The 1975 Near Islands earthquake occurred at 08:43 UTC on February 2 off the coast of Attu Island, Alaska. The earthquake had a surface-wave magnitude of 7.6 and a maximum Mercalli intensity of IX (Violent). It caused heavy damage on Shemya Island, injuring 15 residents. The runways of Shemya Air Force Base sustained cracks up to 16 inches (41 cm) wide, and crevices with as much as 54 feet (16.6 m) of displacement were observed on the island.[1][2][3]
  | |
| UTC time | 1975-02-02 08:43:42 |
|---|---|
| ISC event | 731901 |
| USGS-ANSS | ComCat |
| Local date | February 1, 1975 |
| Local time | 22:43:42 |
| Magnitude | 7.6 Ms |
| Depth | 10 km (6.2 mi) |
| Epicenter | 53°07′N 173°30′E / 53.11°N 173.50°E |
| Areas affected | United States (Alaska) |
| Max. intensity | MMI IX (Violent) |
| Casualties | 15 injured |
See also
editReferences
edit- ^ "Historical Earthquakes: Near Islands". United States Geological Survey. Retrieved 1 November 2015.
- ^ Simon, R.B.; Stover, C.W.; Person, W.J. (1977). Earthquakes in the United States, January–March 1975. United States Geological Survey. p. 17.
- ^ "Quake Hits Aleutians" (PDF). The New York Times. February 3, 1975. p. 15.
External links
edit- The International Seismological Centre has a bibliography and/or authoritative data for this event.
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