Word: paleoseismologist
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Dates: during 1990-1999
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...fault experienced only one earthquake of magnitude 5.8 or higher.* Since then there have been seven, including the Landers quake, which weighed in at an impressive 7.5. Moreover, this surge in seismicity appears to be occurring on a worrisome schedule. Excavations of old lake-bed sediments by Caltech paleoseismologist Kerry Sieh in the mid-1980s indicate that large earthquakes have roared through this section of the San Andreas at not quite 300-year intervals. The last such quake took place circa 1680. "It's just a gut feeling," ventures Sieh, who is 41 years old, "but I think...
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