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 150 for “"CATCHMENT-AREA"”.
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Hydrological studies of a laboratory catchment area under rainfall simulation
… work using a specially designed laboratory catchment and a rainfall simulator is described. This equipment is regarded as a useful contribution to the study of hydrology and its description is given in the early part of the thesis. Basically the equipment consists of a soil catchment area …
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Human impacts on ecosystems in the Chibefwe river catchment area in Mkushi district, Zambia
… of water quality in the Chibefwe River Catchment area in Mkushi district, Central Province, Zambia. Three study sites were selected on the Chibefwe River: One near the source of the Chibefwe River (this served as a reference site for the study); The second inside the built-up area of …
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Human impacts on ecosystems in the Chibefwe river catchment area in Mkushi district, Zambia
… of water quality in the Chibefwe River Catchment area in Mkushi district, Central Province, Zambia. Three study sites were selected on the Chibefwe River: One near the source of the Chibefwe River (this served as a reference site for the study); The second inside the built-up area of …
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Implications of the Late Quaternary Glacio–Eustatic Sea level Changes in the Black Sea Catchment Area
Water balance of the Black Sea catchment area is studied and volumetric analysis of the Black Sea basin is performed in order to estimate sea level fluctuations during the Last glacial cycle. In order to reconstruct the most plausible scenario of the Black Sea reconnection with the Mediterranean, …
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Is commercial livestock farming environmentally viable within the Orange and Fish River catchment area (OFCA) of Southern Namibia?
There are neither historical nor current baseline information relating to the productivity of the OFCA veld and a definite link between the current crisis and the possibly that it is suffering from the effects of having farmed the OFCA veld into a state of durable suboptimal productivity remains to …
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Familiarizing the Alien: Designing working nodes that reveal the opportunity of invasive alien plants as a resource in the Theewaterskloof catchment area
… of the City of Cape Town's water. However, the catchment area that leads to the dam is almost entirely infested with invasive alien plant species which are the single largest contributor to water loss from the dam (up to ±300 million liters of water are lost per year). Given the context of …
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The contribution of heavy industry and commercial activity at Canning Vale to the loads of nitrogen and phosphorus released in the Bannister Creek catchment area
… and phosphorus) and surfactants from industrial areas to surface drainage is poorly understood. Previous research has mainly focused on the quality of water leaving residential and agricultural areas. In Western Australia, there is growing concern over the health of the Swan-Canning River system, …
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The use of digitally interpreted satellite imagery, with special reference to topographical shadow effects, as an aid to vegetation mapping in the Hottentots Holland Mountain catchment area of the Western Cape Province
… the amount of shadow on the imagery of the study area and to investigate the potential of various spectral band ratios for giving useful management information. It was found that approximately seventeen percent of the image of the Hottentots Holland Mountain Catchment Area is affected by …
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Analysis of temporal and spatial changes in major dissolved salts in the Vaal River system over a 40 year period
… salinity composition of the Vaal River and its catchment area was investigated between 1975-2015. Long-term data sets gathered from a 40-year span collected across nine monitoring station in the study catchment area was analysed. The statistical tool applied for the data analysis is the Maucha …
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Probabilistic source-to-sink analysis of the provenance of the California paleoriver: implications for the early Eocene paleogeography of western North America
… this has on scaling discharge to the paleo-catchment area of the system. We develop new scaling relationships between discharge and catchment area using daily gauging data from 415 rivers worldwide. Previous studies using a global database of rivers use average discharge in scaling …
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Environmental DNA is an Effective Method to Monitor Species in Various Freshwater Habitats
… Pass, Washington. This included a large catchment area within creeks and nearby wetlands historically affected by I-90, including sites where significant habitat improvements had been made. Species-specific primers were used to detect three focal amphibians of varying local abundance and …
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The source of uranium and vanadium at the Langer Heinrich and Klein Trekkopje uranium deposits-genesis and controlling factors for uranium mineralization, Western Namibia.
… During the study, the geology of the area was reviewed and a number of research methods were employed. U and V concentrations and the mineralogy of various rocks in the catchment area were analyzed by ICP-MS, XRF and thin sections. Leachability of various rocks was studied through the …
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The effect of catchment land use on sediment input to Swartvlei
… land use and land management of the Swartvlei catchment area have been studied. Possible causes and the extent of accelerated runoff and sediment loss in different rainfall conditions were determined. Rainfall, water flow, Secchi disc and sediment load data are reviewed and the apparent …
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An investigation of the perceived consequences to employees of reducing employment related trip end choices in Cape Town
… of economic activities relative to residential areas. Additionally, concerns over Peak Oil’s impact on fuel prices means transport will become even more unaffordable in the future. Through a literature review, this thesis understands the precariousness of transport costs and how they are …
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The Ecology and Behaviour of the Common hippopotamus, Hippopotamus amphibious L. in Katavi National Park, Tanzania: Responses to Varying Water Resources
… increasingly planted in upstream regions of the catchment area. Rainfall fell in a pronounced annual cycle. The wet season started in December, increased in January, decreased in February reaching an annual peak in March. The dry season lasted from May to November. Variation in height, biomass …
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On Demand Mobility Cargo Demand Estimation
… some other business or industry in the urban area is worth appreciating. The congestion on ground transportation modes is higher than ever. Since currently the same-day delivery in urban areas is carried mainly by ground modes, the catchment area of this delivery service is limited. The …
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GIS-based analysis of spatial accessibility : an approach to determine public primary healthcare demand in metropolitan areas
… services, particularly in metropolitan areas, is becoming more difficult because of three developments: slow economic growth; the rapid growth of metropolitan areas and their subsequent increases in population. It is thus a challenge to provide what is considered a fair or socially just …
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Rate of psychiatric readmissions and associated factors at Saint John of God Psychiatric Hospital in Mzuzu, Malawi
… Hospital in Mzuzu, Malawi. The specific areas examined were sociodemographic and clinical-related factors associated with readmission. Methods: This was a retrospective cohort case record review study. Two hundred and seventy five clinical files of patients admitted for the first time at …
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Sources of sediments accumulating in the lower Black and Vygekraal Rivers, Cape Town, South Africa
Soil erosion within the catchment areas of the Black, Vygekraal and Elsieskraal Rivers (Cape Town, South Africa) results in sediment transport by these rivers, their tributaries, and the stormwater drainage systems which flow into these rivers. This sedimentary material is subsequently deposited in …
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