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MLSM of the 1989 Loma Prieta earthquake
AbstractThe use of regional attenuation in computing the local magnitude, ML, from strong motion data gathered at distances less than 100 km may lead to systematic underestimates approaching 0·5 magnitude units (Trifunac & Herak, Soil Dynamics and Earthquake Engineering, 1992, 18, 229-41). The use of the attenuation law Att(Δ), for example, with synthetic estimates of Wood-Anderson seismometer response, during the Loma Preita earthquake, leads to estimates of ML which agree with the surface wave and moment magnitudes, and which are essentially distance-independent.
MLSM of the 1989 Loma Prieta earthquake
AbstractThe use of regional attenuation in computing the local magnitude, ML, from strong motion data gathered at distances less than 100 km may lead to systematic underestimates approaching 0·5 magnitude units (Trifunac & Herak, Soil Dynamics and Earthquake Engineering, 1992, 18, 229-41). The use of the attenuation law Att(Δ), for example, with synthetic estimates of Wood-Anderson seismometer response, during the Loma Preita earthquake, leads to estimates of ML which agree with the surface wave and moment magnitudes, and which are essentially distance-independent.
MLSM of the 1989 Loma Prieta earthquake
Trifunac, M.D. (author)
Soil Dynamics and Earthquake Engineering ; 13 ; 313-316
1994-03-08
4 pages
Article (Journal)
Electronic Resource
English
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Report on Loma Prieta Earthquake (October 17, 1989)
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Reflections on the October 17, 1989 Loma Prieta earthquake
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