Detailed microearthquake survey of Long Valley, California, known geothermal resource area, July-September 1981. Final technical report, 30 September 1980-31 June 1983

Technical Report · Fri Jul 01 00:00:00 EDT 1983

DOI:https://doi.org/10.2172/5954627· OSTI ID:5954627

Cramer, C H; Stierman, D J; Lee, T C

This report presents the results of a detailed microearthquake survey of the geothermal area at Long Valley, California. High quality digital data from a dense 3-component array covering a three-month period during the summer of 1981 have been processed for locations, velocity structure, magnitudes, focal mechanisms, and source parameters. Hypocenter locations determined from this array have estimated errors of 0.5 km in epicenter and 1.0 km in depth relative to one another. Detailed hypocentral locations show two complex zones of seismicity beneath the south moat of the caldera which seems associated with the major hot spring activity within the caldera and could be part of the conduit system feeding hydrothermal waters to these hot springs. Seismic activity at Long Valley appears to be influenced by both regional tectonic stresses and local volcanotectonic activity.

• Research Organization: California State Dept. of Conservation, Sacramento (USA). Div. of Mines and Geology; California Univ., Riverside (USA). Dept. of Earth Sciences
• DOE Contract Number: FC07-80ID12144
• OSTI ID: 5954627
• Report Number(s): DOE/ID/12144-T1; ON: DE85006205
• Resource Relation: Other Information: Portions are illegible in microfiche products. Original copy available until stock is exhausted. Includes 3 sheets of 48x reduction microfiche. Open-File Report 84-53 SAC
• Country of Publication: United States
• Language: English

Related Subjects

15 GEOTHERMAL ENERGY
LONG VALLEY
MICROEARTHQUAKES
SEISMICITY
CALDERAS
CALIFORNIA
HOT SPRINGS
KGRA
POISSON RATIO
TECTONICS
THERMAL WATERS
EARTHQUAKES
FEDERAL REGION IX
MECHANICAL PROPERTIES
NORTH AMERICA
SEISMIC EVENTS
THERMAL SPRINGS
USA
WATER SPRINGS
Geothermal Legacy
150201* - Geology & Hydrology of Geothermal Systems- USA- (-1989)