  Anchorage Adak  | |
| UTC time | 2014-06-23 20:53:09 |
|---|---|
| ISC event | 604760173 |
| USGS-ANSS | ComCat |
| Local date | 23 June 2014 (2014-06-23) |
| Local time | 11:53 (HDT) (UTC-9) |
| Magnitude | 7.9Mw[1] |
| Depth | 107.5 kilometers (66.8 mi) |
| Epicenter | 51°50′56″N178°44′06″E / 51.849°N 178.735°E /51.849; 178.735 |
| Type | Oblique-slip |
| Areas affected | Alaska, United States |
| Max. intensity | MMI VIII (Severe)[1] |
| Tsunami | 17 cm (0.56 ft) |
| Aftershocks | 6.0Mw June 23 at 21:11 UTC[2] |
The2014 Aleutian Islands earthquake occurred on 23 June at 11:53HDT (UTC-9) with amoment magnitude of 7.9 and a maximumMercalli intensity of VIII (Severe). The shock occurred in theAleutian Islands – part of the US state ofAlaska – 19 miles (31 km) southeast ofLittle Sitkin Island.
The earthquake was initially reported as 8.0Mw before it was downgraded to 7.9.[3] 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,[4] but was soon downgraded to a tsunami advisory for much of the Aleutian Islands;[5] however, thehypocenter was too deep to generate a tsunami that would affect thePacific basin.[6] A small non-destructive tsunami was generated, with heights of 17 cm onAmchitka.[7][8]
Sources