Please use this identifier to cite or link to this item:
http://hdl.handle.net/2122/1905
DC Field | Value | Language |
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dc.contributor.authorall | Spudich, P.; U.S. Geological Survey, Menlo Park, CA, U.S.A. | en |
dc.contributor.authorall | Steck, L. K.; Los Alamos National Laboratory, Los Alamos, NM, U.S.A. | en |
dc.contributor.authorall | Hellweg, M.; U.S. Geological Survey, Menlo Park, CA, U.S.A. | en |
dc.contributor.authorall | Fletcher, J. B.; U.S. Geological Survey, Menlo Park, CA, U.S.A. | en |
dc.contributor.authorall | Baker, L. M.; U.S. Geological Survey, Menlo Park, CA, U.S.A. | en |
dc.date.accessioned | 2006-12-06T11:23:21Z | en |
dc.date.available | 2006-12-06T11:23:21Z | en |
dc.date.issued | 1994-12 | en |
dc.identifier.uri | http://hdl.handle.net/2122/1905 | en |
dc.description.abstract | he M 7.4 Landers earthquake triggered widespread seismicity in the Western U.S. Because the transient dynamic stresses induced at regional distances by the Landers surface waves are much larger than the expected static stresses, the magnitude and the characteristics of the dynamic stresses may bear upon the earthquake triggering mechanism. The Landers earthquake was recorded on the UPSAR array, a group of 14 triaxial accelerometers located within a 1-square-km region 10 km southwest of the town of Parkfield, California, 412 km northwest of the Landers epicenter. We used a standard geodetic inversion procedure to determine the surface strain and stress tensors as functions of time from the observed dynamic displacements. Peak dynamic strains and stresses at the Earth's surface are about 7 microstrain and 0.035 MPa, respectively, and they have a flat amplitude spectrum between 2 s and 15 s period. These stresses agree well with stresses predicted from a simple rule of thumb based upon the ground velocity spectrum observed at a single station. Peak stresses ranged from about 0.035 MPa at the surface to about 0.12 MPa between 2 and 14 km depth, with the sharp increase of stress away from the surface resulting from the rapid increase of rigidity with depth and from the influence of surface wave mode shapes. Comparison of Landers-induced static and dynamic stresses at the hypocenter of the Big Bear aftershock provides a clear example that faults are stronger on time scales of tens of seconds than on time scales of hours or longer. | en |
dc.format.extent | 4977205 bytes | en |
dc.format.mimetype | application/pdf | en |
dc.language.iso | English | en |
dc.relation.ispartofseries | 6/37 (1994) | en |
dc.subject | stress | en |
dc.subject | surface waves | en |
dc.subject | Parkfield | en |
dc.subject | Landers earthquake | en |
dc.title | Transient stresses al Parkfield, California, produced by the M 7.4 Landers earthquake of June 28, 1992: implications for the time-dependence of fault friction | en |
dc.type | article | en |
dc.type.QualityControl | Peer-reviewed | en |
dc.subject.INGV | 04. Solid Earth::04.06. Seismology::04.06.99. General or miscellaneous | en |
dc.description.journalType | JCR Journal | en |
dc.description.fulltext | open | en |
dc.contributor.author | Spudich, P. | en |
dc.contributor.author | Steck, L. K. | en |
dc.contributor.author | Hellweg, M. | en |
dc.contributor.author | Fletcher, J. B. | en |
dc.contributor.author | Baker, L. M. | en |
dc.contributor.department | U.S. Geological Survey, Menlo Park, CA, U.S.A. | en |
dc.contributor.department | Los Alamos National Laboratory, Los Alamos, NM, U.S.A. | en |
dc.contributor.department | U.S. Geological Survey, Menlo Park, CA, U.S.A. | en |
dc.contributor.department | U.S. Geological Survey, Menlo Park, CA, U.S.A. | en |
dc.contributor.department | U.S. Geological Survey, Menlo Park, CA, U.S.A. | en |
item.openairetype | article | - |
item.cerifentitytype | Publications | - |
item.languageiso639-1 | en | - |
item.grantfulltext | open | - |
item.openairecristype | http://purl.org/coar/resource_type/c_18cf | - |
item.fulltext | With Fulltext | - |
crisitem.author.dept | USGS, Menlo Park, CA, USA | - |
crisitem.author.dept | Los Alamos National Laboratory, Los Alamos, NM, U.S.A. | - |
crisitem.author.dept | University of California, Berkeley Seismological Laboratory, Berkeley, USA | - |
crisitem.author.dept | U.S. Geological Survey, Menlo Park, CA, U.S.A. | - |
crisitem.author.dept | U.S. Geological Survey, Menlo Park, CA, U.S.A. | - |
crisitem.classification.parent | 04. Solid Earth | - |
Appears in Collections: | Annals of Geophysics |
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File | Description | Size | Format | |
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25 spudich.pdf | 4.86 MB | Adobe PDF | View/Open |
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