Surface displacements in the 1906 San Francisco and 1989 Loma Prieta Earthquakes

Journal Article · Thu Nov 29 23:00:00 EST 1990 · Science (Washington, D.C.); (United States)

DOI:https://doi.org/10.1126/science.250.4985.1241· OSTI ID:5013969

Segall, P ^[1]; Lisowski, M ^[2]

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1. Stanford Univ., CA (United States) Geological Survey, Menlo Park, CA (United States)
2. Geological Survey, Menlo Park, CA (United States)

The horizontal displacements accompanying the 1906 San Francisco earthquake and the 1989 Loma Prieta earthquake are computed from geodetic survey measurements. The 1906 earthquake displacement field is entirely consistent with right-lateral strike slip on the San Andreas fault. In contrast, the 1989 Loma Prieta earthquake exhibited subequal components of strike slip and reverse faulting. This result, together with other seismic and geologic data, may indicate that the two earthquakes occurred on two different fault planes.

• OSTI ID: 5013969
• Journal Information: Science (Washington, D.C.); (United States), Journal Name: Science (Washington, D.C.); (United States) Vol. 250:4985; ISSN SCIEA; ISSN 0036-8075
• Country of Publication: United States
• Language: English

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