Processed CSMIP Strong-Motion Data from the Cape Mendocino/Petrolia Earthquake of April 25, 1992: Release No. 1

OSMS 92-12

by R. Darragh, T. Cao, C. Cramer, M. Huang and A. Shakal

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​Processed CSMIP Strong-Motion Data from the Cape Mendocino/Petrolia Earthquake of April 25, 1992: Release No. 1 (Adobe PDF (SIZE 1.6 MB)) - Requires Adobe Acrob​at Reader or other PDF viewer.

Introduction

The strong-motion records recovered from 14 stations after the Cape Mendocino/Petrolia earthquakes of April 25 and 26, 1992 are presented in Shakal and others (1992). This report presents the digitized and processed data from 6 stations that recorded the M_w 7.0 (M_s 7.1) mainshock on April 25. This earthquake produced some of the highest accelerations ever recorded. The ground response station at Cape Mendocino station recorded a peak acceleration near 2 g. This is the largest acceleration ever recorded in California. Also, some of the highest accelerations ever recorded on a structure, 1.23 g and 1.38 g, occurred on the deck and on the ground near the west abutment of the Rio Dell freeway overpass, respectively.