Seismic slip, segmentation, and the Loma Prieta earthquake
- Geological Survey, Menlo Park, CA (USA)
The authors have plotted the cumulative seismic slip projected onto a vertical plane for earthquakes occurring during the last 20 years along 210 km of the San Andreas fault that includes the section that moved in the Loma Prieta earthquake. These plots illustrate the differences in depth and character of the seismicity between the locked and creeping portions of the fault or fault zone and define the segment upon which the Loma Prieta earthquake occurred. Working by analogy from the relation between pre-main shock microseismicity and presumed main shock slip regions at Parkfield and Loma Prieta, they identify a segment on the San Francisco Peninsula where they believe the M 7 1838 earthquake occurred, and which they believe may have accumulated sufficient strain that rupture should be expected in the coming decades.
- OSTI ID:
- 6147755
- Journal Information:
- Geophysical Research Letters (American Geophysical Union); (USA), Journal Name: Geophysical Research Letters (American Geophysical Union); (USA) Vol. 17:9; ISSN GPRLA; ISSN 0094-8276
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
580000* -- Geosciences
CALIFORNIA
DATA ANALYSIS
DEPTH
DIMENSIONS
EARTHQUAKES
FEDERAL REGION IX
FORECASTING
GEOLOGIC FAULTS
GEOLOGIC FRACTURES
GEOLOGIC STRUCTURES
HISTORICAL ASPECTS
MECHANICS
NORTH AMERICA
ROCK MECHANICS
SEISMIC EFFECTS
SEISMIC EVENTS
SEISMICITY
SLIP
STRAINS
STRESS ANALYSIS
USA