Bulletin of the Seismological Society of America; December 1974; v. 64; no. 6;
p. 1909-1918
© 1974 Seismological Society of America
First strong-motion instrumentation in Hawaii: With results from the earthquake of April 26, 1973
W. M. ADAMS
UNIVERSITY OF HAWAII, HONOLULU, HAWAII 96822
Abstract
On April 26, 1973, an earthquake with magnitude of
occurred at a depth of 40 km below Honomu (north of Hilo). Serendipitously, in the preceding February, one SMA-1 accelerograph and one Wilmot seismoscope were installed near Waikiki on the island of Oahu. Also, one SMA-1 accelerograph and three Wilmot seismoscopes were installed on the island of Hawaii. The records from these instruments provided the first strong-motion data for the State of Hawaii. The motion was dominantly horizontal. This finding explains the extensive damage to the Hilo area, reported to be about 6 million dollars.
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