Laboratory-measured and Property-transfer Modeled Saturated Hydraulic Conductivity of Snake River Plain Aquifer Sediments at the Idaho National Laboratory, Idaho PDF Download
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Author: Kim S. Perkins
Publisher:
ISBN:
Category : Sediments (Geology)
Languages : en
Pages : 14
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Author: Kim S. Perkins
Publisher:
ISBN:
Category : Sediments (Geology)
Languages : en
Pages : 14
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Author: Kim S. Perkins
Publisher:
ISBN:
Category : Hydrology
Languages : en
Pages : 0
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Author:
Publisher:
ISBN:
Category :
Languages : en
Pages :
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The effective hydraulic conductivity of basalt and interbedded sediment that compose the Snake River Plain aquifer at and near the Idaho National Engineering and Environmental Laboratory (INEEL) ranges from about 1.0x10 -2 to 3.2x10 4 feet per day (ft/d). This six-order-of-magnitude range of hydraulic conductivity was estimated from single-well aquifer tests in 114 wells, and is attributed mainly to the physical characteristics and distribution of basalt flows and dikes. Hydraulic conductivity is greatest in thin pahoehoe flows and near-vent volcanic deposits. Hydraulic conductivity is least in flows and deposits cut by dikes. Estimates of hydraulic conductivity at and near the INEEL are similar to those measured in similar volcanic settings in Hawaii. The largest variety of rock types and the greatest range of hydraulic conductivity are in volcanic rift zones, which are characterized by numerous aligned volcanic vents and fissures related to underlying dikes. Three broad categories of hydraulic conductivity corresponding to six general types of geologic controls can be inferred from the distribution of wells and vent corridors. Hydraulic conductivity of basalt flows probably is increased by localized fissures and coarse mixtures of interbedded sediment, scoria, and basalt rubble. Hydraulic conductivity of basalt flows is decreased locally by abundant alteration minerals of probable hydrothermal origin. Hydraulic conductivity varies as much as six orders of magnitude in a single vent corridor and varies from three to five orders of magnitude within distances of 500 to 1,000 feet. Abrupt changes in hydraulic conductivity over short distances suggest the presence of preferential pathways and local barriers that may greatly affect the movement of ground water and the dispersion of radioactive and chemical wastes downgradient from points of waste disposal.
Author: Sharon E. Kroening
Publisher:
ISBN:
Category : Earth sciences
Languages : en
Pages : 122
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Author: Stephanie Shakofsky
Publisher:
ISBN:
Category : Soil moisture
Languages : en
Pages : 44
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Author: Daniel J. Ackerman
Publisher: CreateSpace
ISBN: 9781500178086
Category : Science
Languages : en
Pages : 232
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Three-dimensional steady-state and transient models of groundwater flow and advective transport in the eastern Snake River Plain aquifer were developed by the U.S. Geological Survey in cooperation with the U.S. Department of Energy. The steady-state and transient flow models cover an area of 1,940 square miles that includes most of the 890 square miles of the Idaho National Laboratory (INL). A 50-year history of waste disposal at the INL has resulted in measurable concentrations of waste contaminants in the eastern Snake River Plain aquifer. Model results can be used in numerical simulations to evaluate the movement of contaminants in the aquifer.
Author: Kim S. Perkins
Publisher:
ISBN:
Category : Groundwater flow
Languages : en
Pages : 15
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Author:
Publisher:
ISBN:
Category : Groundwater
Languages : en
Pages : 0
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Author: D. J. Ackerman
Publisher:
ISBN:
Category : Groundwater flow
Languages : en
Pages : 220
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Author: Bill Bonnichsen
Publisher: Idaho Geological Survey
ISBN:
Category : Geology, Structural
Languages : en
Pages : 508
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