1957 Andreanof Islands earthquake
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1957 Andreanof Islands earthquake
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| Date | 9 March 1957 14:22(UTC) |
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| Magnitude | 8.6 Mw |
| Epicenter | 51°30′N 175°42′W / 51.5°N 175.7°W |
| Countries or regions | USA, Aleutian Islands & Hawaii |
| Tsunami | Yes |
| Casualties | 0 |
The 1957 Andreanof Islands earthquake was a magnitude 8.6 MW[1] (8.3 Ms[2]) megathrust earthquake that took place on March 9, 1957.[2] It was centered at 51°30′N 175°42′W / 51.5°N 175.7°W in the Alaska-Aleutian megathrust, south of the Andreanof Islands group of the Aleutian Islands in the U.S. state of Alaska.
The earthquake caused damage to infrastructure on Adak Island and Umnak Island, as well as causing an eruption of long-dormant volcano Mount Vsevidof. It also caused a tsunami that reached a height of 16 meters (52 ft) and caused around $5,000,000 in damage[2] in Hawaii, destroying two villages on Oahu, and two bridges in the Aleutian region. No lives were lost in either the earthquake or the tsunami.
As of 2009[update] it remains the fourth largest-magnitude quake in the United States.[3]
See also
References
- ^ Tsunamis - General
- ^ a b c "United States Tsunamis, 1690 - 1988". National Oceanic and Atmospheric Administration. August, 1989. http://www.ngdc.noaa.gov/hazard/data/publications/pub41-2.pdf. Retrieved March 5, 2009.
- ^ Largest Earthquakes in the United States
External links
- USGS Earthquake Hazards Program - Andreanof Islands, Alaska, Magnitude 8.6
- Tsunami! - 1957 Aleutian tsunami
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