Preliminary seismological results
Earthquakes & Volcanoes (USGS)
By: A. Michael, D. Oppenheimer, and P. Reasenberg
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Abstract
On April 25 and April 26, 992, three earthquakes with magnitude (M) equal to or greater than 6.6 occurred near Cape Mendocino, California. the sequence began with a relatively shallow earthquake (M=7.1) on Saturday, April 25, at 11:06 a.m. local time. The two most most powerful aftershocks has magnitudes of 6.6 and 6.7. They occurred at 00:41 a.m. and 4:18 a.m. local times, respectively, on Sunday, April 26. The mainshock had a focal depth of about 10 km and the hypocenters of the strong afterschokcs were about 20 km deep. During the next three weeks, approximately 1500 aftershocks were recorded by the seismographic networks of the U.S Geological Survey. Some 200 of these events had M≥3.0.
Study Area
| Publication type | Article |
|---|---|
| Publication Subtype | Journal Article |
| Title | Preliminary seismological results |
| Series title | Earthquakes & Volcanoes (USGS) |
| Volume | 23 |
| Issue | 3 |
| Year Published | 1992 |
| Language | English |
| Publisher | U.S Geological Survey |
| Description | 6 p. |
| First page | 110 |
| Last page | 115 |
| Country | United States |
| State | California |
| Other Geospatial | Cape Mendocino |
| Online Only (Y/N) | N |
| Additional Online Files (Y/N) | N |
| Google Analytic Metrics | Metrics page |