Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 20 of 107 for “"river discharge"”.
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Trends and Extreme Values of River Discharge Time Series
In dieser Dissertation wird ein Datenanalyse-Methodenkanon entwickelt und angewendet, um Trends im Mittelwert und den Extremen von Abflusszeitreihen zu untersuchen. Die Autokorrelationsstruktur der Daten (das Gedächtnis) findet hierbei Berücksichtigung. Ein solcher Ansatz ist zum Beispiel sehr …
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Seasonal precipitation, river discharge, and sediment flux in the western Himalaya
… and glacial melt throughout the Himalaya control river discharge, which is vital for maintaining agriculture, drinking water and hydropower generation. However, the spatiotemporal contribution of these discharge components to Himalayan rivers is not well understood, mainly because of the scarcity …
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Development of hydraulic relationships for estimating in-bank river discharge using remotely sensed data
<p>An evaluation of river hydraulic data currently or potentially available from satellite and other remote platforms was completed, and a set of discharge estimation models proposed that can use the remotely sensed information to estimate discharge with reasonable accuracy. Reasonable accuracy is …
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Climate-induced trends in global riverine water discharge and suspended sediment dynamics in the 21st century
… fluvial processes such as sediment dynamics and riverine water discharge, worldwide. Changes in the magnitude of fluvial water and sediment fluxes can have profound impacts on the functioning and connectivity of earth’s natural systems. This study is focused on isolating the impacts of …
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Climate variability and extreme hydro-meteorological events in the Southern Central Andes, NW Argentina
… Andes comprise the catchments for the La Plata river that traverses one of the most populated and economically relevant areas of South America, there are only few detailed investigations of climate variability and extreme hydro-meteorological events. In this thesis, I focus on deciphering the …
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Water resources management & hydroclimatic data analysis in transboundary river basins under the influence of climate variability & water abstraction : Nile river basin
… witnessed in thechange of land use, damming the rivers and excessive water obstruction andwithdrawal.The sustainable management of the available water resources is essential for futuregenerations and environmental resources, especially with the present and possiblefuture challenges in terms of …
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Data-Driven Modeling of the Lake Chad Basin Hydrologic Systems
… to identify the main climate variables affecting river discharge, lake level, and groundwater level fluctuations and to create data-driven models to predict them by using remote sensing climate data. The climate variables employed for this study are air temperature, precipitation, …
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SENSITIVITY ANALYSIS OF WATER LEVELS AND WAVES IN THE CARMEL RIVER STATE BEACH TO CHANGING BOUNDARY AND MORPHOLOGICAL CONDITIONS IN DELFT3D: CARMEL RIVER LAGOON
… processes driving breaching events at the Carmel River State Beach. This sensitivity analysis varies boundary conditions and morphology inputs based on in-situ environmental data from the March 2020 breaching event. Hydrological sensitivity analysis revealed that when the Carmel River experiences …
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Spatial distribution of global runoff and its storage in river channels
… surface runoff and its horizontal transfers in rivers. The dissertation presents an intensive analysis of the uncertainties in water balance calculations and the impact of uncertainties in the input data and the formulation of the water balance calculations on the runoff estimate. A simple …
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Spatial and temporal variability of tide-induced salt flux in a partially mixed estuary
… the tidal component of salt flux in the Hudson River estuary are investigated using a 3D numerical model. Variations with river discharge, fortnightly tidal forcing, and along channel variability are explored. Four river discharge conditions were considered: 1200 m3 s-1, 600 m3 s-1, 300 m3 s-1, …
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Spatial and temporal variability of tide-induced salt flux in a partially mixed estuary
… the tidal component of salt flux in the Hudson River estuary are investigated using a 3D numerical model. Variations with river discharge, fortnightly tidal forcing, and along channel variability are explored. Four river discharge conditions were considered: 1200 m3 s-1, 600 m3 s-1, 300 m3 s-1, …
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Remote sensing for geomorphic and hydrodynamic modeling and process understanding
River discharge and geomorphic processes controlling floodplain-river interactions are fundamental measures of fluvial geomorphology and important inputs and considerations for hydrodynamic modeling. Due to our anthropogenic dependency and interconnection with rivers, humans have developed …
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Coastal ocean variability off the coast of Taiwan in response to Typhoon Morakot : river forcing, atmospheric forcing, and cold dome dynamics
… on Taiwan’s coastal oceans as a result of river discharge. We do this through the use of a river discharge model and a bulk river-ocean mixing model. We complete a sensitivity study of the primitive-equation ocean model simulations to the different parameters of these models. By varying the …
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Evaluating non-point source microplastic pollution and its impact on biota in the Huron River
… sources of microplastic pollution to the Huron River, 2) if aquatic filter feeders ingest microplastics, and 3) how the interaction of microplastics and pharmaceuticals affect filter feeders. To address my first goal, I measured the microplastic load of the Huron River at Waterworks Park in …
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Coastal ocean variability off the coast of Taiwan in response to typhoon Morakot : river forcing, atmospheric forcing, and cold dome dynamics
… on Taiwan's coastal oceans as a result of river discharge. We do this through the use of a river discharge model and a bulk river-ocean mixing model. We complete a sensitivity study of the primitive-equation ocean model simulations to the different parameters of these models. By varying the …
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Temporal and Spatial Variability of Phytoplankton Biomass in Coastal Mississippi Waters
… Nutrients (nitrate, silicate, phosphate), river discharge, temperature, salinity, stratification, tides, currents and winds were measured in concert with the phytoplankton concentrations. The purpose of this study was to determine the seasonal variability in phytoplankton and what was …
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Modeling the Dispersion of Eastern Oyster Larvae (<i>Crassostrea virginica</i>) and its Effects on the Movement of Disease Resistant Genes in the Delaware Bay Estuary
… release in the middle-lower bay populations. River discharge and spring-neap tides are the main forcing of the residual circulation. salinity and stratification in the Delaware estuary, playing an important role in the larval success and dispersion. Years with low success are related to large …
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Modeling riparian groundwater depth as a function of river flow for the Rio Grande at Albuquerque, NM
… corridor ecological health is strongly tied to river streamflow. As climate change threatens to significantly reduce monthly streamflows in semi-arid regions, riparian groundwater will be similarly reduced, impacting native and non-native flora. This paper presents a geographic information …
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Characterization of a Riparian Wetland Renwick Reservoir, Pembina County, ND
<p>Renwick Reservoir, on the Tongue River near Cavalier, North Dakota, was constructed in 1962 as part of a flood control project. The cost at completion was about $350,000. The reservoir was built assuming a 50-year life expectancy. North Dakota's W ater Quality Assessment Plan concludes that …
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Characterization of the spatial and temporal variability in pan-Arctic, terrestrial hydrology
… far more sensitive to the time-varying climate drivers than to parameterization of the landscape. When appropriate climate data are used, the Pan-Arctic Water Balance Model (PWBM) is able to capture well the variability in seasonal river discharge at the scale of arctic sea basins.</p><p>This …
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