний текст джерелаLamond, Jessica Elizabeth. "The impact of flooding on the value of residential property in the UK." Thesis, University of Wolverhampton, 2008. http://hdl.handle.net/2436/31427.
Повний текст джерелаSajid, Osama. "Three Essays on the Impact of Flooding on Human Welfare in South Asia." The Ohio State University, 2021. http://rave.ohiolink.edu/etdc/view?acc_num=osu1619010192079971.
Повний текст джерелаMendoza, Tinoco David. "Development and application of flood footprint analytical model in assessing economic impact to flooding events." Thesis, University of East Anglia, 2017. https://ueaeprints.uea.ac.uk/67843/.
Повний текст джерелаLedbetter, Ralph James. "An assessment of uncertainties in the analysis of the impact of climate change on flooding." Thesis, University of Reading, 2012. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.646016.
Повний текст джерелаKhalil, Kamal. "Water surface profile modelling for Pinjarra flood diversion channel and economic evaluation." Thesis, Curtin University, 2007. http://hdl.handle.net/20.500.11937/2455.
Повний текст джерелаSousa, Aloysio Rodrigues de. "Analysis of Flooding from Hydro Attributes - Climatological and Environmental Basin in rio do Peixe - PB." Universidade Federal do CearÃ, 2013. http://www.teses.ufc.br/tde_busca/arquivo.php?codArquivo=13172.
Повний текст джерелаThe river basin of the Peixe, a sub basin of the Alto Piranhas, with a dimension of 3. 443 km2 which gathers 18 municipalities in its lower course, suffers the phenomenon of flooding during the rainy season, causing the flooding of the cities of SÃo JoÃo do Rio do Peixe, Sousa, and Aparecida. This research aims to understanding the phenomenon from the relationships of the physical framework and geomorphological studies of a basin shape and the indices that are related to the laws of fluvial geomorphology, as well as the interrelationships between the physical substrate and precipitation through the interactions between watershed and atmospheric systems at synoptic, regional and local scales. The use of GIS software for the collection, modeling and analysis of the data was essential for the objectives of this work. The modeling of the maps using the gvSIG software, Arc GIS, Hidroflow make it possible to achieve the objectives linked to Hydrology and Climatology. The results shows the indices Kc, Kf and Ic, of 1.77, 0.19 and 0.31 respectively which states that the basin is not prone for flooding showing that other variables that causes flooding are present there. The results of observations shows that the climatological atmospheric systems operating in the analyzed event for the year 2008, the ITCZ in conjunction with other systems on a regional scale, one Vortex Cyclonic Higher Level - VCAN or a Squall lines are responsible for the precipitation above climatology of the area. For the rainy pattern of the year (2008) the ITCZ was the main atmospheric system, followed by VCANS DOLs and that coupled with the negative dipole, an ENSO episode of La NiÃa totaling only from January to May a precipitation above annual climatology. The analysis made by referring to the vegetation NDVI - Normalized Vegetation Index shows that there was considerable reduction in the SÃo JoÃo do Rio do Peixe and other areas of the basin, however it should be considered that there was a recovery in other areas especially in the mountains, which allows one to state that flooding can be related to assaults of removal of vegetation in the area of SÃo JoÃo do Rio do Peixe especially with the removal of riparian vegetation. The occupation of urban land in the cities of SÃo JoÃo do Rio do Peixe and Sousa shows that floods are related to the occupation of the river channel and as well as interventions in the drainage of small dams, dams on the river bed near the city hinder the flow of a larger volume when the aforementioned events.
A bacia hidrogrÃfica do rio do Peixe, uma sub bacia do rio Alto Piranhas, com uma dimensÃo de 3. 443 Km2 que congrega 18 municÃpios, no seu baixo curso sofre o fenÃmeno das inundaÃÃes quando no perÃodo chuvoso, inundando parte das cidades de SÃo JoÃo do rio do Peixe, Sousa e Aparecida. Essa pesquisa busca o entendimento do fenÃmeno pelas relaÃÃes do arcabouÃo fÃsico com os estudos geomorfolÃgicos da forma da bacia e de Ãndices que estÃo relacionados Ãs leis da geomorfologia fluvial, como tambÃm com as inter-relaÃÃes existentes entre o substrato fÃsico e as precipitaÃÃes, atravÃs das interaÃÃes entre a bacia hidrogrÃfica e os sistemas atmosfÃricos em escalas sinÃtica, regional e local. A utilizaÃÃo de software de geoprocessamento para a coleta, modelizaÃÃo e anÃlises dos dados foi fundamental para os objetivos deste trabalho. A modelagem dos mapas com utilizaÃÃo dos softwares Gvsig, Arc Giz, Hidroflow possibilitou alcanÃar os objetivos vinculados a Hidrologia e Climatologia. Os resultados encontrados mostram Ãndices Kc, Kf e Ic, respectivamente 1,77; 0,19 e 0,31 que afirma ser a bacia nÃo propensa a inundaÃÃes, o que demonstra que outras variÃveis causadoras das inundaÃÃes estÃo aà presentes. Os resultados das observaÃÃes climatolÃgicas mostram que os sistemas atmosfÃricos atuantes no evento analisado para o ano de 2008, que a ZCIT conjugado com outros sistemas em escala regional, um VÃrtice CiclÃnico de NÃvel Superior - VCAN ou com uma Linha de Instabilidade sÃo responsÃveis pelas precipitaÃÃes acima da climatologia da Ãrea. Para o ano padrÃo chuvoso (2008) a ZCIT foi o principal sistema atmosfÃrico, seguido dos VCANS e DOLs, que acoplado ao Dipolo Negativo, um ENOS de episÃdio de La NiÃa totalizando apenas de janeiro a maio precipitaÃÃes acima da climatologia anual. As anÃlises referentes a vegetaÃÃo feito por NDVI - Ãndice de VegetaÃÃo Normalizada mostra que houve reduÃÃo considerÃvel no SÃo JoÃo do rio do Peixe e em outras Ãreas da bacia, entretanto hà de se considerar que houve recuperaÃÃo em outras Ãreas principalmente nas serras, o que permite afirmar que as inundaÃÃes podem se relacionar com agressÃes da retirada da vegetaÃÃo na Ãrea de SÃo JoÃo do rio do Peixe, notadamente com a retirada da mata ciliar. A ocupaÃÃo do solo urbano das cidades de SÃo JoÃo do rio do Peixe e Sousa demonstra que as inundaÃÃes estÃo relacionadas com a ocupaÃÃo da calha do rio e bem como com as intervenÃÃes na drenagem, por pequenas barragens, barramentos no leito do rio prÃximo a cidade, dificultam o escoamento de um volume maior quando dos eventos supracitados.
Bhattacharya, Namrata. "A model to investigate the impact of flooding on the vulnerability of value of commercial properties." Thesis, University of Wolverhampton, 2014. http://hdl.handle.net/2436/550205.
Повний текст джерелаKhalil, Kamal. "Water surface profile modelling for Pinjarra flood diversion channel and economic evaluation." Curtin University of Technology, Department of Civil Engineering, 2007. http://espace.library.curtin.edu.au:80/R/?func=dbin-jump-full&object_id=17589.
Повний текст джерелаCosta, Tarcísio Oliveira da. "EVENTOS DE PRECIPITAÇÃO EXTREMA ASSOCIADOS ÀS INUNDAÇÕES NA ÁREA URBANA DE BRAGANÇA/PA." Universidade Federal de Santa Maria, 2014. http://repositorio.ufsm.br/handle/1/9431.
Повний текст джерелаO estudo do clima urbano é de grande importância no que se refere à compreensão da relação homem-natureza e da interação entre o clima local e a cidade. Essa perspectiva motivou este estudo sobre o Clima Urbano de Bragança/PA, cidade que tem sofrido impactos urbanos oriundos das chuvas que provocam inundações e alagamentos que atingem diversas áreas da cidade, principalmente, ao longo do curso do Igarapé Cereja, que corta a malha urbana. As inundações são um dos graves problemas que afetam as cidades quando há ocorrência de eventos de precipitação extrema, gerando impactos que influenciam no cotidiano das populações. Nesse sentido, a escolha pelo estudo do canal do Impacto Meteórico, terceiro canal dentre os subsistemas do Sistema Clima Urbano (SCU), justifica-se pelo estudo das inundações e alagamentos que tem ocorrido em Bragança e pela necessidade de entendimento das condições climáticas que as originam. Nesse contexto, este trabalho teve como objetivo geral analisar o clima urbano e os eventos de precipitação extrema associados à ocorrência de inundações e alagamentos na área urbana de Bragança-PA. Com isso, analisou-se a ocorrência de inundações no Igarapé Cereja e alagamentos em Bragança no período de 2004-2013; analisou-se a variabilidade da precipitação na área urbana no período de janeiro à maio do ano de 2014; identificou-se os sistemas atmosféricos ligados aos eventos de precipitação extrema na área urbana de Bragança-PA; realizou-se o balanço de participação dos sistemas atmosféricos durante o inverno amazônico de 2014 e elaborou-se um mapa de áreas de risco climático em situações de extrema precipitação com vistas ao ordenamento territorial urbano do município. Para tanto, a pesquisa baseou-se na teoria do SCU elaborada por Monteiro (1976). No histórico de inundações (2004-2013) foram encontrados 32 eventos extremos, dos quais apenas 07 foram classificados como episódios de relevância para este estudo, devido aos registros de repercussão na área urbana. Os dados meteorológicos analisados foram coletados da Estação Meteorológica Convencional de Tracuateua (EMT) e Estação Meteorológica Automática de Bragança (EMB), pertencente ao INMET e por uma rede de 07 pluviômetros instalados na área urbana de Bragança/PA em 2014, que possibilitou elaboração de mapas da variabilidade da precipitação durante o inverno amazônico. Foram também elaborados gráficos de balanço de participação mensal dos sistemas atmosféricos, com auxílio de imagens do satélite GOES 13 disponibilizadas pelo INPE e Cartas Sinóticas diárias das 00h e 12h disponibilizadas pela Marinha do Brasil. Com os resultados, observou-se que a ZCIT tem maior participação na ocorrência de eventos extremos e impactos urbanos, além de observar-se que há uma grande variabilidade da precipitação na área de estudo, de até 161 mm entre o setor norte-nordeste (mais chuvoso) e o setor Sul-sudoeste (menos chuvoso). Por fim foi elaborado um mapa de riscos como instrumento para o ordenamento territorial urbano, considerando a variável climática local.
Abdon, Myrian de Moura. "Os impactos ambientais no meio físico: erosão e assoreamento na bacia hidrográfica do rio Taquari, MS, em decorrência da pecuária." Universidade de São Paulo, 2004. http://www.teses.usp.br/teses/disponiveis/18/18139/tde-09062016-091734/.
Повний текст джерелаThe increase of flooding in the low course areas of Taquari river in the Pantanal - Mato Grosso do Sul state, has been transforming the cattle raising activity to a low profit activity in the region, when that extensive areas of pasture started to be flooded throughout several months a year from the 1970s. Since these areas are located in the Pantanal region where cattle raising activity is carried on in natural pasture it is necessary to investigate suitable methodologies for evaluation of the ambiental impact, approaching direct, indirect and cummulative impact as well as the processes that change, in a harmful way the environment. The flooding in the floodplain in Taquari river is supposed to be related to the anthropic ocupation in the upland areas of the Taquari river watershed. This work aims to evaluate the environmental impact caused by the anthropic ocupation, the cattle raising activity in the basin and the erosion and silting process in the flood plain of the Taquari river low course. The steps for the area characterization, the analysis of the impact and proposals viewing to diminish the problem, projected in an EIA (Environmental Impact Study), were also considered here. Information on the physical, biologic and socio-economic environment, selected from pre existent data survey, carried on for the Taquari river watershed (BHRT) were used here. For most of the themes, this was a process of surveying and recovering information in the original scale of 1:250.000 from the PCBAP managed in the SPRING GIS model. Field work to complement the existent data to survey the environmental impact of anthropic activities were also carried on. Most of socio-economic data used here were based on the cattle raising activity and demographic census data from IBGE. The results show that the environmental impact caused by cattle raising in the upland interferes in the flooding system in the watershed flood plain, and this fact could only be identified from the integrated analysis of the whole Taquari river watershed. It was observed that the EIA methods are suitable to identify the direct impact caused by the cattle raising activity, but they are not suitable to identify the process and its cummulative effects along the Taquari river watershed. Moreover, it was observed that the approach of the Strategic Environmental Assessment (SEA) as a procedure for environmental analysis in the policies, plans and programs is suitable for the analysis in the BHRT when it is centralized in the effects of environment on the necessities and opportunities of development. However, only the recovering of ambiental damage, the control of the effects caused by impacts on the environment and a system of conscient management can lead to an improvement in the technic and administrative procedures for a really possible ambiental sustentability in the BHRT.
Komperod, Mari. "The impact of climate and flooding on tree ring growth of Fraxinus pennsylvanica in north-central Texas." Thesis, University of North Texas, 2009. https://digital.library.unt.edu/ark:/67531/metadc12144/.
Повний текст джерелаKomperod, Mari Acevedo Miguel Felipe. "The impact of climate and flooding on tree ring growth of Fraxinus pennsylvanica in north-central Texas." [Denton, Tex.] : University of North Texas, 2009. http://digital.library.unt.edu/ark:/67531/metadc12144.
Повний текст джерелаThomas, Nicholas Wayne. "Simulating the hydrologic impact of distributed flood mitigation practices, tile drainage, and terraces in an agricultural catchment." Diss., University of Iowa, 2015. https://ir.uiowa.edu/etd/2017.
Повний текст джерелаChristensen, Magali. "Impact of wettability on two-phase flow in oil/water/carbonate rock systems." Thesis, University of Aberdeen, 2018. http://digitool.abdn.ac.uk:80/webclient/DeliveryManager?pid=239075.
Повний текст джерелаSakai, Rafael de Oliveira. "Estudo do impacto de Debris Flows: caso da bacia do rio Santo Antônio em Caraguatatuba (Brasil)." Universidade de São Paulo, 2014. http://www.teses.usp.br/teses/disponiveis/3/3145/tde-29122014-115910/.
Повний текст джерелаThe study here proposed aims to define the real impacts of the debris flows phenomenona, caused by a very intense rainfall, based on the disaster occurred in March of 1967, in Caraguatatuba, Brazil. The risk regarding mainly human casualties and material losses associated to such events in the region is higher nowadays, due to the increasing population rates and the settling of large companies such as oil industry, with reduced defense measures and works. Considering these factors, the region needs more detailed studies that will enable more effective master plans, decision making guidelines, contingency plans, population distribution regulation and structures of mitigation and remediation. In order to achieve these results, it was defined a digital terrain model through analysis of topographic, geographic, hydrographic and soil occupation data. The simulation of a similar extreme event as of 1967\'s on this model will result in valuable information to define evacuation plans, zoning guidelines, demobilization criteria, master plans and structural defenses.
Costa, Antônio Henrique Araújo. "Simulação dos impactos da urbanização sobre as inundações urbanas na bacia hidrográfica do rio Cuiá (PB)." Universidade Federal da Paraíba, 2013. http://tede.biblioteca.ufpb.br:8080/handle/tede/5498.
Повний текст джерелаCoordenação de Aperfeiçoamento de Pessoal de Nível Superior - CAPES
The intense population growth of the last decades has shown the lack of urban planning of brazilian cities. The disordered urbanization process involves directly in increased impervious areas, changing natural conditions and interfering in hydrological cycle. The metropolitan area of the João Pessoa city, Paraíba, has suffered from urban expansion without urban planning and has seen various impacts, such as floods. In the region of the river Cuiá basin, located in southern coastline of Paraíba, in the municipality of João Pessoa, between the UTM coordinates 9.210.000N/302.000E e 9200.00N/292.000E, such events have been repeated in periods of heavier rainfall. In this sense, the application of hydrological models has been recommended for prediction of impacts on water resources and assists in the decision making of managers. Thus, this study aims to estimate the impacts of urbanization on flooding in the river Cuiá basin. For this, we used the hydrological models IPH II and HEC-RAS and considered three urbanization scenarios (current, trend and critic), defined based on certain percentages of soil sealing and urban occupation. The rainfall-runoff simulations were performed considering rainfall with return period of 10, 50 and 100 years allowed us to estimate the impacts on the flows generated, on peak times and on floodplains of the basin. With the simulation results, it was found that the lower frequency rainfall results in peak flow up to 80% higher than the highest frequency. Under the same conditions, peak times were reduced on average by 10% when compared to the critical and current scenarios. The flood simulations generated information that allowed create the flood maps. Considering the potencial of flood scenarios more critical and less frequent events, floodplains can be as much as 13% higher than in the current scenario.
O intenso crescimento populacional das ultimas décadas tem evidenciado a falta de planejamento urbano das cidades brasileiras. O processo de urbanização desordenado implica diretamente no aumento de áreas impermeáveis, modificando condições naturais do meio e interferindo no ciclo hidrológico. A região metropolitana da cidade de João Pessoa, Paraíba, tem sofrido com a expansão urbana sem planejamento e, por consequência, visualizado vários impactos, como as inundações e os alagamentos. Na bacia hidrográfica do rio Cuiá, localizada no sul do litoral paraibano, no município de João Pessoa, entre as coordenadas UTM 9.210.000N/302.000E e 9200.00N/292.000E, eventos desse tipo são constantemente verificados nos períodos de chuvas mais intensas. Nesses casos, a aplicação de modelos hidrológicos tem sido recomendada para previsão dos impactos sobre os recursos hídricos e auxiliar no processo de tomada de decisão por parte dos gestores. Nesse sentido, este estudo tem como objetivo estimar os impactos da urbanização sobre as inundações urbanas na bacia hidrográfica do rio Cuiá. Para isso, utilizou-se os modelos hidrológicos IPH II e HEC-RAS, considerando três cenários de urbanização (atual, tendencial e crítico), definidos com base em percentuais de impermeabilização do solo e de áreas de ocupação urbana. As simulações chuva-vazão foram realizadas considerando chuvas com tempos de retorno de 10, 50 e 100 anos e permitiram estimar os impactos sobre as vazões geradas, sobre os tempos de pico e sobre áreas inundáveis da bacia. Com os resultados das simulações, verificou-se que as vazões máximas foram até 80% maiores quando resultantes de chuvas de menor frequência, do que de maior frequência. Nessas mesmas condições, o tempo do pico foi reduzido, em média, em 10% quando comparados os cenários crítico e atual. As simulações das inundações geraram informações que permitiram confeccionar os mapas de inundações. Ao se considerar o potencial das inundações nos cenários mais críticos e para eventos menos frequentes, as áreas inundáveis podem chegar a ser até 13% maiores do que no cenário atual.
Rothenbücher, Judith. "The impact of mowing and flooding on the diversity of arthropods in floodplain grassland habitats of the Lower Oder Valley National Park, Germany." [S.l.] : [s.n.], 2005. http://deposit.ddb.de/cgi-bin/dokserv?idn=976252821.
Повний текст джерелаAndrade, Murilo Henrique de. "Impactos da produção do arroz inundado sob a qualidade da água do Rio Paraiba do Sul - Trecho Taubaté." Universidade de Taubaté, 2010. http://www.bdtd.unitau.br/tedesimplificado/tde_busca/arquivo.php?codArquivo=175.
Повний текст джерелаThe great urban, industrial and agricultural growth of the cities across Taubaté region influences water quality of Paraíba do Sul river. It is necessary to keep more rigid river water quality control, considering its importance in healthy quality life of the population, economic development and environmental sustainability. In this study, we analyzed physical and chemical attributes of rice cultivation water and Paraiba do Sul river water from Taubaté region. The analysis was made during the rice cultivation. The results showed that the practice of rice cultivation favored the increase pollution level of Paraíba do Sul river. The rice cultivation adduced fertilizer and organic matter into the river showing that the fertilization needs to be adjusted to production under flooding.
Nedvidek, Daniel C. "Evaluating the Effectiveness of Regulatory Stormwater Monitoring Protocols on Groundwater Quality in Urbanized Karst Regions." TopSCHOLAR®, 2014. http://digitalcommons.wku.edu/theses/1407.
Повний текст джерелаAlsarawi, Noura. "Design of Low Impact Development and Green Infrastructure at Flood Prone Areas in the City of Miami Beach, FLORIDA, USA." FIU Digital Commons, 2018. https://digitalcommons.fiu.edu/etd/3739.
Повний текст джерелаSouthon, Mercia Patricia. "Exploring the perceived flooding impacts on tourist accommodation establishments in the Limpopo province, South Africa." Thesis, 2017. https://hdl.handle.net/10539/25038.
Повний текст джерелаClimate and weather-related impacts have become widespread particularly affecting the tourism industry. Changes in the climate and weather lead to changes in tourist seasons, products and travel opportunities. Flooding has gained research attention over the past decade, since the destruction creates many challenges for tourism businesses. Floods are a growing global problem, increasing in terms of frequency of occurrence, property damages, business economic losses, and fatalities. South Africa has begun to experience many annual flood events both coastal and in-land, but the Limpopo Province has been declared as flood disaster area, since the increase in temperatures and precipitation. Interest now lies on how particular tourist destinations in the Limpopo Province can adapt to reduce flooding risks whilst increasing opportunities mainly for the economy. Debates around flooding costs, recovery processes, and adaptive capacities affirm to be more challenging for the tourism accommodation sector. The study aimed to explore the perceived flooding impacts on different types of tourist accommodation. Thus, to determine if floods hindered any tourist bookings, offerings, and tourist length of stay. The exploration verified the possible flood risks to vulnerable accommodation and no adequate adaptation plans. A purposeful sample of 145 tourist accommodation businesses located across three flood-prone regions of the Limpopo Province were selected to answer a semi-structured questionnaire to put across their flooding experiences from a management perspective. The semi-structured questionnaire was combined with telephone interviews and email responses. Coherent theme development within the theoretical framework was achieved through content analysis. Content analysis allowed for the critical discussion of deductive and inductive themes found in the results. Floods during peak-seasons threaten and affect tourist accommodation, leaving them behind in business. Those not affected benefit with increased tourist demand and new opportunities in the hospitality industry. Tourist accommodation businesses are exposed to flood risks and experience challenges to assess, recover and adapt from the direct and indirect impacts. Alongside the destruction of tourism in these regions, were concerns of the provision of flood mapping and flood management plans for tourism businesses. Wider flooding impacts on the environment and the surrounding local communities demonstrates a growing problem for the future. Key words: floods; tourist accommodation; flooding impacts; risks; opportunities; tourist demand; adaptation; flood recovery, flood mapping, flood management plans.
LG2018
Gangashe, Andani Theophenia. "Assessing the impacts of flooding on vegetation cover in the Shashe-Limpopo confluence area using earth observation data." Thesis, 2018. https://hdl.handle.net/10539/25636.
Повний текст джерелаThe extensive and frequent flood events in the Shashe-Limpopo confluence area provide an opportunity to investigate the impacts of such an extreme event in terms of vegetation cover. Extreme flooding events are expected to occur more frequently as a consequence of climate change. Understanding the impacts of flood events on vegetation dynamic would be very useful to develop a dynamic simulation model that can predict the woody species composition of water retention areas or restored floodplains on the basis of flooding characteristics and therefore proposed riverine forest and landscape planning and management. This study used Landsat 7 data to quantify the response of vegetation to flood events in the Shashe-Limpopo confluence area. Two flood events that occurred in 2000 and 2013 respectively were analysed to evaluate the patterns of vegetation response in the area of study. Different indices such as NDVI, NDWI and Modified NDWI (MNDWI) were tested in mapping vegetation patterns and the flood extent. The MNDWI was shown to be more effective in extracting water information than the NDWI. NDVI results and change detection statistical change showed efficiency in indicating vegetation response to floods. The results show that using MNDWI and a 0.2 threshold value, water delineation is possible. Vegetation shows that it flourishes after the floods however; there is some degree of change. The results derived from this can be able to help with landscape planning and management.
LG2018
Saha, Ujjwal. "Impacts of Climate Change on IDF Relationships for Design of Urban Stormwater Systems." Thesis, 2014. http://hdl.handle.net/2005/3037.
Повний текст джерелаPo-HanWu and 吳伯翰. "The impact of storm sewer on urban flooding." Thesis, 2011. http://ndltd.ncl.edu.tw/handle/31351243659490187394.
Повний текст джерела(9725532), Acquire Admin. "Phytoplankton ecology in the Fitzroy River at Rockhampton, Central Queensland, Australia." Thesis, 1999. https://figshare.com/articles/thesis/Phytoplankton_ecology_in_the_Fitzroy_River_at_Rockhampton_Central_Queensland_Australia/21397656.
Повний текст джерелаThe seasonal periodicity of hydrology, physical and chemical water quality parameters and phytoplanktonic assemblages was studied at two sites in a large tropical Australian riverine impoundment. This study, the first in the lower Fitzroy River at Rockhampton, occurred between August 1990 and November 1993. It covered extremes in riverine flow conditions including major flooding and drought.
The annual flow regime was characterized by major flows in the "wet" season (summer and autumn) and greatly reduced or no flow in the "dry" season of winter, spring and sometimes early summer. Consequently, the thermal regime at both of the study sites was divided into two phases. The first was a phase of water column heating in the late winter to early summer. Features of this heating phase were long term stratification with progressive epilimnetic deepening, high pH, regular occurrence of epilimnetic oxygen supersaturation and decreased or undetectable levels of oxidized nitrogen in the surface layer. Hypolimnetic anoxia was recorded late in this phase. The second, between substantial wet season inflows and late winter was characterized by nutrient rich inflows and water column cooling and mixing.
Distinct interannual differences occurred in the volume, source and timing of inflows and subsequent water chemistry. In 1991, conductivity, water clarity, filterable reactive phosphorus (FRP) and pH increased markedly following major flooding from northern tributaries, while oxidized nitrogen decreased. This was in marked contrast to the drier years of 1992 and 1993 where turbidity and oxidized nitrogen were higher during the initial post-flood period and conductivity and FRP were lower. Extremes of mostly abiogenic turbidity (range 1.6 to 159 NTU) were a feature of the light climate. Ratios of euphotic depth/mixing depth below 0.3 occurred in early 1992 and 1993.
Steep gradients in the physical and chemical environment were paralleled by variations in the phytoplankton. Algal biomass (as chlorophyll a) at Site 1, midstream opposite the water intake for the city of Rockhampton, ranged from 1.5 to 56.6 ug L-1. The vertical water column distribution of chlorophyll was variable with assemblages normally dominated by phytoflagellates and various species of cyanoprokaryotes. There was also higher relative abundance of chlorophyll a (reflecting increasing dominance of cyanoprokaryotes) in the latter half of the year and at the lower end of light availability. The specific vertical water column positioning with respect to light and temperature is shown for assemblages dominated by the genera Anabaena, Aphanizomenon and Cylindrospermopsis.
The most striking aspect of the phytoplankton was the long term dominance of cyanoprokaryotes and the species richness (particularly that of cyanoprokaryotes) when compared with the dearth of information to date on other tropical rivers. Seasonal successions were varied. Regularly occurring assemblages were cyanoprokaryotes (Oscillatoriales), euglenophytes or non-flagellated chlorophytes during flows followed by flagellated chlorophytes and then cyanoprokaryotes (Nostocales) during the dry season. Genera present indicated highly eutrophic conditions. Hierarchical agglomerative clustering of phytoplankton data and comparison with a principal components analysis of corresponding environmental data were used to demonstrate the linkage between steep environmental gradients and variation in the phytoplankton assemblage. The specific environmental conditions associated with the success of various species were also analysed and presented. Using the above information, a two-part model was proposed which predicts the most likely genera of phytoplankton with respect to multidimensional environmental gradients. This model covers a wide gamut of conditions varying from highly variable lotic to lentic environments.
As Cylindrospermopsis raciborskii was considered a most important species in relation to the quality of the water supply for Rockhampton, the physical, chemical and biotic conditions prior to and during a bloom of this species are described. A number of possible grazers of C. raciborskii were identified with a view to future biomanipulation. One of these, the large ciliate, Paramecium cf. caudatum was found to be an effective grazer of toxic straight C. raciborskii in the laboratory.
This study is unique in that it analyses the impact of episodic events (eg. major flooding) on the subsequent phytoplankton in the lower Fitzroy River. The model relating phytoplankton to multidimensional environmental gradients provides great information for use in management, particularly in relation to the prediction of toxic algal blooms.
Ehrenfried, Daniel Howard. "Impact of viscoelastic polymer flooding on residual oil saturation in sandstones." Thesis, 2013. http://hdl.handle.net/2152/23870.
Повний текст джерелаtext
Alabdulghani, Ahmad. "An Experimental and Numerical Study to Investigate the Impact of Capillarity on Fluid Flow in Heterogeneous Porous Media." Thesis, 2019. http://hdl.handle.net/10754/659220.
Повний текст джерелаYu-ShanLin and 林郁珊. "An Assessment of Low Impact Development Strategies for Flooding Resilience Urban Design." Thesis, 2016. http://ndltd.ncl.edu.tw/handle/n225q4.
Повний текст джерела國立成功大學
都市計劃學系
104
The frequency and the scale of flooding have been increasing due to climate change and urban expansion. To reduce runoff events, low-impact development (LID) is the green approach for reducing the area of impervious surface and managing storm water at the source with decentralized micro-scale control measures. However, the current LID assessment and practical applications in Taiwan are mainly at the community and household scales. As for urban design, the current applications ignore the diversity and complexity of the urban built environments, such as different densities, positive and negative spaces, volumes of building and so on. The assessment of current practice is more often assess the run-off mitigation of individual site, but seldom use basin as the scope of the assessment. It ignores the physiographic and hydrological factor; hence the application of LID cannot reflect flood mitigation effectiveness of the whole city. Looking toward to enable LID to strength the link with urban design to reduce the runoff in coping urban flooding, the research use physiographic inundation model to evaluate the flood mitigation effectiveness. Then, through correlation analysis, explore whether the improving flooding volume is related to its building environment and its location. Finally, simulate and analyze the influences of runoff route. The research shows that LID strategies will have different effect under different location and implementation objects. It is to say it will have better effect under specific condition. The assessment information can be the foundation to set the target of LID strategies and can helps to enact regulations of LID strategies in flooding resilience urban design more suitable for every different type of built environments, and can achieve the best benefit of flood mitigation effectiveness of the city.
Mosarwana, Ketlabareng Peaceful. "The impact of the Okavango River on the health of the community of Sepopa Village in the Okavango District, Botswana." Thesis, 2015. http://hdl.handle.net/10386/1344.
Повний текст джерелаIntroduction: A qualitative study was undertaken to assess the impact that flooding of the Okavango river have on the health of the community of Sepopa village. Aim: To assess the impact that flooding of the Okavango River has on the health of the community of Sepopa village. Study: the study was conducted in the village of Sepopa within the community aged between fifteen years and above. The village has an estimated population of 2824. Method: A non experimental descriptive research design using qualitative approach was used. Sampling: Two types of sampling procedure were used, being simple random sampling and purposive sampling. Results: The study revealed that 85% of the respondents reported or suffered from the injuries due to high waters brought about by floods, 92% reported to have fallen sick or having a member of their family who was sick with conditions related to floods. Of all the respondents, 54% explained they heard of deaths occurring in a river either due to drowning or crocodile and hippopotamus attacks. Lastly, 8% of respondents reported they never heard of any injuries, illness or death due to the impacts of floods. Conclusion: It can thus be concluded that the river has an impact to the health of the community either before, during and after a flood event, activities may be undertaken by the population at risk, by policy makers and by emergency responders to reduce health risks. Proper planning aimed to reduce the harmful effects of flooding by limiting the impact of a flood on human health and economic infrastructure should be adopted. Key words: health, sepopa village, impact, Okavango river.
Frey, Ashley E. "The Impact of Climate Change on Hurricane Flooding Inundation, Property Damages, and Population Affected." 2009. http://hdl.handle.net/1969.1/ETD-TAMU-2009-05-616.
Повний текст джерелаLI, YU-WEI, and 李昱緯. "The Impact of Flooding Potential on Housing Price: A Case Study of Tainan City." Thesis, 2019. http://ndltd.ncl.edu.tw/handle/93jtve.
Повний текст джерела南臺科技大學
企業管理系
107
Residential flooding will endanger the safety of homes, and will also cause loss of household property. The larger the flooded area near the home, the inconvenience may be caused to the convenience and health of the households. Therefore, the flooding trend of homes is for home buyers. Words are the decision-making factors of evasiveness and have an absolutely negative impact on the value of the house. In the past, research on flooding and housing prices mostly focused on the impact of housing flooding (in flooded areas) on housing prices, and rarely conducted empirical research on how housing flooding areas affect housing prices, and rarely targeted flooding. The possible frequency (flooding caused by the daily rainfall of several millimeters) is to explore the impact of this flooding trend on house prices. In this study, the possible frequency of flooding is divided into high frequency (200 mm daily rainfall) and low frequency (350 mm daily rainfall), according to the depth of flooding 30~50 mm, 50~100. Three types of flooding intensity, such as millimeters and 100 millimeters, are based on Tainan City. The QGIS geographic information system is used to analyze the real-time price of the real estate transaction of the Ministry of the Interior from October 1, 1998 to September 30, 105. Age, construction type, parking space, transfer floor, transfer floor square, number of rooms, number of halls, number of guards, main building materials, management organization and other variables are control variables, to explore whether the residential price and housing are in the flooded area, The relationship between the coverage area of flooded area within 500 meters of residential radius. The results show that the flooding caused by the two kinds of rainfall intensity is located in the 50-100 mm flooded area, which has a significant negative effect on house prices. The home is located in the flooded area of 30~50 mm or more. There is no significant relationship; under the flooding intensity of 30~100 mm, the coverage of flooded area within 500 meters of residential radius is significantly negatively correlated, that is, within 500 meters of residential radius under other conditions. The greater the coverage area of flooded water, the lower the residential price.
Chang, Chi-Ming, and 張志銘. "Flooding impact on the community structures of freshwater snails in the Wu-gou village, Pingtong." Thesis, 2007. http://ndltd.ncl.edu.tw/handle/20529233816556902550.
Повний текст джерела國立高雄師範大學
生物科技系
96
This research aims to investigate the species diversity of freshwater snails in Wu-gou village in Pingtung County, and the flooding impacts on its community structures, including the proportional abundance, the abundance of the dominant species. From March 2005 to February 2006, 7120 individuals of freshwater snails ,belonged to 9 , were collected. The duration of this survey is divided into four stages, including pre-disturbance, disturbance, post-disturbance Ⅰ, and post-disturbance Ⅱ. The results indicate that the species richness, abundance, and Shannon-Wiener Diversity Index decreased after the flooding disturbance. Although all these biological measurements recover gradually after flooding, the recovery of abundance is the most evident, which greater than the of pre-disturbance period. In most sites, proportional abundance of freshwater snail were varied from pre-disturbance after flooding. Despite their abundance dropped due to flooding, the collected individuals of dominant species recover to its pre-disturbance period within 1-3 months after flooding. Dynamic variation in abundance rank of most freshwater snails were recorded in most site during disturbance period; concordance species rank in abundance were shown in 6-9 month after flooding. Overall, flooding demonstrate a short-term but significant impact on the community structure of freshwater snails in Wu-gou village. Ranks of Proportional individuals, dominant species, and abundance all could varied during the flooding period and 6 months after disturbance. However, in 6-9months after flood, community structure of freshwater snails in Wu-gou village all similar to the pre-disturbance period.
Chen, Yu-chi, and 陳育麒. "The Environmental Impact of Flooding and the Development of Flood-related Rituals in Yilan, Taiwan." Thesis, 2014. http://ndltd.ncl.edu.tw/handle/23320841096689910208.
Повний текст джерела國立臺灣大學
歷史學研究所
102
Yilan, located at the northeast of Taiwan, is nestled right between the mountains and the sea. It is isolated, and its terrain goes from high in the west to low in the east. The Yilan Chuoshui River (now Lanyang River) that runs through the middle, along with the alluvial fan and delta that the river flows through forms the principle topography of the Yilan Plain. Yilan is prone to rain, regardless if it is from summer typhoons, or the rains brought by the northeast monsoons of winter. They all bring about large amounts of water to the region. Whenever the rainfall suddenly intensifies the Lanyang River has the potential to flood, leading to diversions of the downstream rivers and causing low-lying areas to nearly turn into a postdiluvian world. The earliest aborigines to inhabit the Yilan Plain were the Kavalans, who had an extremely strong affinity for water. Living scatted over the watery Yilan Plains, the fishing, hunting, sailing and trade that made up their livelihoods all arose from a direct dependency on the water. In the first year of the Emperor Jiaqing of the Ch’ing dynasty’s reign (1796), Han Chinese began to settle and cultivate land in the Yilan Plains. The agricultural lifestyle of Han Chinese settlers was completely different from that of the Kavalans, and with their superior agricultural skills, the Han Chinese gradually became the more powerful ethnic group of the plains. Han Chinese hamlets developed along the areas under cultivation; however, when torrential rain approached, floods broke out bringing a large amount of sand, completely burying entire areas. This caused great loss of life and property in many Han Chinese hamlets. This paper first analyzes and discusses the natural and cultural background behind the ease of Yilan to suffer from flooding, with emphasis placed on the relationship between the people and their geographical surroundings. The effects on Yilan brought by flooding were great, and records of flooding began from the Ch’ing dynasty. However, due to limitations in technological ability, there was quite a lack of Ch’ing era flooding prevention in Yilan. Through the modernization brought by the power of the colonial government during the Japanese colonial period, colonial authorities in Taiwan began to construct levees along the Yilan Chuoshui River. Since then, residents along the banks of the river have been able to reduce the hardship brought by floods. Yet, due to the topography and climate of the Yilan Plains, the levees are unable to completely eradicate flooding. As a result, residents along the banks of the river still harbor a fear of flooding. Among Yilan residents, they refer to the flooding invading their land as “tso-tu&;#257;-tsui” (“invading floods”). Moreover, the historical memory of “tso-tu&;#257;-tsui” exists forever within the hearts and minds of the residents, which we can discover from memoirs, literary works, and oral history. The second focal point of discussion in this paper looks at how the people of Yilan made use of rituals in their popular religion to respond to flooding. This paper takes the Shengou area on the north bank of the Lanyang River as an example, entering the discussion from Han Chinese water beliefs. By going into the Shengou area to conduct field research, and making use of oral interviews and recorded “pai-poh” (ceremonies involving praying on the levees), this paper aims to analyze the significance behind the belief in malicious spirits and flood rituals in local areas that suffer from floods. The people of Yilan live in an unstable environment brought about in no small measure by the hardships of flooding. The development and construction of this area is interdependent with the flooding situation of the area. This paper observes and studies flood related rituals, and we can see that the people of Yilan themselves are a part of nature. Through the earliest popular religion of making sacrificial offering to the gods, they attempted to dispel the menace and fear brought about by flooding to the area, while at the same time sought to reach a balance with nature.
(11267826), Neel Arun Salvi. "DELINEATING THE IMPACT OF STORMWATER INFRASTRUCTURE USING INTEGRATED FLOOD MODELING." Thesis, 2021.
Знайти повний текст джерелаWang, Keke. "Retrofitting green infrastructure for urban stormwater management: a proposal and recommendations for the Xiamen urban context." 2015. http://hdl.handle.net/1993/30761.
Повний текст джерелаOctober 2015
Lee, Cheng-Peng, and 李承芃. "Impact of Different Spatial Distribution of Rainfall Data and Clogging Factors on Flooding in Urban Area." Thesis, 2018. http://ndltd.ncl.edu.tw/handle/5396fk.
Повний текст джерела國立臺灣大學
生物環境系統工程學研究所
107
In recent years, due to climate change and extreme weather events, the rainfall intensity has increased. This phenomenon also has the same trend in summer typhoons, which increases the frequency of flooding disasters. At present, the flooding simulation usually sets up a single rainfall station for model simulation. Although this method is faster and simpler to construct, the single rainfall station may not be able to represent the rainfall situation of a whole area. In addition, the drainage method in the metropolitan area usually collects rainwater from the inlet and the side ditch. If the garbage and the fallen leaves accumulate due to heavy rainfall, the water inlet will not reach the designed water collecting effect, which may cause the metropolitan area the product of flooding. In this study, we investigated the effects of rainfall data from different spatial distributions on flooding simulations in urban areas, using rainfall observation data and radar echo data to simulate flooding. Comparison of single rainfall station, multi-rainfall station Thiessen''s Method rainfall setting, multi-rainfall station Thiessen''s Method Partition rainfall setting, Inverse Distance Weighted rainfall and radar echo rainfall. Through the methods of Accuracy (ACC), Probability of Detection (POD), Threat Score (TS), Precision or Predictive value (PPV), it is estimated that what kind of rainfall setting has better performance for flooding simulation in the urban area. Then set different clogging rates to compare the clogging rate values closer to the real city blockage, and compare the clogging rates with the Taipei city flooding map. In this study, Jieshang drainage and Hougang drainage basin in Shilin Distrinct, Taipei, is selected as the study area. Two short duration and one long duration rainfall events are used for simulation and analysis. Due to the closeness to real rainfall collection phenomena, the simulated results from Inverse Distance Weighted rainfall setting has a better agreement whether the duration of rainfall event is short or long. And set different clogging rate to get the clogging factor 20% as the closest to the real urban area clogging rate. It is also comparable to the flooding simulation map of Taipei City. The result of setting a 20% clogging rate can make the indicators have better performance.
Kobetis, Sarah Bridget. "Rising tide : stormwater management, historic preservation, and sustainable redevelopment in Houston’s Fifth Ward." Thesis, 2014. http://hdl.handle.net/2152/26619.
Повний текст джерелаtext