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Airborne Electromagnetic Mapping of the Base of Aquifer in Areas of Western Nebraska
U.s. Department of the Interior
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Airborne Electromagnetic Mapping of the Base of Aquifer in Areas of Western Nebraska
U.s. Department of the Interior
Airborne geophysical surveys of selected areas of the North and South Platte River valleys of Nebraska, including Lodgepole Creek valley, collected data to map aquifers and bedrock topography and thus improve the understanding of groundwater?surface-water relationships to be used in water-management decisions. Frequency-domain helicopter electromagnetic surveys, using a unique survey flight-line design, collected resistivity data that can be related to lithologic information for refinement of groundwater model inputs. To make the geophysical data useful to multidimensional groundwater models, numerical inversion converted measured data into a depth-dependent subsurface resistivity model. The inverted resistivity model, along with sensitivity analyses and test-hole information, is used to identify hydrogeologic features such as bedrock highs and paleochannels, to improve estimates of groundwater storage. The two- and three-dimensional interpretations provide the groundwater modeler with a high-resolution hydrogeologic framework and a quantitative estimate of framework uncertainty.
Medie | Bøger Paperback Bog (Bog med blødt omslag og limet ryg) |
Udgivet | 23. juli 2014 |
ISBN13 | 9781499641356 |
Forlag | CreateSpace Independent Publishing Platf |
Antal sider | 48 |
Mål | 216 × 279 × 3 mm · 136 g |
Sprog | Engelsk |
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