2 Matching Results

Results open in a new window/tab.

Analysis of temperature-time data from 3 m drillholes at Crystal Hot Springs, Utah (open access)

Analysis of temperature-time data from 3 m drillholes at Crystal Hot Springs, Utah

A method for determining the background geothermal gradient values through the analysis of temperature measurements at multiple depths to 3 m and recorded over a time span of several days is presented. The analysis is based on the amplitude decay and phase shift of temperature waves with depth. Diurnal and other high frequency temperature variations are used to compute thermal diffusivities which in turn are used to model and remove the effect of the annual temperature wave. The analysis considers both a homogeneous half space and a two layer medium consisting of an overburden of finite thickness overlying a semi-infinite substratum. The method was tested in three holes in the Crystal Hot Springs geothermal field. Temperatures in each hole were recorded once a minute over a period of three days with a probe containing thermistors at eight different depths. Five of the thermistors were positioned at shallow depths (less than or equal to 0.5 m) to monitor diurnal and other high frequency waves and three at greater depths (greater than or equal to 1 m) to measure lower frequency variations. Since measurements were recorded at only three sites, the accuracy and reliability of the method is not fully evaluated. Potential …
Date: January 1, 1986
Creator: Howell, Jack & Chapman, David S.
System: The UNT Digital Library
Mineral Resources of the White Rock Range Wilderness Study Area, Lincoln County, Nevada, and Beaver and Iron Counties, Utah (open access)

Mineral Resources of the White Rock Range Wilderness Study Area, Lincoln County, Nevada, and Beaver and Iron Counties, Utah

From summary: The White Rock Range Wilderness Study Area (NV-040-202/UT-040-216) is in Lincoln County, Nevada, and Beaver and Iron Counties, Utah, along the southern Nevada-Utah state line. Ursine, the town nearest to the study area, is about 15 mi (miles) southwest of the study area; the larger town of Pioche is about 30 mi southwest of the study area on Nevada Highway 322. A joint mineral resource appraisal of the 23,625 acre wilderness study area was completed in the summers of 1984 and 1985 by the U.S. Geological Survey and U.S. Bureau of Mines. The White Rock Range Wilderness Study Area has no identified mineral resources and has low mineral resource potential for metals; the potential for oil and gas, coal, and geothermal energy is also low.
Date: 1986
Creator: Toth, Margo I.; Stoneman, Rebecca G.; Blank, H. Richard, Jr. & Gese, Diann D.
System: The UNT Digital Library