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by CSMIP Staff
Click on the link below for the full text:
Introduction
Accelerograms of particular interest which were recorded at CSMIP stations
during the earthquake near Petrolia of August 17 are attached. Eleven
accelerograms were recovered at nine stations including two buildings, one
bridge and six freefield stations. The stations are located 11 to 71 km from
the preliminary epicenter of 40.235°N and 124.348°W (UCB). The preliminary
magnitude estimate is 6.0 ML (UCB).
The location of CSMIP stations and the earthquake epicenter are shown on the
attached map. Peak accelerations for all records recovered, the station
coordinates and distance from the epicenter are listed in Table 1.
Accelerograms of particular interest included here are:
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- Petrolia. Closest station at 11 km, 53% g peak acceleration.
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- Cape Mendocino. This station is 2 km more distant from the epicenter but
the peak acceleration of 26% g is about one-half the value at Petrolia.
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- Shelter Cove. Peak acceleration of 24% g at 33 km.
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