Development of a quasi three-dimensional groundwater model for a portion of the Nevada Test Site. [THESIS, in FORTRAN for CDC 6400]

Technical Report · Mon Jan 01 04:00:00 EST 1979

OSTI ID:6272594

Oberlander, P L

Groundwater systems are often modeled on computers by use of a finite difference method in two dimensions, height and length. These models do not account for water movement in the lateral extent normal to the model. An empirical correction matrix was devised that will partially adjust a two-dimensional model for flow in the third dimension. In an isotropic and homogeneous medium, the correction matrix averages a 4.9% difference in potential values. The correction matrix was applied to the groundwater system from Pahute Mesa to Yucca Flat on the Nevada Test Site, a distance of 24 kilomeers. The geology of the area is complex and contains folded and thrust-faulted Paleozoic through Tertiary rocks. Groundwater is recharged at Pahute Mesa and flows to Yucca Flat at the rate of 64.8 acre feet/year. The maximum water flow under all of Yucca Flat and into the Ash Meadows groundwter system is 1240 acre feet/year. 12 figures, 7 tables.

• Research Organization: Nevada Univ., Reno (USA). Desert Research Inst.
• DOE Contract Number: EY-76-C-08-1253
• OSTI ID: 6272594
• Report Number(s): NVO-1253-14
• Country of Publication: United States
• Language: English

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54 ENVIRONMENTAL SCIENCES
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CDC COMPUTERS
COMPUTER CODES
COMPUTERS
CONTAMINATION
CONTINUITY EQUATIONS
DARCY LAW
DIFFERENTIAL EQUATIONS
EQUATIONS
FINITE DIFFERENCE METHOD
FORTRAN
GEOLOGY
GROUND WATER
HYDROGEN COMPOUNDS
HYDROLOGY
ITERATIVE METHODS
MATHEMATICAL MODELS
MINERALOGY
NEVADA TEST SITE
NUMERICAL SOLUTION
OXYGEN COMPOUNDS
PROGRAMMING LANGUAGES
STRATIGRAPHY
T CODES
THREE-DIMENSIONAL CALCULATIONS
WATER