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 9 of 9 for “"ephemeral stream"”.
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Form and function: quantifying geomorphic heterogeneity and drivers in dryland non-perennial river corridors
… rivers, including intermittent rivers and ephemeral streams, comprise the majority of drainage networks globally. However, ephemeral streams remain understudied compared to perennial counterparts, and the majority of extant studies focus on in-channel dynamics. Floodplains along perennial …
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Facies patterns and controls on sedimentation in the Triassic Chinle formation of Northeast New Mexico
… Formation in northeastern New Mexico consists of ephemeral-stream deposits adjacent to the Ancestral Rocky Mountain uplift and perennial braided-stream deposits on the plains to the east. The two fluvial systems were contemporaneous with the ephemeral rivers existing as transverse tributaries to a …
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MONITORING AND ANALYSIS OF EROSION AND DEPOSITION IN THE DESERT KNOLLS WASH
… of The Desert Knolls Wash (DKW), an unstable ephemeral stream channel in Apple Valley, California. The DKW flows into the Mojave River just upstream of the Upper Mojave Narrows, a historic site that has been the focus of recorded human activity in the region since 1776.</p> <p>Two surveyed …
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Paleoenvironmental analysis of a late Holocene deposit : Stanton site, west-central North Dakota
… Holocene organic deposit in the cutbank of an ephemeral stream on the Missouri Plateau. Strati graphic units of the 104-cm section are, in ascending order: (l) gravel; (2) silty, organic, sandy clay; (3) organic silt; (4) silty, sandy, organic clay; (5) organic silt; (6) sandy, silt, organic …
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Geomorphic modeling and routing improvements for GIS-based watershed assessment in arid regions.
… performance of event-based hydrologic models for ephemeral stream networks declines significantly as watershed size increases. The second is that no single model is capable of simulating runoff, erosion, and geomorphic response in the channel network for multiple consecutive events. A …
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Origin and stratigraphic architecture of the Middle Permian lower and upper Quanzijie low-order cycles, Bogda Mountains, NW China
… lower QZJ LC is mainly composed of meandering streams and associated overbank deposits that formed under a semiarid climate with strong precipitation seasonality and its delineation demonstrates that a process-response approach is effective in time-stratigraphic analysis of complex nonmarine …
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Conceptual, algorithmic, and statistical exploration of relations between runoff generation, stream geomorphology, and watershed topography in West Texas
… hydrologic response. 1. Moving Substrate in an Ephemeral Stream: A Case Study in Bridge Survival (Republished with permission of the Transportation Research Board.) A case study concerns a small bridge site in an arid area where ongoing inhibition of the transport of bed load sediment has caused …
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Factors influencing the mobility of uranium, thorium and rare earth elements at the Steenkampskraal monazite, North Western Cape
… water samples were taken from the slimes dam, an ephemeral stream on the western side of the mine, as well as from the surface of a road shortly after rain, below the tailings. Four water samples were taken from within the underground mine workings (Mainshaft, Main shaft extension, Sump on level 3 …
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Base Flow Recession Analysis for Streamflow and Spring Flow
… The base flow recession analysis for both streamflow and spring flow has been extensively studied in the literature. Studies have shown that the recession behaviors during the early stage and the late stage are different in many watersheds. However, research on the transition from early …