Sonographs of submarine sediment failure caused by the 1980 earthquake off northern California
Geo-Marine Letters
By: M.E. Field and R. K. Hall
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Abstract
In 1980, a large earthquake caused extensive sediment failure on the shallow continental shelf off the Klamath River in northern California. Side-scan sonography was used to complement detailed geophysical profiling in identifying specific features and resolving modes of failure. The features include a nearly flat failure terrace mantled with sand boils, collapse craters and sediment flows, and bounded on the seaward side by a meandering continuous toe ridge. Seaward of the terrace lies a compression zone delineated by small pressure ridges. Our findings indicate a temporal progression of failure from lique-faction of shallow subsurface sand to lateral spread of intact blocks to sediment collapse and flow. ?? 1982 A. M. Dowden, Inc.
Suggested Citation
Field, M., Hall, R.K., 1982, Sonographs of submarine sediment failure caused by the 1980 earthquake off northern California: Geo-Marine Letters, v. 2, no. 3-4, p. 135-141, https://doi.org/10.1007/BF02462754.
| Publication type | Article |
|---|---|
| Publication Subtype | Journal Article |
| Title | Sonographs of submarine sediment failure caused by the 1980 earthquake off northern California |
| Series title | Geo-Marine Letters |
| DOI | 10.1007/BF02462754 |
| Volume | 2 |
| Issue | 3-4 |
| Year Published | 1982 |
| Language | English |
| Publisher | Springer-Verlag |
| Larger Work Type | Article |
| Larger Work Subtype | Journal Article |
| Larger Work Title | Geo-Marine Letters |
| First page | 135 |
| Last page | 141 |