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| Southern California Earthquakes | ||||||
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| Chronological Earthquake Index > | ||||||
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Pasadena Earthquake | ||||
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TIME December 3, 1988 / 3:38 am PST LOCATION 34° 8.47' N, 118° 7.96' W Directly below the city of Pasadena. MAGNITUDE ML5.0 TYPE OF FAULTING left-lateral strike-slip, with very minor reverse motion FAULT INVOLVED Raymond fault DEPTH 15.6 km
Apart from its effects on local residents, this quake was notable for
a few seismological details. First, it was followed by an unusually
small number of aftershocks for a quake of its magnitude, the largest
of which was hardly noticable -- only a magnitude 2.4 (unless the
Montebello earthquake is considered an
aftershock of this event). Second, it
served to bring the debate over the sense of motion of the
Raymond fault closer to an end, by providing
a clear example of left-lateral movement most likely located along
that fault.
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