Telluric sounding and mapping in the vicinity of the Salton Sea Geothermal Area, Imperial Valley, California. Master's thesis

Technical Report · Thu Jun 01 04:00:00 EDT 1978

OSTI ID:5477307

Humphreys, E D

A telluric survey was conducted in the vicinity of the North Brawley and Salton Sea Geothermal Fields south of California's Salton Sea. The telluric signals were recorded at forty-two stations over a broad range of frequencies and analyzed with cascaded R C digital filters at nine nominal periods ranging from 40 seconds to 1667 seconds. At each nominal period the transformation coefficients relating the telluric signal between the base and roving stations were determined by the least-squares method. The reduced data are presented as J contour maps and polarization ellipse maps at each of the periods analyzed, and as J vs. period graphs for each station. The longitudinal resistivity value of the sedimentary sequence and its underlying seismic basement was determined for each station with reference to a surface D.C. resistivity survey and the seismically determined depth to the basement.

• Research Organization: California Univ., Riverside (USA). Inst. of Geophysics and Planetary Physics
• OSTI ID: 5477307
• Report Number(s): PB-296081
• Country of Publication: United States
• Language: English

Related Subjects

15 GEOTHERMAL ENERGY
150301* -- Geothermal Exploration & Exploration Technology-- Geophysical Techniques & Surveys
CALIFORNIA
ELECTRICAL SURVEYS
EXPLORATION
GEOPHYSICAL SURVEYS
GEOTHERMAL EXPLORATION
GEOTHERMAL FIELDS
IMPERIAL VALLEY
MAPPING
MAPS
NORTH AMERICA
SALTON SEA GEOTHERMAL FIELD
SURVEYS
TELLURIC SURVEYS
USA
WESTERN REGION