Simulated effects of climate change on the Death Valley regional ground-water flow system, Nevada and California

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The US Geological Survey, in cooperation with the US Department of Energy, is evaluating the geologic and hydrologic characteristics of the Death Valley regional flow system as part of the Yucca Mountain Project. As part of the hydrologic investigation, regional, three-dimensional conceptual and numerical ground-water-flow models have been developed to assess the potential effects of past and future climates on the regional flow system. A simulation that is based on climatic conditions 21,000 years ago was evaluated by comparing the simulated results to observation of paleodischarge sites. Following acceptable simulation of a past climate, a possible future ground-water-flow system, with ... continued below

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44 p.

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D`Agnese, Frank A.; O`Brien, Grady M.; Faunt, Claudia C. & San Juan, Carma A. April 1, 1999.

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Description

The US Geological Survey, in cooperation with the US Department of Energy, is evaluating the geologic and hydrologic characteristics of the Death Valley regional flow system as part of the Yucca Mountain Project. As part of the hydrologic investigation, regional, three-dimensional conceptual and numerical ground-water-flow models have been developed to assess the potential effects of past and future climates on the regional flow system. A simulation that is based on climatic conditions 21,000 years ago was evaluated by comparing the simulated results to observation of paleodischarge sites. Following acceptable simulation of a past climate, a possible future ground-water-flow system, with climatic conditions that represent a doubling of atmospheric carbon dioxide, was simulated. The steady-state simulations were based on the present-day, steady-state, regional ground-water-flow model. The finite-difference model consisted of 163 rows, 153 columns, and 3 layers and was simulated using MODFLOWP. Climate changes were implemented in the regional ground-water-flow model by changing the distribution of ground-water recharge. Global-scale, average-annual, simulated precipitation for both past- and future-climate conditions developed elsewhere were resampled to the model-grid resolution. A polynomial function that represents the Maxey-Eakin method for estimating recharge from precipitation was used to develop recharge distributions for simulation.

Physical Description

44 p.

Notes

Geological Survey, Information Services, Box 25286, Federal Center, Denver, CO 80225 (United States); OSTI as DE99002359

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  • Other Information: PBD: 1999

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  • Other: DE99002359
  • Report No.: USGS/WRIR--98-4041
  • Grant Number: AI08-97NV12033
  • DOI: 10.2172/335175 | External Link
  • Office of Scientific & Technical Information Report Number: 335175
  • Archival Resource Key: ark:/67531/metadc685330

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Office of Scientific & Technical Information Technical Reports

Reports, articles and other documents harvested from the Office of Scientific and Technical Information.

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Creation Date

  • April 1, 1999

Added to The UNT Digital Library

  • July 25, 2015, 2:20 a.m.

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  • May 18, 2016, 6:08 p.m.

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D`Agnese, Frank A.; O`Brien, Grady M.; Faunt, Claudia C. & San Juan, Carma A. Simulated effects of climate change on the Death Valley regional ground-water flow system, Nevada and California, report, April 1, 1999; Denver, Colorado. (digital.library.unt.edu/ark:/67531/metadc685330/: accessed July 20, 2018), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.