1975 Near Islands earthquake

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]

1975 Near Islands earthquake
1975 Near Islands earthquake is located in Alaska
1975 Near Islands earthquake
UTC time1975-02-02 08:43:42
ISC event731901
Local dateFebruary 1, 1975 (1975-02-01)
Local time22:43:42
Magnitude7.6 Ms
Depth10 km (6.2 mi)
Epicenter53°07′N 173°30′E / 53.11°N 173.50°E / 53.11; 173.50Coordinates: 53°07′N 173°30′E / 53.11°N 173.50°E / 53.11; 173.50
Areas affectedUnited States (Alaska)
Max. intensityIX (Violent)
Casualties15 injured

See alsoEdit


  1. ^ "Historical Earthquakes: Near Islands". U.S. Geological Survey. Retrieved 1 November 2015.
  2. ^ Simon, R.B.; Stover, C.W.; Person, W.J. (1977). Earthquakes in the United States, January–March 1975. U.S. Geological Survey. p. 17.
  3. ^ "Quake Hits Aleutians" (PDF). The New York Times. February 3, 1975. p. 15.

External linksEdit