2014 Aleutian Islands earthquake
 Anchorage
Adak
 |
|
| Date | 23 June 2014 |
|---|---|
| Origin time | 20:53:09 (UTC) |
| Magnitude | 7.9 Mw |
| Depth | 107.5 kilometers (66.8 mi) |
| Epicenter | 51°48′N 178°46′W / 51.80°N 178.76°WCoordinates: 51°48′N 178°46′W / 51.80°N 178.76°W |
| Type | Oblique-slip |
| Areas affected | Alaska, United States |
| Max. intensity | VI (Strong) at Adak |
| Tsunami | Yes |
| Aftershocks | 6.0 Mw June 23 at 21:11 UTC |
The 2014 Aleutian Islands earthquake occurred on 23 June at 11:53 HADT (UTC-9) with a moment magnitude of 7.9 and a maximum Mercalli intensity of VI (Strong). The shock occurred in the Aleutian Islands – part of the US state of Alaska – 19 miles (31 km) southeast of Little Sitkin Island.
The rupture was on a normal fault, at ~107 km depth. Based on the geometry of the slab, and the relative movement of the tectonic plates, the slip vector is likely to have been oblique down-dip towards the ESE. The fault plane appears to be oblique, striking NW-SE and cutting steeply into the subducting slab.
A tsunami warning was issued, but was soon downgraded to a tsunami advisory for much of the Aleutian Islands; however, the hypocenter was too deep to generate a tsunami that would affect the Pacific basin. A small non-destructive tsunami was generated.
Sources
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Wikipedia