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Rozprawy doktorskie na temat „Sedimentation Yield”

Autor: Grafiati
Data publikacji: 3 czerwca 2025
Data aktualizacji: 31 lipca 2025

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1

Shah, Bashir Hussain. "Land use optimization and sediment yield model for Siran Watershed (Pakistan)." Diss., The University of Arizona, 1985. http://hdl.handle.net/10150/191104.

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The main objective of this study is an assessment of the potential of applying land use optimization methods for minimizing the sediment yield from catchments. The study area is the Siran watershed, a subwatershed of the Tarbela watershed in Pakistan which drains directly into the Tarbela reservoir. It has an area of 4Ub sq. miles and receives 47.82 inches annual average precipitation. The main land use practices on the Siran Watershed are agriculture, rangeland grazing and forestry. A stochastic model for simulating daily precipitation and another for simulating daily maximum temperatures are
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2

White, Susan Mary. "Sediment yield estimation from limited data sets : a Philippines case study." Thesis, University of Exeter, 1992. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.332300.

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Msadala, V. P. "Sediment yield prediction based on analytical methods and mathematical modelling." Thesis, Stellenbosch : University of Stellenbosch, 2009. http://hdl.handle.net/10019.1/2863.

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Thesis (MScEng (Civil Engineering)--University of Stellenbosch, 2009.<br>ENGLISH ABSTRACT: A study of the state of reservoir sedimentation in South Africa based on reservoir sediment deposit data, has shown that a considerable number of reservoirs have serious sedimentation problems. The analysis of the reservoir sediment deposit data showed that almost 25% of the total number of reservoirs have lost between 10 to 30% of their original storage capacity. The average storage loss due to sedimentation in South African reservoirs is approximately 0.3% per year while the average annual storag
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Hamilton, Doann M. "Sediment Yield Analysis of Reservoir #1, Bull Run Watershed, West Cascade Mountains, Oregon." PDXScholar, 1994. https://pdxscholar.library.pdx.edu/open_access_etds/4838.

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Bull Run Watershed was set aside in late the 1800s as the water supply source for the City of Portland. Other than two dams being constructed, Reservoir #1 (1929) and Reservoir #2 (1962), development of the land had been minimal as public access was restricted. In the early 1960s, land management changed with increased road building and timber removal raising concerns about increased sediment discharge into the reservoirs. The objective of this study is to evaluate how much and how fast the sediment has accumulated in Reservoir #1, and to determine if the rate of sediment accumulation has chan
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CHUTACHINDAKATE, CHADIN. "INTEGRATED SEDIMENT APPROACH AND IMPACTS OF CLIMATE CHANGE ON RESERVOIR SEDIMENTATION." 京都大学 (Kyoto University), 2009. http://hdl.handle.net/2433/85392.

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Nowadays the sediment becomes one significant problem to reservoir watershed and it is effect and related to reservoir operation system. As the research topic, an integrated sediment approach and impacts of climate change on reservoir sedimentation, there are three main parts demonstrated in this research that all parts are related together with sediment point of view. Annual sediment depositing volume in reservoir was estimated by general soil loss equation but the efficiency was not acceptable. The first part of this study shows that the efficiency is improved by using general soil loss equa
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Ahamed, Aakash. "Geomorphic and Land Use Controls on Sediment Yield in Eastern USA." Thesis, Boston College, 2014. http://hdl.handle.net/2345/bc-ir:103788.

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Thesis advisor: Noah P. Snyder<br>Thesis advisor: Gabrielle C. David<br>The Reservoir Sedimentation Database (ResSed), a catalogue of reservoirs and depositional data that has recently become publicly available, allows for rapid calculation of sedimentation and capacity-loss rates over short (annual to decadal) timescales. This study is a statistical investigation of factors controlling average sediment yield (Y) in eastern United States watersheds. I develop an ArcGIS-based model that delineates watersheds upstream of ResSed dams and calculate drainage areas to determine Y for 191 eastern US
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7

Lopes, Vicente Lucio 1952. "A numerical model of watershed erosion and sediment yield." Diss., The University of Arizona, 1987. http://hdl.handle.net/10150/191125.

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A physically based, distributed parameter, event oriented, nonlinear, numerical model of watershed response is developed to accommodate the spatial changes in topography, surface roughness, soil properties, concentrated flow patterns and geometry, and land use conditions. The Green and Ampt equation with the ponding time calculation for an unsteady rain is used to compute rainfall excess rates. The kinematic wave equations are used to describe the unsteady one-dimensional overland and channel flow. The unsteady and spatially varying erosion/deposition process on hillslopes and channel systems
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Wang, Yung-Chieh (Becky). "Effects of physical properties and rheological characteristics on critical shear stress of fine sediments." Diss., Georgia Institute of Technology, 2013. http://hdl.handle.net/1853/51723.

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During high flow rates, the acceleration of flow and turbulence around bridge foundations lead to scouring, defined as the removal of bed sediments. Due to the interparticle physico-chemical forces of clay particles, erodibility and transport mechanisms for fine sediments are different from those for coarse sediments, and the capability to predict the erosion resistance of fine sediments is still in question. In this study, silt-clay soil mixtures with different kaolin contents were prepared by mixing ground silica and Georgia kaolin with tap water. Geotechnical tests were carried out to obtai
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9

Lima, Yuri Castro Ponciano. "AnÃlise do Assoreamento de um Pequeno ReservatÃrio: Estudo de caso AÃude BoqueirÃo, Aiuaba, CE." Universidade Federal do CearÃ, 2010. http://www.teses.ufc.br/tde_busca/arquivo.php?codArquivo=5275.

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Conselho Nacional de Desenvolvimento CientÃfico e TecnolÃgico<br>A multiplicaÃÃo da quantidade de pequenos reservatÃrios no semiÃrido nordestino provoca um impacto considerÃvel na disponibilidade hÃdrica das mÃdias e grandes bacias hidrogrÃficas, tornando-se assim, um impeditivo no bom gerenciamento deste recurso. Por outro lado, a pequena aÃudagem tem um importante papel com a retenÃÃo de sedimentos oriundos da erosÃo da bacia hidrogrÃfica, fazendo com que haja a minimizaÃÃo dos impactos causados com o acumulo de sedimento nos reservatÃrios estratÃgicos, causadora da conseqÃente reduÃÃo na di
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10

Hughes, Andrew Owen Physical Environmental &amp Mathematical Sciences Australian Defence Force Academy UNSW. "An assessment of recent changes in catchment sediment sources and sinks, central Queensland, Australia." Awarded by:University of New South Wales - Australian Defence Force Academy. Physical, Environmental & Mathematical Sciences, 2009. http://handle.unsw.edu.au/1959.4/43622.

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Spatial and temporal information on catchment sediment sources and sinks can provide an improved understanding of catchment response to human-induced disturbances. This is essential for the implementation of well-targeted catchment-management decisions. This thesis investigates the nature and timing of catchment response to human activities by examining changes in sediment sources and sinks in a dry-tropical subcatchment of the Great Barrier Reef (GBR) catchment area, in northeastern Australia. Changes in catchment sediment sources, both in terms of spatial provenance and erosion type,
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11

Ramos-Scharrón, Carlos E. "Measuring and predicting erosion and sediment yields on St. John, U.S. Virgin Islands." Access citation, abstract and download form; downloadable file 11.78 Mb, 2004. http://wwwlib.umi.com/dissertations/fullcit/3131697.

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Owens, Philip Neil. "Lake sediment-based sediment yields and erosion rates in the Coast Mountains, British Columbia." Thesis, University of British Columbia, 1990. http://hdl.handle.net/2429/29695.

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Lake sediments have been identified as an alternative to contemporary stream monitoring to establish catchment sediment yields and infer erosion rates. This is due primarily to the longer time period over which the former is based, which makes established yields and rates more representative of means or trends in sedimentation. Studies using lake sediments to establish sediment yields have generally assumed that all the sediment contained within a lake is derived from erosion of the catchment under investigation. This study undermines this assumption by constructing a comprehensive lake sedime
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13

Shah, Bashir Hussain. "Land use potimization [sic] and sediment yield model for Siran Watershed (Pakistan)." 1985. http://etd.library.arizona.edu/etd/GetFileServlet?file=file:///data1/pdf/etd/azu_e9791_1985_478_sip1_w.pdf&type=application/pdf.

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14

Jaiyeola, Adesoji Tunbosun. "Estimation of suspended sediment yield flowing into Inanda Dam using genetic programming." Thesis, 2016. http://hdl.handle.net/10321/1495.

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Submitted in fulfilment of the requirements of the degree of Master of Engineering , Durban University of Technology, Durban, South Africa, 2016.<br>Reservoirs are designed to specific volume called the dead storage to be able to withstand the quantity of particles in the rivers flowing into it during its design period called its economic life. Therefore, accurate calculation of the quantities of sediment being transported is of great significance in environment engineering, hydroelectric equipment longevity, river aesthetics, pollution and channel navigability. In this study different input c
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15

Neil, David Trevor. "The sediment yield response to land use intensification in a humid tropical catchment : the Tully River catchment, Northeast Queensland, Australia." Phd thesis, 1994. http://hdl.handle.net/1885/143539.

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