Memorandum on the dipole--dipole resistivity results over the East Mesa geothermal anomaly, Imperial Valley, California
Some of the results of a resistivity survey completed over the East Mesa geothermal anomaly in Imperial County, California are presented. The area of the heat flow high correlates quite closely with a gravity high and with a seismic ground noise high. A reconnaissance resistivity survey using the Schlumberger electrode configuration was also completed in the Imperial Valley. These data show that a weak resistivity low exists at the East Mesa, at the contact between very low resistivity sediments to the west and slightly higher resistivity rocks to the east. Dipole-dipole resistivity measurements were made through the center of the heat-flow high using x = 2,000', N = 1,2,3,4,5 along lines about five miles long. The results indicate a distinct resistivity low, at depth, that correlates with the East Mesa geothermal high. The details of the resistivity low can be seen much more clearly in the dipole-dipole data than from the reconnaissance survey. (JGB)
- Research Organization:
- McPhar Geophysics Ltd. (USA)
- OSTI ID:
- 5012386
- Report Number(s):
- NP-22853
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
150301* -- Geothermal Exploration & Exploration Technology-- Geophysical Techniques & Surveys
COMPARATIVE EVALUATIONS
DIPOLES
EAST MESA GEOTHERMAL FIELD
ELECTRIC CONDUCTIVITY
ELECTRICAL PROPERTIES
ELECTRICAL SURVEYS
GEOPHYSICAL SURVEYS
GEOTHERMAL FIELDS
Geothermal Legacy
HEAT FLOW
MULTIPOLES
PHYSICAL PROPERTIES