Global ETD Search
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Showing 1 to 8 of 8 for “"stream capture"”.
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Determination of the location of the groundwater divide and nature of groundwater flow paths within a region of active stream capture; the New River watershed
The relatively rapid stream capture of the New River basin by the Roanoke River basin provides a unique example of topographic change within a tectonically inactive environment. A previous investigation of abandoned river deposits has shown the capture of ~225 km2 of New River basin area, which has …
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Constraints on passive margin escarpment evolution from river basin reorganization in Brazil
… the percentage of drainage area exchanged by stream capture as the escarpment drainage divide moves across the landscape. Using two different estimation methods, I find that less than 40% of drainage area is exchanged by stream capture, making divide migration the dominant mechanism for …
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Stream piracy and glacial diversion of Little Missouri River, North Dakota
… W., is characterized by a succession of pirating streams with resulting local inversion of drainage. This cycle of stream capture includes five main stages that are outlined below.</p> <p>Stage No. 1 – Pre-glacial Little Missouri River flowed north to Yellowstone River.</p> <p>Stage No. 2 – Little …
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Topographic asymmetry and climate controls on landscape evolution
… conductivity, soil strength, evidence of stream capture and channel beheadings, and erosion rates determined from cosmogenic radionuclides to determine which asymmetry forming mechanisms are likely responsible for the topographic asymmetry at Gabilan Mesa, a landscape in the central …
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Geographic distribution of southern- and northern-form brook trout populations in southwestern Virginia
… species was once abundant in coldwater lakes and streams throughout its range, but environmental disturbances and the introduction of non-native species have drastically reduced the number and sizes of wild populations. Genetic evidence suggests a division at the subspecies level between southern- …
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Evolution of transient topography on passive margins: A study of landscape disequilibrium in the southern Appalachian Mountains
… driven by the high potential energy of streams flowing across the elevated, slowly eroding Blue Ridge Plateau relative to the present Atlantic and landward interior base levels. Gravel deposits confirm that repeated capture of landward-draining Plateau streams by Atlantic basin streams, …
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The ecology of the two-spined blackfish Gadopsis Bispinosus (Pisces: Gadopsidae)
… was found to be restricted to cool, clear upland streams with rocky, cobble bottoms and relatively intact forest vegetation. It was hypothesised that the presence of the species in the upper Murrumbidgee drainage was due to stream capture, in which the headwater streams from the Murray drainage …
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The ecology of the two-spined blackfish Gadopsis Bispinosus (Pisces: Gadopsidae)
… was found to be restricted to cool, clear upland streams with rocky, cobble bottoms and relatively intact forest vegetation. It was hypothesised that the presence of the species in the upper Murrumbidgee drainage was due to stream capture, in which the headwater streams from the Murray drainage …