For years before the 1989 Loma Prieta earthquake south of San Francisco,earthquake seismologists had been concerned about the possibility of a significant earthquake on the San Andreas Fault in that particular area.Other than the fact that it was on the San Andreas Fault,an area that has seen earthquakes in historic time,what lead them to that conclusion?

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The Answer of For years before the 1989 Loma Prieta earthquake south of San Francisco,earthquake seismologists had been concerned about the possibility of a significant earthquake on the San Andreas Fault in that particular area.Other than the fact that it was on the San Andreas Fault,an area that has seen earthquakes in historic time,what lead them to that conclusion?

For Years Before the 1989 Loma Prieta Earthquake South of San