Landslides caused by the Klamath Falls, Oregon, earthquakes of September 20, 1993
Links
- The Publications Warehouse does not have links to digital versions of this publication at this time
- Download citation as: RIS | Dublin Core
Abstract
The Klamath Falls earthquakes caused landslides throughout an area of about 420 sq km and as far as about 29 km from the epicenter, a distribution that is typical for magnitude 6 earthquakes (see graphs on following pages). Most of the landslides were rock falls or shallow, highly disrupted rock slides from roadcuts, quarries, and steep bluff faces. Such landslides are also among the most common types caused by other earthquakes of comparable magnitude.
In the Klamath Falls area, the most numerous earthquake-induced rock falls were along the east-to southeast-facing flank of a ridge immediately south and west of Howard Bay (locality 1 on the accompanying map), 18 km east-southeast of the epicenter of the magntiude 6.0 shock at 10:45 p.m. This ridge is more than 240 m high and has slopes steeper than 45° in places. The upper part of the ridge is composed of material from basaltic lava flows, an the lower slopes are covered with colluvium and talus deposits containing abundant boulders.
Study Area
| Publication type | Article |
|---|---|
| Publication Subtype | Journal Article |
| Title | Landslides caused by the Klamath Falls, Oregon, earthquakes of September 20, 1993 |
| Series title | Earthquakes & Volcanoes (USGS) |
| Volume | 24 |
| Issue | 3 |
| Year Published | 1993 |
| Language | English |
| Publisher | U.S Geological Survey |
| Description | 7 p. |
| First page | 140 |
| Last page | 146 |
| Country | United States |
| State | Oregon |
| Other Geospatial | Klamath Falls |
| Online Only (Y/N) | N |
| Additional Online Files (Y/N) | N |
| Google Analytic Metrics | Metrics page |