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in subjects: "150301 -- Geothermal Exploration & Exploration Technology-- Geophysical Techniques & Surveys"  
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Thermal Regimes of Major Volcanic Centers: Magnetotelluric Constraints

Description: The interpretation of geophysical/electromagnetic field data has been used to study dynamical processes in the crust beneath three of the major tectono-volcanic features in North America: the Long Valley/Mono Craters Volcanic Complex in eastern California, the Cascades Volcanic Belt in Oregon, and the Rio Grande Rift in the area of Socorro, New Mexico. Primary accomplishments have been in the area of creating and implementing a variety of 2-D generalized inverse computer codes, and the applicat… more
Date: October 2, 1989
Creator: Hermance, J. F.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Imaging algorithms for geophysical applications of impedance tomography

Description: The methods of impedance tomography may be employed to obtain images of subsurface electrical and conductivity variations. For practical reasons, voltages and currents are usually applied at locations on the ground surface or down a limited number of boreholes, but almost never over the entire surface of the region being investigated. The geophysical inversion process can be facilitated by constructing algorithms adopted to these particular geometries and to the lack of complete surface data. I… more
Date: June 2, 1992
Creator: Witten, A. J. & Molyneux, J. E.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

Temperature-profile determination using frequency-domain reflectometry

Description: The temperature distribution along a coaxial electrical cable can be determined by means of frequency-domain reflectometry if the cable has an inner sheath of a suitable temperature-sensitive dielectric material. Such a technique would have advantages in cost and convenience over the conventional method of placing a separate thermocouple at each point where the temperature is to be measured. It would be especially useful for underground applications in assessing geothermal reservoirs and in ins… more
Date: April 2, 1976
Creator: Lytle, R. J. & Myers, G. K.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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