Earth tides can trigger shallow thrust fault earthquakes
Cochran, E.S.; Vidale, J.E.; Tanaka, S. (2004). Earth tides can trigger shallow thrust fault earthquakes. Science (Wash.) 306(5696): 1-7
In: Science (Washington). American Association for the Advancement of Science: New York, N.Y. ISSN 0036-8075; e-ISSN 1095-9203, more
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| Authors | | Top |
- Cochran, E.S.
- Vidale, J.E.
- Tanaka, S.
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| Abstract |
We show a correlation between the occurrence of shallow, thrust earthquakes and the occurrence of the strongest tides. The rate of earthquakes varies from the background rate by a factor of three with the tidal stress. The highest correlation is found when we assume a coefficient of friction of µ = 0.4 for the crust, although we see good correlation for µ between 0.2 and 0.6. Our results quantify the effect of applied stress on earthquake triggering, a key factor in understanding earthquake nucleation and cascades whereby one earthquake triggers others. |
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