Bibliografías temáticas / Catchment

Literatura académica sobre el tema "Catchment"

Autor: Grafiati
Publicado: 4 de junio de 2021
Última modificación: 25 de mayo de 2024

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Artículos de revistas sobre el tema "Catchment"

1

Cisty, Milan, Barbora Povazanova y Milica Aleksic. "Evaluation of Catchments’ Similarity by Penalization in the Context of Engineering Tasks—A Case Study of Four Slovakian Catchments". Water 13, n.º 20 (15 de octubre de 2021): 2894. http://dx.doi.org/10.3390/w13202894.

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The present study deals with the similarity of catchments, which is a preliminary investigation before performing various water resource analyses and computations regarding other catchments, e.g., catchments’ similarity may be utilized in the context of analogous calculations of river flows in catchments without measured flows. In this paper, the penalization method of evaluating similarity is proposed; this method is appropriate for tasks in which fewer catchments are analyzed for engineering purposes. In addition to the various physical characteristics of the catchment, the “catchment’s calibrability” property is also formulated and evaluated. A methodology that used specific flows from catchments in a case study from Slovakia successfully verified the proposed penalization method. This verification confirmed that physical similarity, as evaluated using the proposed penalization methodology, also helps to identify hydrological similarity, i.e., finding the most similar catchment to a given catchment in terms of the rainfall-runoff process. Such a finding can be helpful, e.g., in the computation of the mentioned flows in ungauged catchments. Determining unmeasured flows can help to solve many engineering tasks, such as various technical calculations during the design of small reservoirs, defining the potential of a given stream for supplying irrigation, flood protection, etc.
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2

Kobus, Szymon. "Rainfall-Runoff Parameter Estimation from Ungauged Flat Afforested Catchments Using the NRCS-CN Method". Water 16, n.º 9 (26 de abril de 2024): 1247. http://dx.doi.org/10.3390/w16091247.

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Of the numerous methods applied in rainfall-runoff models, the most common is the NRCS-CN method that is applied to calculate raised-water runoffs and compare them with the runoff values measured for 12 selected rainfall-runoff events. This study was conducted on three experimental forest catchments with an area ranging from 67.6 to 747 ha. Total rainfall values ranging from 22.2 to 84.1 mm were analysed. Relatively low effective rainfall values were obtained for the lowest average for catchment 1 (Pe = 0.23 mm) and the runoff coefficient (α = 0.40%) and for the highest average for catchment 3 (Pe = 1.35 mm) and an average runoff coefficient (α = 3.12%). The maximum potential retention Si value, corresponding to each pair of P-Pe events, was the effect of the catchment’s moisture and absorptive capacity conditions. The lowest retention S value was calculated for catchment 3. The highest average retention value was calculated for catchment 1, in which the lightest soils were found. The best fit of the initial loss coefficient for the majority of rainfall-runoff events occurred for the λ coefficient values of 0.05 and 0.075. At higher λ, the effective rainfall Pe was not generated. LAG times calculated using 10 methods yielded diverse values. The fit of a specific formula was largely influenced by the size of the catchment, as well as the number and type of parameters considered during model calibration. The method based on catchment width demonstrated the best fit for all catchments, with R² ranging from 0.77 to 0.78 and RMSE from 0.52 for catchment 2 to 1.11 for catchment 1.
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3

Hasan, Ozren, Slobodan Miko, Saša Mesić y Zoran Peh. "Chemical Weathering Rates of Soils Developed on Eocene Marls and Sandstones in a Mediterranean Catchment (Istria, Croatia)". Land 12, n.º 4 (19 de abril de 2023): 913. http://dx.doi.org/10.3390/land12040913.

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Physical and chemical weathering, together with biological and biochemical processes, form soil from bedrock and strongly influence the chemical composition of natural waters. Erosive processes, primarily through the agents of running water and wind, remove the products of weathering from catchments. The aim was to determine the chemical weathering of minerals because of changes in land-use and natural forestation in two small neighboring catchments of the rivers Argilla and Bazuja. Agricultural land-use practice is very intense in the Argilla catchment, while the Bazuja catchment’s arable land is mostly abandoned, with progressive forestation. Chemical weathering in soils and sediments was evaluated with the aid of bulk chemistry analysis focused on major elements, trace elements, and zirconium. Weathering indices, mass balance, and strain were calculated. The abandonment of arable land and intense forestation in the Bazuja catchment caused increased chemical weathering with the loss of base cations (Ca and Mg) and enrichment of conservative elements (Zr and Ti) in surface horizons. EIC and MTF values are positive (enrichment) in areas with agricultural activities, while forested areas show negative values (loss). A comparison of the oldest and youngest parts of the overbank sediment profiles in the swallow hole zone and stream sediments shows that chemical and mechanical weathering in the Bazuja catchment was similar to present weathering in the Argilla catchment, while agriculture was active in the Bazuja catchment. The integrated knowledge gained in small catchment studies can be broadly applicable to larger systems.
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4

Troch, P. A., G. Carrillo, M. Sivapalan, T. Wagener y K. Sawicz. "Climate-vegetation-soil interactions and long-term hydrologic partitioning: signatures of catchment co-evolution". Hydrology and Earth System Sciences Discussions 10, n.º 3 (7 de marzo de 2013): 2927–54. http://dx.doi.org/10.5194/hessd-10-2927-2013.

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Abstract. Catchment hydrologic partitioning, regional vegetation composition and soil properties are strongly affected by climate, but the effects of climate-vegetation-soil interactions on river basin water balance are still poorly understood. Here we use a physically-based hydrologic model separately parameterized in 12 US catchments across a climate gradient to decouple the impact of climate and landscape properties to gain insight into the role of climate-vegetation-soil interactions in long-term hydrologic partitioning. The 12 catchment models (with different parameterizations) are subjected to the 12 different climate forcings, resulting in 144 10-yr model simulations. The results are analyzed per catchment (one catchment model subjected to 12 climates) and per climate (one climate filtered by 12 different model parameterization), and compared to water balance predictions based on Budyko's hypothesis (E/P = φ (EP/P); E: evaporation, P: precipitation, EP: potential evaporation). We find significant anti-correlation between average deviations of the evaporation index (E/P) computed per catchment vs. per climate, compared to that predicted by Budyko. Catchments that on average produce more E/P have developed in climates that on average produce less E/P, when compared to Budyko's prediction. Water and energy seasonality could not explain these observations, confirming previous results reported by Potter et al. (2005). Next, we analyze which model (i.e., landscape filter) characteristics explain the catchment's tendency to produce more or less E/P. We find that the time scale that controls perched aquifer storage release explains the observed trend. This time scale combines several geomorphologic and hydraulic soil properties. Catchments with relatively longer aquifer storage release time scales produce significantly more E/P. Vegetation in these catchments have longer access to this additional groundwater source and thus are less prone to water stress. Further analysis reveals that climates that give rise to more (less) E/P are associated with catchments that have vegetation with less (more) efficient water use parameters. In particular, the climates with tendency to produce more E/P have catchments that have lower % root fraction and less light use efficiency. Our results suggest that there exists strong interactions between climate, vegetation and soil properties that lead to specific hydrologic partitioning at the catchment scale. This co-evolution of catchment vegetation and soils with climate needs to be further explored to improve our capabilities to predict hydrologic partitioning in ungaged basins.
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5

Troch, P. A., G. Carrillo, M. Sivapalan, T. Wagener y K. Sawicz. "Climate-vegetation-soil interactions and long-term hydrologic partitioning: signatures of catchment co-evolution". Hydrology and Earth System Sciences 17, n.º 6 (18 de junio de 2013): 2209–17. http://dx.doi.org/10.5194/hess-17-2209-2013.

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Abstract. Budyko (1974) postulated that long-term catchment water balance is controlled to first order by the available water and energy. This leads to the interesting question of how do landscape characteristics (soils, geology, vegetation) and climate properties (precipitation, potential evaporation, number of wet and dry days) interact at the catchment scale to produce such a simple and predictable outcome of hydrological partitioning? Here we use a physically-based hydrologic model separately parameterized in 12 US catchments across a climate gradient to decouple the impact of climate and landscape properties to gain insight into the role of climate-vegetation-soil interactions in long-term hydrologic partitioning. The 12 catchment models (with different paramterizations) are subjected to the 12 different climate forcings, resulting in 144 10 yr model simulations. The results are analyzed per catchment (one catchment model subjected to 12 climates) and per climate (one climate filtered by 12 different model parameterization), and compared to water balance predictions based on Budyko's hypothesis (E/P = ϕ (Ep/P); E: evaporation, P: precipitation, Ep: potential evaporation). We find significant anti-correlation between average deviations of the evaporation index (E/P) computed per catchment vs. per climate, compared to that predicted by Budyko. Catchments that on average produce more E/P have developed in climates that on average produce less E/P, when compared to Budyko's prediction. Water and energy seasonality could not explain these observations, confirming previous results reported by Potter et al. (2005). Next, we analyze which model (i.e., landscape filter) characteristics explain the catchment's tendency to produce more or less E/P. We find that the time scale that controls subsurface storage release explains the observed trend. This time scale combines several geomorphologic and hydraulic soil properties. Catchments with relatively longer subsurface storage release time scales produce significantly more E/P. Vegetation in these catchments have longer access to this additional groundwater source and thus are less prone to water stress. Further analysis reveals that climates that give rise to more (less) E/P are associated with catchments that have vegetation with less (more) efficient water use parameters. In particular, the climates with tendency to produce more E/P have catchments that have lower % root fraction and less light use efficiency. Our results suggest that their exists strong interactions between climate, vegetation and soil properties that lead to specific hydrologic partitioning at the catchment scale. This co-evolution of catchment vegetation and soils with climate needs to be further explored to improve our capabilities to predict hydrologic partitioning in ungauged basins.
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6

Jacob, P., S. Palur, S. M. Sameer, M. Sneha, L. Puneeth y B. Namratha. "Geometric characteristics of multitudinous lakes and lake catchments for Bangalore rural catchment". IOP Conference Series: Earth and Environmental Science 1125, n.º 1 (1 de diciembre de 2022): 012005. http://dx.doi.org/10.1088/1755-1315/1125/1/012005.

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Abstract Bangalore is a city of lakes. There are numerous lakes in Bangalore Urban and Rural districts with significant variations in the size of the lakes. The lakes are an essential water source to these areas in the absence of rivers. It is necessary to know the morphometry parameters of the lake and its catchment to compute the volume of water generated and stored in the lakes during rainfall events. The geometric aspects of the lake provide robust knowledge about the hydrologic response of the catchment to rainfall events. The delineation of lake and lake catchment is done in QGIS software. There are 131 lake catchments in the study area whose catchment area varies from 0.20km2 to 22.5km2. The geometric aspects’ average values, namely form factor, compactness coefficient, elongation ratio, and circularity ratio, are 0.815, 1.8, 1, and 0.321, respectively. These parameters are derived from the lake catchment’s area, perimeter, and length.
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7

Drogue, Gilles, Wiem Ben Khediri y Céline Conan. "Added-value from a multi-criteria selection of donor catchments in the prediction of continuous streamflow series at ungauged pollution control-sites". Proceedings of the International Association of Hydrological Sciences 373 (12 de mayo de 2016): 69–72. http://dx.doi.org/10.5194/piahs-373-69-2016.

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Abstract. We explore the potential of a multi-criteria selection of donor catchments in the prediction of continuous streamflow series by the spatial proximity method. Three criteria have been used: (1) spatial proximity; (2) physical similarity; (3) stream gauging network topology. An extensive assessment of our spatial proximity method variant is made on a 149 catchment-data set located in the Rhine-Meuse catchment. The competitiveness of the method is evaluated against spatial interpolation of catchment model parameters with ordinary kriging. We found that the spatial proximity approach is more efficient than ordinary kriging. When distance to upstream/downstream stream gauge stations is considered as a second order criterion in the selection of donor catchments, an unprecedented level of efficiency is reached for nested catchments. Nevertheless, the spatial proximity method does not take advantage from physical similarity between donor catchments and receiver catchments because catchments that are the most hydrologically similar to each catchment poorly match with the catchments that are the most physically similar to each catchment.
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8

Ingle, Vishal K., A. K. Mishra, A. Sarangi, D. K. Singh y V. K. Seghal. "Hydrologic behaviour of Tapi river catchment using morphometric analysis". Journal of Applied and Natural Science 6, n.º 2 (1 de diciembre de 2014): 442–50. http://dx.doi.org/10.31018/jans.v6i2.480.

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The study area Tapi River catchment covers 63,922.91 Sq.Km comprising of 5 five Sub-catchments: Purna river catchment (18,473.6 sq.km) Upper Tapi catchment (10,530.3 sq. km), Middle Tapi catchment (4,997.3 sq km), Girna river catchment (10,176.9 sq.km) and lower Tapi catchment (19,282.5 sq.km.). The drainage network of 5 Sub-catchments was delineated using remote sensing data. The morphometric analysis of 5 Sub-catchments has been carried out using GIS softwares – ArcMap. The drainage network showed that the terrain exhibits dendritic to sub-dendritic drainage pattern. Stream orders ranged from sixth to seventh order. Drainage density varied between 0.39 and 0.43km/ km2and had very coarse to coarse drainage texture. The relief ratio ranged from 0.003 to 0.007. The mean bifurcation ratio varied from 4.24 to 6.10 and falls under normal basin category. The elongation ratio showed that all catchment elongated pattern. Thus, the remote sensing techniques proved to be a competent tool in morphometric analysis.
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9

Thornton, C. M. y B. Yu. "The Brigalow Catchment Study: IV. Clearing brigalow (Acacia harpophylla) for cropping or grazing increases peak runoff rate". Soil Research 54, n.º 6 (2016): 749. http://dx.doi.org/10.1071/sr15121.

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In Queensland, Australia, large tracts of native vegetation have been cleared for agriculture, resulting in substantial hydrological changes in the landscape. Australia’s longest-running paired catchment study, the Brigalow Catchment Study (BCS), was established in 1965 to monitor hydrological changes associated with land development, particularly that of the 1960s Land Development Fitzroy Basin Scheme. The BCS has unequivocally shown that developing brigalow (Acacia harpophylla) for cropping or for grazing doubles runoff volume. However, to date little research had been undertaken to quantify the changes in peak runoff rate when brigalow is cleared for cropping or grazing. The present study compared peak runoff rates from three brigalow catchments, two of which were subsequently cleared for cropping and pasture. Prior to land development, average peak runoff rates from the three brigalow scrub catchments were 3.2, 5 and 2mmh–1 for catchments 1 to 3 respectively. After development, these rates increased to 6.6mmh–1 from the brigalow scrub control catchment (catchment 1), 8.3mmh–1 from the cropping catchment (catchment 2) and 5.6mmh–1 from the pasture catchment (catchment 3). Peak runoff rate increased significantly from both the cropping and pasture catchments after adjusting for the underlying variation in peak runoff rate due to climatic variation between the pre- and post-development periods. The average peak runoff rate increased by 5.4mmh–1 (96%) for the cropping catchment and by 2.6mmh–1 (47%) for the pasture catchment. Increases in peak runoff rate were most prevalent in smaller events with an average recurrence interval of less than 2 years under cropping and 4 years under pasture.
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10

Qiao, Jie, Mike Crang, Liangping Hong y Xiaofeng Li. "Exploring the Benefits of Small Catchments on Rural Spatial Governance in Wuling Mountain Area, China". Sustainability 13, n.º 2 (14 de enero de 2021): 760. http://dx.doi.org/10.3390/su13020760.

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China is facing an important period of rural governance innovation and restructuring of territorial spatial patterns. This paper selects catchments as the most closely related spatial units for rural industrial development and rural settlement activities, profoundly revealing the characteristics of transformational development and spatial governance in mountainous areas. To date, extensive literature in this area has produced a broad multidisciplinary consensus on catchment water and soil conservation and rural industry development; however, the interactive mechanism of ecological, social, and economic networks, and the characteristics behind small catchments which benefit from spatial governance, have never been analyzed and are relatively new to the sphere of rural governance. Our research argues the relative importance of multi-scale catchment units compared with traditional administrative village units in enhancing the organizational benefits of rural revitalization in terms of workforce, resources, and capital, using the case study of a catchment in the Wuling mountainous area. Our study presents a framework to explore the multi-dimensional governance experience of a small catchment in the Wuling mountainous area and proposes to integrate the resource endowment advantages of small catchments into rural industries development and transform the economic and social benefits contained in the ecological environment into multi-scale spatial benefits among farmers, villages, and the regional rural area. However, not all cases provide positive evidence. The overall development of a catchment is confronted with complex constraints, which are mainly related to the development stage and local historical and geographical factors. Furthermore, affected by the top-down “project-system” in the “poverty era”, the logic of “betting on the strong” and the single-centered logic of resource allocation at the grassroots level exacerbated the fragmentation of the mountainous area. Generally speaking, the catchment perspective promotes regional linkage development and multi-center governance modes and triggers multidisciplinary theoretical thinking to some extent. The catchment’s overall development helps play to the comparative advantage of mountainous areas and promotes endogenous sustainable development to a certain degree. However, the promotion of catchment governance in poverty-stricken mountainous areas is faced with a lack of financial foundation and needs support in order to break through the national system and local social constraints.
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Tesis sobre el tema "Catchment"

1

Warburton, Toni. "Catchment". Thesis, The University of Sydney, 2000. https://hdl.handle.net/2123/27946.

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Topological ideas have informed the imprinting moulding and folding of the membrane in my work with container objects. Pertinent aspects of previous work are recounted. Situations pertaining to water and glass as materials and content that relate to my project in contemporary art practice are examined. The ecological significance of water in swamplands focusses content in my work with ornament to evoke nature specific to situation or to place. Filtering metaphors have evolved through explorations of materials and structures.The motif of a water glass is used to invoke the sacred necessity of pure water. Theories of ornament impinge on material investigations and the syntax of moulds. Agency in making and language of process required to work effectively with others to realise mould-blown pieces are investigated. The 'techniques of the body' applied to making and using are discussed with respect to mimetic and vernacular associations of the truncated conical beaker shape and placement and perception in installation practice. Ideas that relate to materiality and residual function, difference and repetition, seek to conflate the vernacular and the uncanny. Hollowness, becoming and Chora, invoke processes and perturbations that I anticipate as catharthic resonance with respect to the visual and haptic experience of the viewer.
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2

Materechera, Fenji. "Towards integrated catchment management : challenges surrounding implementation in the Gamtoos River catchment". Thesis, Nelson Mandela Metropolitan University, 2012. http://hdl.handle.net/10948/d1018553.

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Water resource management has become a pertinent issue of global environmental concern in response to the conditions of a growing global population, increasing development and a limited freshwater supply. It is against the backdrop of such conditions that effective water resource management has gained popularity in seeking to ensure that the needs of the growing population will be met and secured for future generations. The notion of integrated water resource management (IWRM) is a perspective on water resource management that has evolved out of the global opinion that social and ecological systems are linked and therefore cannot be managed separately. The department of water affairs (DWA) in South Africa highlights the importance of approaching management of water resources from a catchment perspective which forms the basis for a particular integrated approach to management called integrated catchment management (ICM). ICM recognizes the catchment as the correct administrative unit for management. It integrates water resources and the land that forms the catchment area in planning and management. Researchers have described the implementation of ICM as being complicated and difficult. This is no exception to South Africa. Principles of ICM have received widespread prominence in South Africa as they have been incorporated into national water policy. Actual implementation however is still in its infancy. The study is therefore a case study of ICM with respect to factors influencing implementation amongst different stakeholders. The study aims to explore the theme of implementation of ICM within the context of the Gamtoos River Catchment with a view toward identifying and addressing challenges that may be more broadly applicable. The study adopts an inductive, exploratory approach to the connection between theory and practice. A systems-based framework characterized by sequential steps similar to that employed in a case study conducted by Bellamy et al. (2001) in Queensland Australia is used to facilitate the evaluation of ICM in the Gamtoos River Catchment. The evaluation is achieved through a three step process of exploration in the current study. Triangulation is applied to the choice of methods of analysis which involves the use of a global analysis method, the use of learning scenarios and a grounded theory method. Findings reveal seven core themes which help to provide a detailed, contextual understanding relating to the status quo for ICM in the catchment. Results from a grounded theory analysis summarized the main challenges to implementation into five broad categories. Based on this analysis method and the application of the three learning scenarios for the Gamtoos River Catchment, the extent to which these challenges exist was discovered. The state of ICM in the catchment was classified as falling within a condition of a level of success being achieved with room for improvement to a condition of optimal ICM. The study concludes that based on the context of ICM being an example of a Complex Adaptive Systems (CAS), this state of ICM in the Gamtoos River Catchment is subject to change. This therefore necessitates the consideration of approaches to implementation that are adaptive to change. Findings may serve to inform decision making on how ICM can be effectively implemented elsewhere in a South African context.
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3

Zanardo, Stefano. "Catchment-scale transport phenomena: rainfall intermittency, age of runoff, anthropic catchment management". Doctoral thesis, Università degli studi di Padova, 2011. http://hdl.handle.net/11577/3427400.

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Complexity of transport phenomena at the catchment scale arises from the interconnection of several processes over a range of spatial and temporal scales. The hydrologic and biogeochemical response of catchments is produced by the highly non-linear interaction between meteorological forcing, landscape heterogeneity, and human activity. As a result, a simple experimental analysis does not give significant insight into the processes involved and exploring such phenomena is a challenging task. Nevertheless, investigating these processes is important in order to evaluate the dominant controls on catchment-scale mechanisms as well as predict the response of the systems to human activities and climate-related perturbations. This is particularly relevant in changing environments, where a deep understanding of the systems is critical for a proper management of landscape and water resources. This thesis aims at exploring catchment-scale transport phenomena by applying novel modeling tools to relevant case studies. Both deterministic and probabilistic approaches are followed, as the latter are required by the random nature physical processes whereas the former allow for the analysis of the systems under certain, well defined conditions. Model evaluations are supported by robust analyses of extensive datasets, whose purpose is not simply to validate the approaches but rather to provide further insight into the processes. Long term effects of hydrologic fluctuations are captured by stochastic models in terms of steady state statistical distributions of relevant physical quantities. This modeling approach provides a causal relationship between daily rainfall random fluctuations and daily stream flow variability, this, in turn, relates to the variability of stream stage, and in-stream nutrients removal. The stochastic approach is further extended to evaluate the effect of the daily variability of precipitation on the inter-annual variability of water balance. The application of the model to a large amount of experimental catchment across the United States shows how there exist regions where the daily variability of water partitioning is the major control on inter-annual variability of water balance, and regions where the inter-annual variability arises from controls other than the simple scaling-up of short term processes. A deterministic approach, namely Mass Response Function (MRF), is used to evaluate the effect of soil heterogeneities, as well as the effect of water-mixing mechanisms on the hydrologic and biogeochemical response of catchments. The main idea underlying this framework is that the evolution of solute and water pulses moving within the soil largely depends on their residence time. The application of the MRF model to a tracer study on nitrates and lithium suggests that runoff is composed by a collection of water particles with a mixture of ages and that, in this case, the effect of unmixed preferential flow can be ruled out. The MRF is then coupled with a `source zone' model suitable to describe pesticides release from the top soil layer in intensively managed catchments. This additional module proves necessary to properly simulate the pesticides transport mechanisms. The application of the model to a decade-long water-quality monitoring dataset suggests that the prediction of the agro-chemical response requires an accurate knowledge of the management practices. In particular, the interval between the occurrence of large rainfall events and the pesticide application dates seems to constitute the main control on the pesticide release dynamics. These considerations are of particular interest when modeling pesticides as they are exclusively of anthropic origin. Whereas, when considering other types contaminant such as nutrients, the anthropic component may be clouded by the effect of chemical soil production.
La complessità dei fenomeni di trasporto alla scala di bacino deriva dall'interconnessione di diversi processi su diverse scale temporali e spaziali. La risposta idrologica e biogeochimica dei bacini è il prodotto di interazioni altamente non lineari tra le forzanti meteorologiche, le eterogeneità del territorio e le attività umane. Di conseguenza, semplici analisi sperimentali non permettono un'adeguata comprensione dei processi coinvolti, e l'analisi di questi fenomeni rappresenta un obiettivo ambizioso. Tuttavia, l'esplorazione di questi processi è importante per valutare i controlli dominanti su meccanismi di trasporto alla scala di bacino e predirne la risposta idrologica e biogeochimica a perturbazioni climatiche ed alla gestione del territorio. Questo è particolarmente importante nel caso di ecosistemi in cambiamento, dove una profonda comprensione dei processi è fondamentale per una corretta gestione del territorio e delle risorse idriche. Lo scopo di questa tesi è l'analisi di fenomeni di trasporto alla scala di bacino attraverso l'applicazione di nuovi approcci modellistici a casi studio di interesse. A questo scopo si è utilizzato sia un approccio probabilistico sia un approccio deterministico: il primo richiesto dalla natura casuale di numerosi processi fisici coinvolti, il secondo necessario per analizzare le dinamiche sotto condizioni ben definite. Lo studio è supportato da una robusta analisi dei dati disponibili, il cui scopo non è semplicemente quello di validare i modelli ma piuttosto di fornire una comprensione più approfondita delle dinamiche in gioco. Gli effetti di fluttuazioni idrologiche nel lungo termine sono simulati attraverso distribuzioni di probabilità stazionarie relative a grandezze fisiche rilevanti. Questo approccio modellistico fornisce una relazione causale tra la fluttuazione giornaliera della pioggia e la fluttuazione giornaliera dei deflussi, la quale, a sua volta, è messa in relazione con l'atezza di moto nei corsi d'acqua ed infine con i processi rimozione di nutrienti nelle reti idrografiche. Tale approccio stocastico è successivamente utilizzato per valutare l'effetto delle fluttuazioni giornaliere delle precipitazioni sulla variabilità inter-annuale del bilancio idrico alla scala di bacino. L'applicazione del modello ad un esteso numero di bacini sperimentali, distribuiti sul territorio degli Stati Uniti, mostra come esistano alcune regioni dove le fluttuazioni della pioggia giornaliera rappresentano il controllo principale sulla la variabilità inter-annuale del bilancio idrico, ed altre regioni dove questa variabilità è determinata da altri processi che non necessariamente avvengono alla scala giornaliera. Un modello deterministico, detto Mass Response Function (MRF), è utilizzato per valutare l'effetto delle eterogeneità del suolo e dei meccanismi di mescolamento sulla risposta idrologica e biogeochimica dei bacini. Il concetto principale che caratterizza questo approccio si basa sull'assunzione che l'evoluzione degli impulsi di acqua e soluti che si muovono nel suolo sia prevalentemente governata dal relativo tempo di residenza. L'applicazione del modello MRF ad uno studio di traccianti effettuato utilizzando nitrati e litio suggerisce che i deflussi sono composti da un insieme di impulsi aventi differenti età e che, almeno nel caso in esame, l'effetto di flussi preferenziali non mescolati può essere trascurato. Il modello MRF è stato successivamente accoppiato con un modello detto `source zone' atto a simulare il rilascio di pesticidi dallo strato superficiale del suolo in bacini intensamente antropizzati. L'aggiunta di questo secondo modello si è dimostrata necessaria per rappresentare accuratamente le dinamiche di trasporto dei pesticidi. L'applicazione ad un caso di studio sperimentale suggerisce come la previsione della risposta agro-chimica richieda un'accurata conoscenza della pratiche agricole utilizzate. In particolare, l'intervallo tra la data di applicazione dei pesticidi e i primi eventi di pioggia successivi sembra costituire il fattore principale nelle dinamiche di rilascio di contaminanti. Queste considerazioni sono di particolare interesse nella modellazione dei pesticidi in quanto di origine esclusivamente antropica. Nel caso invece della modellazione contaminanti quali i nutrienti, la componente antropica può venire oscurata dalla produzione chimica del suolo.
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Mehl, Daniel James Gustav. "Assessing the influence of floodplain wetlands on wet and dry season river flows along the Nuwejaars River, Western Cape, South Africa". University of the Western Cape, 2019. http://hdl.handle.net/11394/7031.

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>Magister Scientiae - MSc
Improved knowledge is required on the quantity and source of water resources, particularly evident during periods of drought currently being faced in South Africa. There is inadequate knowledge with regards to the flood attenuating properties of wetlands, particularly evident in the ungauged catchments of Southern Africa. This study aims to improve the knowledge on the contribution of flow from tributaries with headwaters in mountainous regions to low lying areas and the effects of wetlands on river flow patterns. Several river flow monitoring sites were established along the major upper tributaries of the Nuwejaars River at which daily water levels were recorded and bi-weekly discharge measurements were conducted. Weather data was collected using four automatic weather stations and three automatic rain gauges’ setup throughout the catchment. Rainfall data coupled with rating curves and daily discharges were used to assess the flow responses of these tributaries to rainfall events. Additionally, stable isotope analysis and basic water quality analysis was used to determine the major sources of flow within the major tributaries. The rainfall and river flow data collected, coupled with the characterization of the wetland was used to determine the flood attenuation capabilities of the wetland. Lastly, a conceptual model based on a basic water balance was developed to further explain the role of the wetland and its effects on river flows. The results showed a 27-hour lag time in peak flows from the upper tributaries at the inflows of the wetland to the outflow. Two of the upper tributaries had flow throughout the year and were fed by springs in the upper mountainous regions of the catchment and all tributaries were largely reliant on rainfall for peak flows. The temporary storage of flows within the wetland occurred as a result of the Nuwejaars River bursting its banks, filling of pools, or ponds and the Voëlvlei Lake. It was concluded that the wetland increased the travel time and decreased the magnitude of flows of the Nuwejaars River. However, due to the fact that wetlands are interlinked on a catchment scale and have a collective effect on flood attenuation this study may be improved by looking at the wetlands within the catchment holistically.
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Shepherd, Christina. "Towards integrated catchment management : institutional arrangements : a case study of the Patawalonga catchment /". Title page, table of contents and abstract only, 1994. http://web4.library.adelaide.edu.au/theses/09ENV/09envs5478.pdf.

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Driscoll, Jessica Margit. "Impacts of Climate Change in Snowmelt-Dominated Alpine Catchments: Development and Assessment of Comparative Methods to Quantify the Role of Dynamic Storage and Subsurface Hydrologic Processes". Diss., The University of Arizona, 2015. http://hdl.handle.net/10150/560860.

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Snowmelt-dominated systems are a significant source of water supply for the Western United States. Changes in timing and duration of snowmelt are predicted to continue under climate change; however, the impact this change will have on water resources is not well understood. The ability to compare hydrologic processes across space and time is critical to accurately assess the physical and chemical response of headwater systems to climate change. This dissertation builds upon previous work by using long-term data from two snowmelt dominated catchments to investigate the response of hydrologic processes at different temporal and spatial scales. First, results from an hourly spatially-distributed energy balance snowmelt model were spatially and temporally aggregated to provide daily, catchment-wide snowmelt estimates, which, along with measured discharge and hydrochemical data were used to assess and compare hydrologic processes which occur on an annual scale in two headwater catchments for an eleven year study period. Second, the magnitude and timing of snowmelt, discharge fluxes and hydrochemical data were used to assess and compare inter-annual catchment response in two headwater catchments for an eleven year study period. Third, a pseudoinverse method was developed to compare mineral weathering fluxes in a series of nested sub-catchments over an eleven year study period. Advances from this work include the use of an independently-created energy balance snowmelt model for spatially-distributed hydrologic input for catchment-scale water balance, application of a quantifiable measure of catchment-scale hydrologic flux hysteresis and the development of a method to quantify and compare mineral weathering reactions between source waters across space and time. These methods were utilized to quantify and assess its role of dynamic storage in mitigating climate change response.
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7

Davidson, Celene. "Catchment diagnostic framework for the Klip River catchment, Vaal Barrage, October 1998 - September 1999". Thesis, University of the Witwatersrand, Johannesburg, 2003. http://hdl.handle.net/10539/21298.

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This research report is a completed Catchment Diagnostic Framework (CDF) for the Klip River catchment (Johannesburg) for the period October 1998 to September 1999. The framework consists of a catchment description and a diagnostic index which provide a simple and representative view of the catchment and its characteristics and assist in identifying problem areas. GIS maps, graphs and tables are used to provide a background of the catchment. The Diagnostic Index is based on a set of Indicators that are calculated and then scored according to a rating system allowing for the calculation of an overall value for the catchment. The indicators and description cover resource conditions, socioeconomics, water quantity, water quality and management. Using this CDF it was found that the Klip River catchment is highly altered due to mining, urban, industrial and agricultural development. All of these have impacts on the beneficial use of the Klip River itself and on the downstream users of the Vaal Barrage.
AC 2016
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8

Lindblom, Karin. "PFAS in Gullspångsälvens catchment area". Thesis, Örebro universitet, Institutionen för naturvetenskap och teknik, 2017. http://urn.kb.se/resolve?urn=urn:nbn:se:oru:diva-64608.

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Gullspångsälvens catchment area starts in the county of Dalarna and ends in the lake Vänern. On the way the water passes a couple of villages and small towns. The aim of the project is to identify point sources of PFAS and see their influence on the PFAS levels in the systems surface water. In the area some point sources have been identified. The villages and towns have waste water treatment plants and there are also a couple of landfills. Sampling have been carried out at expected point sources as well as in the surface water close to human activities. The samples have been extracted with SPE and analysed with LCMS-MS. Results show that the levels of PFAS is increasing through the system and that the expected point sources release PFAS to the environment. It was also possible to identify an earlier unknown point source. Compared with levels in other parts of Sweden (S-EPA, 2016) the levels of PFAS in the system is within a normal range except for the levels close to the until now unknown point source.
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9

Singh, Anupam K. "Towards decision support models for an ungauded catchment in India : the case of Anas catchment". Karlsruhe : Institut für Wasserwirtschaft und Kulturtechnik, Universität Karlsruhe (TH), 2004. http://www.ubka.uni-karlsruhe.de/eva/index.html.

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Higgins, David Ian. "Catchment scale influences on brown trout fry populations in the Upper Ure catchment, North Yorkshire". Thesis, Durham University, 2011. http://etheses.dur.ac.uk/3571/.

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A multi-scale approach for restoration site selection is presented and applied to an upland catchment, the River Ure, North Yorkshire. Traditional survey methods, advances in remote sensing, Geographical Information Systems (GIS) and risk-based fine sediment modelling using the SCIMAP module are combined to gather data at the catchment-scale through to the in-stream habitat-scale. The data gathered have been assessed against spatially distributed brown trout fry populations using Pearson’s correlation and multiple stepwise regressions. Fine sediment was shown to have a positive correlation with fry populations when upland drainage channels (grips) were added to the SCIMAP model. This suggests risk from peatland drainage is realised further down the catchment where eroded sediments are deposited. Farm-scale SCIMAP modelling was tested against farmers’ knowledge with variable results. It appears there is a cultural response to risk developed over generations. Management of meadows and pasture land through sub-surface drainage and stock rotation resulted in the risk being negated or re-routed across the holding. At other locations apparently low-risk zones become risky through less sensitive farming methods. This multi-scale approach reveals that the largest impacts on brown trout recruitment operate at the habitat-adjacent scale in tributaries with small upstream areas. The results show a hierarchy of impact, and risk-filters, arising from different intensity land management. This offers potential for targeted restoration site selection. In low-order streams it seems that restoration measures which exclude livestock, and provide bankside shading, can be effective. At such sites the catchment-scale shows a reduced signal on in-stream biota. Thus, brown trout stocks could be significantly enhanced by targeting restoration at riffle-habitat zones and adjacent land in order to disconnect the stream from farm-derived impacts and through adding structure to the stream channel.
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Libros sobre el tema "Catchment"

1

Catchment: Poems. Baton Rouge: Louisiana State University Press, 2009.

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1959-, Souaid Carolyn Marie, ed. Catchment area. Winnipeg, Man: Signature Editions, 2010.

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Kusunoki, F. T. Wakida. Catchment management planning - recommendations for its development in Mexican river catchments, with emphasis on the Tijuana River catchment. Oxford: Oxford Brookes University, 1996.

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Julian, Fennessy y Desert Research Foundation of Namibia, eds. Hoanib River catchment. Windhoek: Desert Research Foundation of Namibia, 2004.

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Ferrier, Robert C. y Alan Jenkins, eds. Handbook of Catchment Management. Oxford, UK: Wiley-Blackwell, 2009. http://dx.doi.org/10.1002/9781444307672.

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C, Ferrier Robert y Jenkins Alan, eds. Handbook of catchment management. Chichester, West Sussex, UK: Blackwell, 2010.

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National Rivers Authority. Severn-Trent Region., ed. Tame catchment management plan. Lichfield: NRA, 1996.

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Agency, Environment, ed. Tame catchment management plan. Lichfield: Environment Agency, 1996.

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9

Burn, Donald H. Catchment classification applied to the estimation of hydrological parameters at ungauged catchments. Wallingford: Institute of Hydrology, 1992.

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Bren, Leon. Forest Hydrology and Catchment Management. Dordrecht: Springer Netherlands, 2015. http://dx.doi.org/10.1007/978-94-017-9337-7.

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Capítulos de libros sobre el tema "Catchment"

1

De Graff, Jerome V. "Catchment". En Selective Neck Dissection for Oral Cancer, 1–2. Cham: Springer International Publishing, 2017. http://dx.doi.org/10.1007/978-3-319-12127-7_46-1.

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De Graff, Jerome V. "Catchment". En Encyclopedia of Earth Sciences Series, 106–7. Cham: Springer International Publishing, 2018. http://dx.doi.org/10.1007/978-3-319-73568-9_46.

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Sene, Kevin. "Catchment Monitoring". En Flash Floods, 71–100. Dordrecht: Springer Netherlands, 2012. http://dx.doi.org/10.1007/978-94-007-5164-4_3.

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Sene, Kevin. "Catchment Monitoring". En Hydrometeorology, 71–104. Cham: Springer International Publishing, 2016. http://dx.doi.org/10.1007/978-3-319-23546-2_3.

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Dobhal, D. P. "Catchment Glacier". En Encyclopedia of Earth Sciences Series, 127. Dordrecht: Springer Netherlands, 2011. http://dx.doi.org/10.1007/978-90-481-2642-2_54.

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Kern, Ulrich, Frank Wendland y Ekkehard Christoffels. "Catchment Modeling". En Environmental Science and Engineering, 171–216. Berlin, Heidelberg: Springer Berlin Heidelberg, 2007. http://dx.doi.org/10.1007/978-3-540-34785-9_5.

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Cooper, Richard J. y Kevin M. Hiscock. "Catchment Water Resources". En Landscape Series, 153–78. Dordrecht: Springer Netherlands, 2019. http://dx.doi.org/10.1007/978-94-024-1681-7_11.

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Downs, Peter W. y Gary Priestnall. "Modelling Catchment Processes". En Tools in Fluvial Geomorphology, 205–30. Chichester, UK: John Wiley & Sons, Ltd, 2005. http://dx.doi.org/10.1002/0470868333.ch8.

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McDowell, R. W., R. M. Monaghan, M. E. Close y C. C. Tanner. "Agricultural Catchment Restoration". En Lake Restoration Handbook, 107–27. Cham: Springer International Publishing, 2018. http://dx.doi.org/10.1007/978-3-319-93043-5_4.

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Green, Jim. "The Kyoga Catchment". En The Nile, 205–14. Dordrecht: Springer Netherlands, 2009. http://dx.doi.org/10.1007/978-1-4020-9726-3_11.

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Actas de conferencias sobre el tema "Catchment"

1

Domnin, Dmitry, Dmitry Domnin, Boris Chubarenko, Boris Chubarenko, Rene Capell y Rene Capell. "MATHEMATICAL MODELING OF NUTRIENT LOADING FROM SMALL CATCHMENTS OF THE VISTULA LAGOON". En Managing risks to coastal regions and communities in a changing world. Academus Publishing, 2017. http://dx.doi.org/10.31519/conferencearticle_5b1b93dfde6248.02952871.

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Vistula Lagoon as a part of the coastal zone translates nutrient load from catchment to the Baltic Sea. Catchments of the Primorskaya River (small settlements, mostly agricultural area, 120 km2) and Banówka-Mamonovka River (transboundary catchment between Russia and Poland, relatively big settlements, food production enterprises, agricultural activity, 490 km2) were selected as test ones for the Vistula Lagoon catchment (23 870 km2). Assessment of the retention of total nitrogen and phosphorus in the catchment and the transformation of nutrient load from anthropogenic sources while passing the catchment were studied by using open source numerical modeling tools. Initial data comprises the geomorphic characteristics, river net data, information on land use and nutrient point sources, time series of temperature, precipitation. Runoff was simulated by hydrological model HYPE considering the evaporation and infiltration into the soil. Retention and transport of nutrients were accessed using the model FyrisNP. Source apportionment was made for the nutrient load discharging from both catchments to the Vistula Lagoon. The greatest amount of nutrients in final discharge is coming from the arable land (50-80%), point sources constitute a smaller proportion (5-30%). The results will be used to obtain the first order approximation of the nutrient load from other small rivers of the Vistula Lagoon catchment and from the biggest river in the area, the Pregolya River (15 300 km2) by analogy.
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Domnin, Dmitry, Dmitry Domnin, Boris Chubarenko, Boris Chubarenko, Rene Capell y Rene Capell. "MATHEMATICAL MODELING OF NUTRIENT LOADING FROM SMALL CATCHMENTS OF THE VISTULA LAGOON". En Managing risks to coastal regions and communities in a changing world. Academus Publishing, 2017. http://dx.doi.org/10.21610/conferencearticle_58b431754b7a5.

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Vistula Lagoon as a part of the coastal zone translates nutrient load from catchment to the Baltic Sea. Catchments of the Primorskaya River (small settlements, mostly agricultural area, 120 km2) and Banówka-Mamonovka River (transboundary catchment between Russia and Poland, relatively big settlements, food production enterprises, agricultural activity, 490 km2) were selected as test ones for the Vistula Lagoon catchment (23 870 km2). Assessment of the retention of total nitrogen and phosphorus in the catchment and the transformation of nutrient load from anthropogenic sources while passing the catchment were studied by using open source numerical modeling tools. Initial data comprises the geomorphic characteristics, river net data, information on land use and nutrient point sources, time series of temperature, precipitation. Runoff was simulated by hydrological model HYPE considering the evaporation and infiltration into the soil. Retention and transport of nutrients were accessed using the model FyrisNP. Source apportionment was made for the nutrient load discharging from both catchments to the Vistula Lagoon. The greatest amount of nutrients in final discharge is coming from the arable land (50-80%), point sources constitute a smaller proportion (5-30%). The results will be used to obtain the first order approximation of the nutrient load from other small rivers of the Vistula Lagoon catchment and from the biggest river in the area, the Pregolya River (15 300 km2) by analogy.
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Sapač, Klaudija, Simon Rusjan, Nejc Bezak y Mojca Šraj. "ANALYSIS OF LOW-FLOW CONDITIONS IN A HETEROGENEOUS KARST CATCHMENT AS A BASIS FOR FUTURE PLANNING OF WATER RESOURCE MANAGEMENT". En XXVII Conference of the Danubian Countries on Hydrological Forecasting and Hydrological Bases of Water Management. Nika-Tsentr, 2020. http://dx.doi.org/10.15407/uhmi.conference.01.20.

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Understanding and prediction of low-flow conditions are fundamental for efficient water resources planning and management as well as for identification of water-related environmental problems. This is problematic especially in view of water use in economic sectors (e.g., tourism) where water-use peaks usually coincide with low-flow conditions in the summer time. In our study, we evaluated various low-flow characteristics at 11 water stations in the non-homogenous Ljubljanica river catchment in Slovenia. Approximately 90% of the catchment is covered by karst with a diverse subsurface, consisting of numerous karst caves. The streams in the remaining part of the catchment have mainly torrential characteristics. Based on daily discharge data we calculated and analyzed values of 5 low-flow indices. In addition, by analyzing hydrograph recession curves, recession constants were determined to assess the catchment’s responsiveness to the absence of precipitation. By using various calculation criteria, we analyzed the influence of individual criteria on the values of low-flow recession constants. Recession curves are widely used in different fields of hydrology, for example in hydrological models, baseflow studies, for low-flow forecasting, and in assessing groundwater storages which are crucial in view of assessing water availability for planning water resources management. Moreover, in the study we also investigated the possible impact of projected climate change (scenario RCP4.5) on low-flow conditions in two sub-catchments of the Ljubljanica river catchment. For the evaluation we used the lumped conceptual hydrological model implemented in the R package airGR. For periods 2011-2040, 2041-2070, and 2071-2100 low-flow conditions were evaluated based on flow duration curves compared with the 1981-2010 period. The lowest discharges at all water stations in the Ljubljanica river catchment occur mostly during the summer months. Our results for the future show that we can expect a decrease of the lowest low-flows in the first two 30-year periods, while in the last one low-flows could increase by approx. 15%. However, the uncertainty/variability of the results is very high and as such should be taken into account when interpreting and using the results. This study demonstrates that evaluation of several low-flow characteristics is needed for a comprehensive and holistic overview of low-flow dynamics. In non-homogeneous catchments with a high karstic influence, the hydrogeological conditions of rivers should also be taken into account in order to adequately interpret the results of low-flow analyses. This proved to be important even in case of neighboring water stations.
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Jeníček, Michal, Ondřej Nedělčev, Radovan Tyl, Ondřej Ledvinka, Václav Vajskebr, Petr Šercl, Jana Bernsteinová, Jakub Langhammer y Jan Unucka. "CAMELS-CZ: A catchment attribute database for hydrological and climatological studies using a large sample of catchments". En První konference PERUN. Český hydrometeorologický ústav, 2023. http://dx.doi.org/10.59984/978-80-7653-063-8.14.

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Hydrological methods based on the analysis of data from a large sample of catchments with different characteristics (large-sample hydrology; comparative hydrology) allow a comprehensive analysis of the hydrological regime and thus a description of hydrological variability and change in the components of the water balance. These methods provide insight into hydrological processes that are shaped by environmental and climatic factors and allow more general conclusions to be drawn. However, in addition to climate and runoff data, catchment attributes, such as geology, soils, topography and vegetation, are essential for effective hydrological behaviour analysis. For these reasons, the global hydrological community has recently developed a number of freely available large-scale datasets known as CAMELS (Catchment Attributes and MEteorology for Large-sample Studies), which provide catchment attributes, as well as hydrological and meteorological time series, in a comparable structure at national scales. The aim of this contribution is to present the current state of preparation the CAMELS database for Czechia (CAMELS-CZ) as a reference data platform for analysis and modelling, using large-sample of catchments.
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Sánchez-Murillo, Ricardo. "DOC transport and export in a dynamic tropical catchment". En I Congreso Internacional de Ciencias Exactas y Naturales. Universidad Nacional, 2019. http://dx.doi.org/10.15359/cicen.1.35.

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Dissolved organic carbon (DOC) transport and export from headwater forests into freshwaters in highly dynamic tropical catchments are still understudied. Here, we present a DOC analysis (2017) in a pristine and small (~2.6 km2) tropical catchment of Costa Rica. Storm flows governed a rapid surface and lateral allochthonous DOC transport (62.2% of the annual DOC export). Cross-correlation analysis of rainfall and stream discharge indicated that DOC transport occurred on average ~1.25 hours after the rainfall maxima, with large contributions of event water, ranging from 42.4±0.3% up to 98.2±0.3% of the total discharge. Carbon export flux (annual mean=6.7±0.1 g C m-2 yr-1) was greater than values reported in subtropical and temperate catchments. Specific ultraviolet absorbance indicated a mixture of hydrophobic humic and hydrophilic non-humic matter during both baseflow and storm events. Our results highlight the rapid storm-driven DOC transport and export as well as low biogeochemical attenuation during baseflow episodes in a climate sensitive hot-spot. By understanding the key factors controlling the amount of organic carbon transported to streams in dynamic tropical landscapes, better global and catchment-scale model assessments, conservation practices, and water treatment innovations can be identified.
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Phillips, B. C. y S. Yu. "Catchment Based Water Quality Modelling in Urbanising Catchments in Australia". En Specialty Symposium on Urban Drainage Modeling at the World Water and Environmental Resources Congress 2001. Reston, VA: American Society of Civil Engineers, 2001. http://dx.doi.org/10.1061/40583(275)24.

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Barros, M. T. L., M. F. A. Porto y J. L. B. Brandão. "Urban Catchment Management". En Watershed Management Conference 2005. Reston, VA: American Society of Civil Engineers, 2005. http://dx.doi.org/10.1061/40763(178)141.

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Duncan, S. "Centralised catchment management". En IET Water Event 2013: Process Control and Automation. Institution of Engineering and Technology, 2013. http://dx.doi.org/10.1049/ic.2013.0193.

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Uhrova, Marie, Josef Krecek, Eva Pazourkova y Jiri Vritska. "DENDROGEOMORPHIC ANALYSIS OF FLASH FLOODS IN A SMALL FOREST CATCHMENT". En 23rd SGEM International Multidisciplinary Scientific GeoConference 2023. STEF92 Technology, 2023. http://dx.doi.org/10.5593/sgem2023v/3.2/s12.09.

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Flash floods represent one of the most significant natural hazards in headwater catchments facing the lack of systematic hydrological monitoring. This study focus on the detection of flash floods on growth disturbances detected at trees of European beech (Fagus sylvatica L.) located in the torrential channel of the Holubi Potok stream in the Jizera Mountains (North Bohemia, Czech Republic). At the injured stems, flood scars were identified and core samples dated by tree ring analysis; the intensity of the disturbance clearly depends on geomorphology of the stream channel. These data were compared with 40 years of hydrometric measurements at the catchment outlet. The flood injuries were detected in the last 65 years, and those flood signs occurred on average every 12-13 years. All of them correspond with intensive summer rainstorms. Flood waves exceeding the gauging capacity or the period of hydrometric observation were reconstructed by HEC- HMS 4.4 and HEC-RAS 5.0.3 tools. The applied approach contributed to the extrapolation and correction of the standard flood frequency curve at the investigated catchment.
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Zhang, Lilin, Michael Marshall, Anton Vrieling y Andrew Nelson. "Association of catchment characteristics to Budyko hydrologic model’s uncertainty in humid catchments". En Remote Sensing for Agriculture, Ecosystems, and Hydrology XXV, editado por Christopher M. Neale y Antonino Maltese. SPIE, 2023. http://dx.doi.org/10.1117/12.2679836.

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Informes sobre el tema "Catchment"

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Sondheim, M. y C. Hodgson. Common hydrology features (CHyF) logical model. Natural Resources Canada/CMSS/Information Management, 2024. http://dx.doi.org/10.4095/328952.

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The Open Geospatial Consortium has defined "OGC WaterML 2: Part 3 - Surface Hydrology Features (HY_Features) - Conceptual Model", but not any particular implementation of it. The Common Hydrology Features (CHyF) model extends HY_Features and makes some minor changes to it required for implementation and the delivery of high performance services. HY_Features discusses catchment coverage and topological relations. In CHyF these are key ideas, as is the notion that hydrologically defined network components form elements of a mathematical graph, allowing for very fast network traversal. HY_Features defines catchments and catchment networks, as well as rivers, channels, flowpaths and hydrographic networks. The CHyF logical model specifies a profile and some extensions to HY_Features, as required to implement topological and graph relations. This starts with the definition of elementary catchments and elementary flowpaths, which are treated as fundamental elements. They are tightly specified terms corresponding to basic catchments and flowpaths in HY_Features and the basic components in the standard reach-catchment model (Maidment and Clark, 2016). If they are subdivided, the result is simply more elementary catchments and elementary flowpaths. Consequently, they are the building blocks used to form complementary coverages as well as a graph structure referred to as a hygraph. Building the hygraph necessitates that connections between features be manifest through their geometry. Divergences and distributaries are supported in CHyF, as the hygraph need not be hierarchical. Nevertheless, CHyF does recognize hierarchical drainage basins and the value in identifying them explicitly (Blodgett, et al, 2021). Different kinds of elementary catchments and elementary flowpaths are defined in CHyF. Of note is that polygonal waterbody features, or portions of such features, are treated as elementary catchments in their own right. In addition to these water catchments, several kinds of land-based elementary catchments are recognized. These model constructs are compatible with the higher level conceptual model in HY_Features, although they differ in detail from other popular implementation models. With the approach taken it becomes practical to handle very large lakes and rivers, as well as coastal ocean zones. CHyF also includes wetlands, glaciers and snowfields as kinds of hydro features; these features help complete the concept of a catchment coverage as put forward by HY_Features.
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Nimz, G. J. Lithogenic and cosmogenic tracers in catchment hydrology. Office of Scientific and Technical Information (OSTI), enero de 1995. http://dx.doi.org/10.2172/67738.

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Montes, Carlos. El Niño impacts in the Inkomati catchment. Washington, DC: International Food Policy Research Institute, 2023. http://dx.doi.org/10.2499/p15738coll2.136817.

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Montes, Carlo. El Niño impacts in the Inkomati-Usuthu catchment. Washington, DC: International Food Policy Research Institute, 2023. http://dx.doi.org/10.2499/p15738coll2.136848.

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Naeve, Linda L. y Shawn C. Shouse. Rainwater Catchment from a High Tunnel for Irrigation Use. Ames: Iowa State University, Digital Repository, 2012. http://dx.doi.org/10.31274/farmprogressreports-180814-2209.

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McKnight, C., Drew Loney y Kevin Winters. Watershed and catchment meshing Python tool utilizing the XmsMesh meshing software. Engineer Research and Development Center (U.S.), octubre de 2019. http://dx.doi.org/10.21079/11681/34323.

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Joyce, Brian y Doreen Salazar. New WEAP PlugIn calculates water stress, disaggregated by sub-basin. Stockholm Environment Institute, diciembre de 2023. http://dx.doi.org/10.51414/sei2023.062.

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Powers, John W. y III. Dover AFB Catchment Area TRICARE Marketing Plan, 436th Medical Group, Dover AFB, Delaware,. Fort Belvoir, VA: Defense Technical Information Center, junio de 1997. http://dx.doi.org/10.21236/ada372535.

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Duffy, Christopher J., David Brandes, Tong-Ying Shun y Karsten Sedmera. LDMS: A Low-Dimensional Modeling System for Hillslope, Catchment and River-Basin Runoff. Fort Belvoir, VA: Defense Technical Information Center, febrero de 2000. http://dx.doi.org/10.21236/ada378858.

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Optenberg, Scott A., Atanacio C. Guillen, William R. Cahill y Paul L. Frederick. Department of Army Health Services Command CHAMPUS Catastrophic Case Limits Gateway Catchment Areas. Fort Belvoir, VA: Defense Technical Information Center, noviembre de 1991. http://dx.doi.org/10.21236/ada244880.

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