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Lou et al. 1997

Lou, M., Shalev, E. and Malin, P.E. (1997). Shear-wave splitting and fracture alignments at the Northwest Geysers, California. Geophysical Research Letters 24: doi: 10.1029/97GL01845. issn: 0094-8276.

Shear-wave splitting is commonly observed on three-component microearthquake seismograms recorded at the Northwest Geysers geothermal field, California. The polarization of leading shear waves around each recording station is predominantly N10¿--40 ¿E, suggesting that the shear-wave splitting is caused mainly by pervasive, north-northeast orientated anisotropy. Time delays between the leading and second shear waves can be as large as 10 ms/km to 30 ms/km. We propose that the direction and magnitude of this shear wave splitting is due to the presence of pervasive, stress-aligned secondary fractures related to several northwest-trending, right-lateral faults in the Geysers area.¿ 1997 American Geophysical Union

BACKGROUND DATA FILES

	Abstract

Keywords
Seismology, Continental crust, Seismology, General or miscellaneous, Exploration Geophysics, Seismic methods

Journal
Geophysical Research Letters
http://www.agu.org/journals/gl/

Publisher
American Geophysical Union
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