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Abstract
The Klamath Falls earthquakes on September 20, 1993, were the largest earthquakes centered in Oregon in more than 50 yrs. Only the magnitude 5.75 Milton-Freewater earthquake in 1936, which was centered near the Oregon-Washington border and felt in an area of about 190,000 sq km, compares in size with the recent Klamath Falls earthquakes. Although the 1993 earthquakes surprised many local residents, geologists have long recognized that strong earthquakes may occur along potentially active faults that pass through the Klamath Falls area. These faults are geologically related to similar faults in Oregon, Idaho, and Nevada that occasionally spawn strong earthquakes.
In this article we present preliminary results of a close-in, instrumental study of the Klamath Falls earthquake sequence, carried as a cooperative effort by scientists from the U.S Geological Survey (USGS) and universities in Washington, Orgeon, and California. In addition to obtaining much mroe accurate earthquake locations, this study has improved our understanding of the relationship between seismicity and mapped faults in the region.
Study Area
| Publication type | Article |
|---|---|
| Publication Subtype | Journal Article |
| Title | Precisely locating the Klamath Falls, Oregon, earthquakes |
| Series title | Earthquakes & Volcanoes (USGS) |
| Volume | 24 |
| Issue | 3 |
| Year Published | 1993 |
| Language | English |
| Publisher | U.S Geological Survey |
| Description | 11 p. |
| First page | 129 |
| Last page | 139 |
| 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 |