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Showing 1 to 20 of 42 for “"Drainage Basins"”.
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Modelling Palaeohydrological Controls in Postglacial Mountain Drainage Basins
… been undertaken. The present study investigates drainage basin hydrology for the Kananaskis Valley immediately after glaciation. Low order drainage basins are analyzed to define a prototypical basin to facilitate groundwater modelling. The surface and groundwater modelling software HydroGeoSphere …
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Morphological Analysis and Hydrologic Response of Small Agricultural Drainage Basins
Made available in DSpace on 2014-12-09T20:03:08Z (GMT). No. of bitstreams: 1 6910826.pdf: 6215252 bytes, checksum: 275b3b3f7c7426a178ce1956ac65b607 (MD5) Previous issue date: 1968
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Detrital muscovite thermochronology in two drainage basins in western Bhutan
New reconnaissance data for a poorly characterized area in the western Bhutan Himalaya show distinction between the 40Ar/39Ar cooling age distributions of detrital minerals in the two river catchments of the Punatsang chu and the Wang chu. Muscovites from five samples of Wang chu river sands yield …
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Comparative Phylogenetic Analysis in Populations of the Western Cottonmouth (Agkistrodon Piscivorus Leucostoma) Distributed in Three North American Drainage Basins
… is distributed in three major North American drainage basins. Using a molecular phylogenetic analysis, Knights et al. (1992) observed that western cottonmouths were highly divergent from both eastern and Florida cottonmouths yet the degree of divergence among populations of the western …
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The Impact of Land Use on Water Quality: a Comparison of the Roaring River and Piney Creek Drainage Basins of Southwest Missouri
This study compares the water quality of two drainage basins in the southwestern MIssouri, Ozarks. The water quality was determined by analyzing for the following parameters: dissolved oxygen, nitrate, fecal coliform bacteria, fecal streptococcus bacteria, and conductivity. The two drainage basins …
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Dye Tracing to Delineate Drainage Basins and Determine Groundwater Sensitivity, Mammoth Cave, Kentucky; with Special Reference to Potential Groundwater Contamination from Spills Along Interstate I-65
… delineated the boundaries of spring groundwater basins for numerous springs along the Green and Barren Rivers. These data showed that 60% of the water that flows through the Turnhole Bend Aquifer comes from beyond the boundaries and protection of Mammoth Cave National Park. This area outside the …
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Coupled length scales in eroding landscapes
… of these with large-scale structure of drainage basins, characteristic coupling length scales are found which indicate an important breaking of scale invariance. We also show that these length scales are related to the average sizes of the individual drainage basins. Our study …
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The characteristics and measurement of winter precipitation in basins of internal drainage in Saskatchewan: a case study of Big Quill Lake
… the winter precipitation in the major internal drainage basins in Saskatchewan. These internal basins constitute twenty per cent of the settled land area of the province. Using stochastic hydrological information, precipitation was demonstrated to be the controlling factor in the level of …
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The Phylogeography of Prosopium in Western North America
… despite its wide distribution in discrete drainage basins in western North America for over four million years. Its closest sister taxa the Bear Lake whitefish (P. abyssicola), Bonneville cisco (P. gemmifer), and Bonneville whitefish (P. spilonotus) are found only in Bear Lake Idaho-Utah …
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The influence of hydrological variability on the spatial distribution and orientation of freshwater mussels (Bivalvia: Unionidae).
An a priori selection of drainage basins in southwestern Ontario and southeastern Michigan was made using records of flow variability. The distribution and relative abundance of mussels (Bivalvia: Unionidae) was determined for three event (i.e., hydrologically flashy) and three stable (i.e., …
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Satellite indices of fluvial influence in coastal waters
… organic carbon fluxes from corresponding drainage basins. The results imply that variability in the flux of dissolved organic carbon across drainage basins imparts distinct variability in the optical characteristics of individual river plumes. Further, it is probable that ocean color …
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Dynamic river networks drive landscape change and biological evolution
… the processes that govern the dynamics of river basins and the ways in which these processes may influence the evolution of aquatic life. In Chapters 1-3 of my thesis I investigate river network reorganization, a phenomenon that occurs when some river basins erode faster than their neighbors, …
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Correspondence Between Aquatic Ecoregions and the Distribution of Fish Communities of Eastern Oklahoma
… must be refined and expanded to include major drainage basins and physical habitat attributes for some areas to adequately partition variance in key measures of biological integrity. Results from canonical correspondence analysis indicated that substrate size and habitat type were the primary …
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Hydrogeological and Hydrochemical Characterization of the Matozinhos-Pedro Leopoldo Karst, Brazil
… routes and catchment areas in the two major drainage basins in the area, Samambaia Basin and Palmeiras-Mocambo Basin. Other drainage basins were identified, but not traced due to the absence of related swallets. Fluorescein and optical brightener had a poor performance as tracers under …
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SOME ASPECTS OF THE SURFACE CONFIGURATION OF SINGAPORE ISLAND
… type is more widespread than is thought. The drainage pattern is complex. There are more than 40 drainage basins, the average size being 4.78 square miles and the medium size being 2.46 square miles. The drainage is influenced by the underlying structure and is related to the sequences of the …
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Evolution of topography in glaciated mountain ranges
… have produced only modest relief by enlarging drainage basins at the expense of low-relieftopography. Glaciers have lowered valley floors and ridgelines by similar amounts, limiting the amount of "missing mass" that can be generated, and causing a decrease in drainage basin relief.
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Systematic oversteepening in longitudinal profiles of mixed bedrock-alluvial channels at tributary junctions : Appalachians, Virginia
… channel gradients at tributary junctions. Where drainage area increased, channel slopes were either increasing or remaining constant. Subsequent investigation of 10m resolution digital elevation models found this pattern to be widespread throughout several large nearby drainage basins (A …
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Signatures of land-ocean interactions in coastal morphology
… spatial correlations between major island drainage basins and reef passes, deep channels that dissect the reef flat. Chapter 4 evaluates the relative contributions of surface erosion and geodynamic subsidence to volcanic island morphology through a nondimensional analytical framework and …
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Reconciling Western toad phylogeography with Great Basin prehistory
… among Western toad clades and Great Basin drainages. Toad clades that are distributed over large areas, and are composed of many populations, tend to fall within the confines of regional, riverine drainages. Smaller, more genetically distant clades are generally harbored in small, riverless …
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Taxonomic Revision of the Pirate Perches (Percopsiformes: Aphredoderidae) Reveals Three New Species and Elevates Two Subspecies
… a relatively old though stochastic landscape and drainage basins. Specific and subspecific differentiation within the Southeastern United States occurs over a small geographic area and is well documented, though several species of lowland fishes seemingly defy biogeographic and phylogeographic …
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