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

Description: 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 problems to the method resulting from inaccurate model parameters and convective heat transport are investigated.
Date: January 1, 1986
Creator: Howell, Jack & Chapman, David S.

Drainage of Irrigated Lands

Description: Report discussing "the drainage of irrigated lands which have been seriously injured or rendered wholly unproductive by the seepage of irrigation water or by the rise of alkali, or by both combined.... This report not only describes the condition of the land, the details of its draining, and the results which were obtained in particular cases, but gives carefully drawn deductions from the experiments, together with directions for draining lands which have become too wet or too alkaline under the ordinary methods of irrigation for profitable cultivation. Methods of draining are not so well established for irrigated land as for land in humid areas, which fact suggests the propriety of describing methods that have been tested in specific cases." -- p. 2
Date: 1909
Creator: Brown, Charles F.

Summary of Preliminary Results of Field Studies in 1952 in the Goose Creek District, Cassia County, Idaho, Boxelder County, Utah, and Elko County, Nevada

Description: From introduction: This report summarizes the results of detailed mapping and sampling completed during 1952 with particular reference to an area of about 60 square miles in T. 16 S. , R. 21 E. , Cassia County, Idaho, and parts of adjacent townships in Idaho, Utah, and Nevada. It supplements an earlier report based on reconnaissance stttdies in the Goose Creek district in 1951 (Hail and Gill, 1953).
Date: 1953?
Creator: Mapel, W. J. & Hail, William James, Jr.

Tungsten Deposits in Utah

Description: Report issued by the U.S. Bureau of Mines discussing tungsten deposits and mining practices in Utah. As stated in the introduction, "this paper describes the tungsten-bearing areas of Utah, inferred reserves, production practices and problems, and many of the mines" (p. 2). This report includes maps, tables, and illustrations.
Date: 1961
Creator: Everett, Floyd D.
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