2014 Aleutian Islands earthquake
Mw June 23 at 21:11 UTC [2] January February March April May June July August September October November
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 VIII (Severe). The shock occurred in the Aleutian Islands – part of the US state of Alaska – 19 miles (31 km) southeast of Little Sitkin Island.
Earthquake
The earthquake was initially reported as 8.0 Mw 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.
Tsunami
A tsunami warning was issued,[4] but was soon downgraded to a tsunami advisory for much of the Aleutian Islands;[5] however, the hypocenter was too deep to generate a tsunami that would affect the Pacific basin.[6] A small non-destructive tsunami was generated, with heights of 17 cm on Amchitka.[7][8]
See also
References
- ^ a b USGS. "M7.9 - 19km SE of Little Sitkin Island, Alaska". United States Geological Survey.
- ^ USGS. "M6.0 - 6km WNW of Little Sitkin Island, Alaska". United States Geological Survey.
- ^ "Major earthquake hits off Alaska's Aleutian Islands". Reuters. 24 June 2014. Retrieved 7 August 2021.
- ^ "TSUNAMI MESSAGE NUMBER 1 NWS NATIONAL TSUNAMI WARNING CENTER PALMER AK". tsunami.gov. US National Weather Service. Archived from the original on 1 July 2014. Retrieved 24 June 2014.
- ^ "TSUNAMI MESSAGE NUMBER 4 NWS NATIONAL TSUNAMI WARNING CENTER PALMER AK". tsunami.gov. US National Weather Service. Archived from the original on 2014-06-26. Retrieved 24 June 2014.
- ^ "TSUNAMI BULLETIN NUMBER 002 PACIFIC TSUNAMI WARNING CENTER/NOAA/NWS". Pacific Tsunami Warning Center. US National Weather Service. Retrieved 24 June 2014.
- ^ "Tsunami Event: ALEUTIAN ISLANDS, ALASKA". NGDC.
- ^ "TSUNAMI MESSAGE NUMBER 5 NWS NATIONAL TSUNAMI WARNING CENTER PALMER AK". tsunami.gov. National Weather Service. 23 June 2014. Archived from the original on 1 July 2014. Retrieved 24 June 2014.
Sources
- Ye, L.; Lay, T.; Kanamori, H. (2014), "The 23 June 2014 Mw 7.9 Rat Islands archipelago, Alaska, intermediate depth earthquake" (PDF), Geophysical Research Letters, 11 (18): 6389–6395, Bibcode:2014GeoRL..41.6389Y, doi:10.1002/2014GL061153
External links
- The International Seismological Centre has a bibliography and/or authoritative data for this event.
- M7.9 Rat Islands Earthquake of June 23, 2014 Alaska Earthquake Center (archived)
- v
- t
- e
- Eketahuna, New Zealand (6.1, Jan 20)
- Yutian, Xinjiang, China (6.9, Feb 12)
- La Habra, California, U.S. (5.1, Mar 29)
- Iquique, Chile (8.2, Apr 1)
- Managua, Nicaragua (6.1, Apr 10)
- Guerrero, Mexico (7.2, Apr 18)
- Mae Lao, Thailand (6.1, May 5)
- Sindh, Pakistan (4.5, May 8)
- Aegean Sea (6.9, May 24)
- Yingjiang, Yunnan, China (5.6, May 24)
- Aleutian Islands, United States (7.9, Jun 23)
- Mexico–Guatemala (6.9, Jul 7)
- Alaska, United States (6.0, Jul 25)
- Ludian, Yunnan, China (6.1, Aug 3 †‡)
- Orkney, South Africa (5.5, Aug 5)
- Cayambe, Ecuador (5.1, Aug 12)
- Murmuri, Iran (6.2, Aug 18)
- Napa, California, U.S. (6.0, Aug 24)
- Cusco Region, Peru (4.9, Sep 28)
- Jinggu, Yunnan, China (6.0, Oct 7)
- Intipuca, El Salvador (7.3, Oct 14)
- Kangding, Sichuan, China (5.9, Nov 22)
- † indicates earthquake resulting in at least 30 deaths
- ‡ indicates the deadliest earthquake of the year
- Times for all earthquakes are in UTC
