Interpretation of electromagnetic soundings in the Raft River geothermal area, Idaho
Report: Interpretation of electromagnetic soundings in the Raft River geothermal area, Idaho
AbstractAn electromagnetic (EM) controlled source survey was conducted in the Raft River Valley, near Malta, Idaho. The purpose of the survey was: to field test U.S. Geological Survey extra-low-frequency (ELF) equipment using a grounded wire source and receiver loop configuration (which is designed to measure the vertical magnetic field (Hz) at the loop center for various frequencies); to present an example of the EM sounding data and interpretations using a previously developed inversion program; and (3) to compare graphically the EM results with previously reported DC Schlumberger results for a geothermal environment. Five ELF frequency soundings were made using a grounded wire source with a minimum length of 1480 meters and a maximum length of 3057 meters. The maximum frequency range for each sounding was from 1 hertz to 2000 hertz. The least squares EM station results obtained by an inversion program are given in sets of three plots in the appendix--least squares phase solution with residuals, least squares amplitude solution with residuals, and the EM layer solution superimposed over the nearest DC layer solution.
- Anderson and W. L.
- DOE Information Bridge, 1/1/1977
Anderson, W. L. . 1/1/1977. Interpretation of electromagnetic soundings in the Raft River geothermal area, Idaho. (!) : DOE Information Bridge.