|depth = {{convert|107.5|km|mi|sp=us}}
|location = {{Coord|51.80|-178.76|display=inline,title}}
|type = Oblique-slip
|aftershocks = 6.0 Mw June 23 at 21:11 UTC [3]
|countries affected = Alaska, United States
|tsunami = Yes
|casualties =
}}The 2014 Aleutian Islands earthquake occurred on 23 June at 11:53 HDT (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 – {{convert|19|mi|km}} southeast of Little Sitkin Island.
Earthquake
{{see also|Alaska-Aleutian megathrust}}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.
Tsunami
A tsunami warning was issued,[2] but was soon downgraded to a tsunami advisory for much of the Aleutian Islands;[3] however, the hypocenter was too deep to generate a tsunami that would affect the Pacific basin.[4] A small non-destructive tsunami was generated.[5]
See also
- List of earthquakes in 2014
- List of earthquakes in Alaska
- List of earthquakes in the United States
References
1. ^{{cite web|title=M7.9 - 19km SE of Little Sitkin Island, Alaska|url=https://earthquake.usgs.gov/earthquakes/eventpage/usc000rki5#general_summary|author=USGS|publisher=United States Geological Survey}}
2. ^{{cite web|title=TSUNAMI MESSAGE NUMBER 1 NWS NATIONAL TSUNAMI WARNING CENTER PALMER AK|url=http://www.tsunami.gov/product.php?id=TSUWCA.20140623.2057.001|website=tsunami.gov|publisher=US National Weather Service|accessdate=24 June 2014}}
3. ^{{cite web|title=TSUNAMI MESSAGE NUMBER 4 NWS NATIONAL TSUNAMI WARNING CENTER PALMER AK|url=http://www.tsunami.gov/product.php?id=TSUWCA.20140623.2244.004|website=tsunami.gov|publisher=US National Weather Service|accessdate=24 June 2014|archive-url=https://web.archive.org/web/20140626022039/http://www.tsunami.gov/product.php?id=TSUWCA.20140623.2244.004|archive-date=2014-06-26|dead-url=yes|df=}}
4. ^{{cite web|title=TSUNAMI BULLETIN NUMBER 002 PACIFIC TSUNAMI WARNING CENTER/NOAA/NWS|url=http://ptwc.weather.gov/text.php?id=pacific.TIBPAC.2014.06.23.2121|website=Pacific Tsunami Warning Center|publisher=US National Weather Service|accessdate=24 June 2014}}
5. ^{{cite web|title=TSUNAMI MESSAGE NUMBER 5 NWS NATIONAL TSUNAMI WARNING CENTER PALMER AK|url=http://www.tsunami.gov/product.php?id=TSUWCA.20140623.2345.005|website=tsunami.gov|publisher=National Weather Service|accessdate=24 June 2014|date=23 June 2014}}
6. ^1 {{cite web|title=M6.0 - 6km WNW of Little Sitkin Island, Alaska|url=https://earthquake.usgs.gov/earthquakes/eventpage/usc000rkii#general_summary|author=USGS|publisher=United States Geological Survey}}