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The local magnitude of the 18 October 1989 Santa Cruz Mountains Earthquake is M L =6.9
Author(s) -
McNally K. C.,
Yellin J.,
ProttiQuesada M.,
Simila G.,
Malavassi E.,
Shillinger W.,
Terdiman R.,
Zhang Z.
Publication year - 1990
Publication title -
geophysical research letters
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 2.007
H-Index - 273
eISSN - 1944-8007
pISSN - 0094-8276
DOI - 10.1029/gl017i010p01781
Subject(s) - magnitude (astronomy) , moment magnitude scale , geology , seismology , earthquake magnitude , maximum magnitude , richter magnitude scale , geodesy , physics , seismic hazard , geometry , mathematics , astrophysics , scaling
We find that the local magnitude, M L , of the 18 October 1989 (U.T.) earthquake is 6.9, not 7.0 ‐ 7.1 as has tea reported. This value agrees with the moment magnitude, M w = 6.9, found by Kanamori and Satake (1990).