Very strong mag. 6.2 earthquake - North Pacific Ocean, 92 mi southwest of Unalaska, Aleutians West (CA) County, Alaska, USA, on Fri, 10 Aug 2012 09:37

Very strong magnitude 6.2 earthquake at 13 km depth
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Date & time: 10 Aug 2012 18:37:42 UTC
Local time at epicenter: Fri, 10 Aug 2012 09:37
Magnitude: 6.2Depth: 12.9 km
Epicenter latitude / longitude: 52.6583°N / 167.425°W

(
North Pacific Ocean,
Alaska,
United States)
Nearest volcano:
Okmok (96 km / 60 mi)
Nearby towns and cities:102 km (63 mi) ESE of Nikolski (pop: 18) -->
See nearby quakes!148 km (92 mi) SSW of Unalaska (pop: 4,490) -->
See nearby quakes!197 km (123 mi) SW of Akutan (pop: 1,040) -->
See nearby quakes!360 km (223 mi) SW of False Pass (pop: 40) -->
See nearby quakes!417 km (259 mi) SW of Cold Bay (pop: 123) -->
See nearby quakes!428 km (266 mi) SW of King Cove (pop: 1,010) -->
See nearby quakes!548 km (341 mi) SW of Nelson Lagoon (pop: 52) -->
See nearby quakes!Primary data source:
USGS (United States Geological Survey)
Estimated released energy: 1.3 x 10
14 joules (35 gigawatt hours, equivalent to 30089 tons of TNT or 1.9 atomic bombs!)
More info[show map]
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Data for the same earthquake reported by different agencies
Info: The more agencies report about the same quake and post similar data, the more confidence you can have in the data. It takes normally up to a few hours until earthquake parameters are calculated with near-optimum precision.
Magnitude | Depth | Location | Source |
M 6.2 | 13 km | 102km ESE of Nikolski, Alaska | USGS |
M 5.8 | 10 km | FOX ISLANDS, ALEUTIAN ISLANDS | EMSC |
M 6.1 | 10 km | Fox Islands, Aleutian Islands | GFZ |
M 6.2 | 13 km | Fox Islands, Aleutian Islands, Alaska | GeoAu |
Note: for quakes of 2012 and earlier, our database often contains only records from USGS.
![shake map]()
(shakemap: USGS)
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Aftershocks
More info
Based on its magnitude, the fault that was active during the quake ruptured along a surface of approx. 158 km
2 (=61 sqare miles) as a first-order estimate. The length of the rupture zone thus was probably around 22 km (14 mi).
Aftershocks typically occur during the weeks and months following the quake at or near the same fault, at distances of up to approx. two times the length of the rupture zone.
The often broadly linear arrangement of aftershock epicenters encompasses the rupture zone of the main shock (check on the
map below to verify).
Recorded aftershocks, latest first (81 quakes):05 Feb 2013 19:49 UTC
| M 2.5 | 39.1 km (24.3 mi) depth
| 72 km (45 mi) distance
| USGS | Details05 Feb 2013 00:53 UTC
| M 2.2 | 6.7 km (4.2 mi) depth
| 36 km (23 mi) distance
| USGS | Details24 Jan 2013 21:16 UTC
| M 2.6 | 13.9 km (8.6 mi) depth
| 76 km (47 mi) distance
| USGS | Details21 Jan 2013 16:34 UTC
| M 4.3 | 44.4 km (27.6 mi) depth
| 68 km (42 mi) distance
| USGS | Details19 Jan 2013 06:49 UTC
| M 2.7 | 18.1 km (11.2 mi) depth
| 76 km (47 mi) distance
| USGS | Details12 Jan 2013 23:24 UTC
| M 2.6 | 14.4 km (8.9 mi) depth
| 50 km (31 mi) distance
| USGS | Details23 Dec 2012 23:41 UTC
| M 4.2 | 48.6 km (30.2 mi) depth
| 71 km (44 mi) distance
| USGS | Details22 Dec 2012 18:30 UTC
| M 2.0 | 25.3 km (15.7 mi) depth
| 74 km (46 mi) distance
| USGS | Details16 Dec 2012 12:22 UTC
| M 2.3 | 28.2 km (17.5 mi) depth
| 34 km (21 mi) distance
| USGS | Details16 Dec 2012 09:17 UTC
| M 4.6 | 21.3 km (13.2 mi) depth
| 25 km (16 mi) distance
| USGS | Details15 Dec 2012 16:41 UTC
| M 2.3 | 19.8 km (12.3 mi) depth
| 59 km (37 mi) distance
| USGS | Details11 Dec 2012 01:33 UTC
| M 2.8 | 146.3 km (90.9 mi) depth
| 69 km (43 mi) distance
| USGS | Details10 Dec 2012 05:50 UTC
| M 2.7 | 5 km (3.1 mi) depth
| 70 km (44 mi) distance
| USGS | Details03 Dec 2012 19:50 UTC
| M 2.1 | 26.2 km (16.3 mi) depth
| 36 km (22 mi) distance
| USGS | Details03 Dec 2012 19:08 UTC
| M 2.0 | 11.7 km (7.3 mi) depth
| 52 km (32 mi) distance
| USGS | Details10 Nov 2012 21:47 UTC
| M 3.0 | 4.6 km (2.9 mi) depth
| 29 km (18 mi) distance
| USGS | DetailsShow all
09 Nov 2012 07:28 UTC
| M 2.0 | 27.8 km (17.3 mi) depth
| 48 km (30 mi) distance
| USGS | Details17 Oct 2012 07:02 UTC
| M 2.5 | 6.5 km (4 mi) depth
| 27 km (17 mi) distance
| USGS | Details03 Oct 2012 02:03 UTC
| M 2.3 | 20.6 km (12.8 mi) depth
| 76 km (47 mi) distance
| USGS | Details03 Oct 2012 00:50 UTC
| M 4.6 | 25.7 km (16 mi) depth
| 74 km (46 mi) distance
| USGS | Details29 Sep 2012 14:10 UTC
| M 2.4 | 12.4 km (7.7 mi) depth
| 53 km (33 mi) distance
| USGS | Details28 Sep 2012 09:14 UTC
| M 2.8 | 23.1 km (14.4 mi) depth
| 41 km (25 mi) distance
| USGS | Details27 Sep 2012 14:32 UTC
| M 2.4 | 20.8 km (12.9 mi) depth
| 40 km (25 mi) distance
| USGS | Details20 Sep 2012 04:59 UTC
| M 2.7 | 36.7 km (22.8 mi) depth
| 41 km (25 mi) distance
| USGS | Details19 Sep 2012 20:16 UTC
| M 2.7 | 26.3 km (16.3 mi) depth
| 46 km (28 mi) distance
| USGS | Details15 Sep 2012 12:34 UTC
| M 2.0 | 14.9 km (9.3 mi) depth
| 71 km (44 mi) distance
| USGS | Details14 Sep 2012 03:02 UTC
| M 2.6 | 25.7 km (16 mi) depth
| 27 km (17 mi) distance
| USGS | Details13 Sep 2012 05:13 UTC
| M 2.3 | 75.5 km (46.9 mi) depth
| 43 km (27 mi) distance
| USGS | Details13 Sep 2012 04:55 UTC
| M 2.4 | 18.4 km (11.4 mi) depth
| 52 km (32 mi) distance
| USGS | Details12 Sep 2012 04:17 UTC
| M 2.3 | 22 km (13.7 mi) depth
| 70 km (44 mi) distance
| USGS | Details11 Sep 2012 23:29 UTC
| M 2.4 | 5.4 km (3.4 mi) depth
| 50 km (31 mi) distance
| USGS | Details11 Sep 2012 23:28 UTC
| M 3.4 | 21.4 km (13.3 mi) depth
| 59 km (37 mi) distance
| USGS | Details11 Sep 2012 23:28 UTC
| M 3.4 | 20.3 km (12.6 mi) depth
| 54 km (34 mi) distance
| USGS | Details11 Sep 2012 22:49 UTC
| M 2.3 | 50.9 km (31.6 mi) depth
| 69 km (43 mi) distance
| USGS | Details11 Sep 2012 22:32 UTC
| M 3.3 | 20.9 km (13 mi) depth
| 57 km (35 mi) distance
| USGS | Details11 Sep 2012 22:32 UTC
| M 3.2 | 19 km (11.8 mi) depth
| 52 km (32 mi) distance
| USGS | Details11 Sep 2012 21:40 UTC
| M 3.3 | 53.6 km (33.3 mi) depth
| 84 km (52 mi) distance
| USGS | Details11 Sep 2012 19:32 UTC
| M 2.2 | 25.5 km (15.8 mi) depth
| 56 km (35 mi) distance
| USGS | Details11 Sep 2012 18:15 UTC
| M 2.6 | 21.4 km (13.3 mi) depth
| 59 km (37 mi) distance
| USGS | Details11 Sep 2012 18:15 UTC
| M 2.6 | 23.1 km (14.4 mi) depth
| 60 km (37 mi) distance
| USGS | Details11 Sep 2012 18:15 UTC
| M 2.7 | 19.5 km (12.1 mi) depth
| 53 km (33 mi) distance
| USGS | Details11 Sep 2012 18:04 UTC
| M 2.0 | 20.9 km (13 mi) depth
| 57 km (36 mi) distance
| USGS | Details11 Sep 2012 17:42 UTC
| M 2.2 | 41.2 km (25.6 mi) depth
| 66 km (41 mi) distance
| USGS | Details11 Sep 2012 17:30 UTC
| M 2.6 | 34.9 km (21.7 mi) depth
| 55 km (34 mi) distance
| USGS | Details11 Sep 2012 17:23 UTC
| M 2.8 | 17.1 km (10.6 mi) depth
| 60 km (37 mi) distance
| USGS | Details11 Sep 2012 17:23 UTC
| M 2.8 | 29.9 km (18.6 mi) depth
| 60 km (37 mi) distance
| USGS | Details11 Sep 2012 17:23 UTC
| M 2.8 | 25.5 km (15.8 mi) depth
| 54 km (34 mi) distance
| USGS | Details11 Sep 2012 17:05 UTC
| M 2.1 | 38.8 km (24.1 mi) depth
| 63 km (39 mi) distance
| USGS | Details11 Sep 2012 17:04 UTC
| M 2.6 | 41.1 km (25.5 mi) depth
| 61 km (38 mi) distance
| USGS | Details11 Sep 2012 17:01 UTC
| M 2.5 | 41.5 km (25.8 mi) depth
| 56 km (35 mi) distance
| USGS | Details11 Sep 2012 16:54 UTC
| M 3.1 | 41.7 km (25.9 mi) depth
| 64 km (40 mi) distance
| USGS | Details11 Sep 2012 16:52 UTC
| M 4.0 | 34.3 km (21.3 mi) depth
| 69 km (43 mi) distance
| USGS | Details11 Sep 2012 16:52 UTC
| M 3.4 | 22 km (13.7 mi) depth
| 57 km (36 mi) distance
| USGS | Details11 Sep 2012 16:52 UTC
| M 3.3 | 20 km (12.4 mi) depth
| 53 km (33 mi) distance
| USGS | Details11 Sep 2012 16:44 UTC
| M 2.7 | 19.3 km (12 mi) depth
| 53 km (33 mi) distance
| USGS | Details11 Sep 2012 16:42 UTC
| M 4.2 | 53.4 km (33.2 mi) depth
| 66 km (41 mi) distance
| USGS | Details11 Sep 2012 16:42 UTC
| M 4.1 | 19.3 km (12 mi) depth
| 54 km (33 mi) distance
| USGS | Details08 Sep 2012 09:20 UTC
| M 2.7 | 47.4 km (29.5 mi) depth
| 54 km (33 mi) distance
| USGS | Details03 Sep 2012 02:12 UTC
| M 2.5 | 25.6 km (15.9 mi) depth
| 41 km (25 mi) distance
| USGS | Details31 Aug 2012 19:50 UTC
| M 2.1 | 24 km (14.9 mi) depth
| 31 km (19 mi) distance
| USGS | Details28 Aug 2012 10:06 UTC
| M 2.3 | 25.6 km (15.9 mi) depth
| 49 km (31 mi) distance
| USGS | Details26 Aug 2012 12:31 UTC
| M 2.2 | 21.9 km (13.6 mi) depth
| 57 km (35 mi) distance
| USGS | Details25 Aug 2012 12:37 UTC
| M 3.1 | 27.7 km (17.2 mi) depth
| 51 km (31 mi) distance
| USGS | Details24 Aug 2012 01:24 UTC
| M 2.2 | 50 km (31.1 mi) depth
| 62 km (38 mi) distance
| USGS | Details16 Aug 2012 05:22 UTC
| M 2.1 | 21 km (13 mi) depth
| 36 km (23 mi) distance
| USGS | Details15 Aug 2012 13:04 UTC
| M 2.2 | 25.6 km (15.9 mi) depth
| 36 km (23 mi) distance
| USGS | Details15 Aug 2012 10:54 UTC
| M 2.0 | 41.5 km (25.8 mi) depth
| 36 km (23 mi) distance
| USGS | Details15 Aug 2012 10:52 UTC
| M 2.3 | 39.5 km (24.5 mi) depth
| 36 km (23 mi) distance
| USGS | Details13 Aug 2012 13:45 UTC
| M 2.3 | 22.5 km (14 mi) depth
| 58 km (36 mi) distance
| USGS | Details12 Aug 2012 15:44 UTC
| M 2.7 | 9.2 km (5.7 mi) depth
| 26 km (16 mi) distance
| USGS | Details12 Aug 2012 04:57 UTC
| M 2.7 | 25.4 km (15.8 mi) depth
| 42 km (26 mi) distance
| USGS | Details12 Aug 2012 04:57 UTC
| M 2.6 | 21 km (13 mi) depth
| 48 km (30 mi) distance
| USGS | Details11 Aug 2012 21:57 UTC
| M 2.5 | 5.2 km (3.2 mi) depth
| 47 km (29 mi) distance
| USGS | Details11 Aug 2012 20:48 UTC
| M 2.5 | 25.6 km (15.9 mi) depth
| 30 km (19 mi) distance
| USGS | Details11 Aug 2012 20:28 UTC
| M 2.3 | 25.5 km (15.8 mi) depth
| 38 km (24 mi) distance
| USGS | Details11 Aug 2012 04:42 UTC
| M 2.2 | 41.4 km (25.7 mi) depth
| 39 km (24 mi) distance
| USGS | Details11 Aug 2012 01:16 UTC
| M 2.3 | 20 km (12.4 mi) depth
| 19 km (12 mi) distance
| USGS | Details10 Aug 2012 20:29 UTC
| M 2.0 | 24.4 km (15.2 mi) depth
| 36 km (22 mi) distance
| USGS | Details10 Aug 2012 20:26 UTC
| M 2.5 | 28.3 km (17.6 mi) depth
| 37 km (23 mi) distance
| USGS | Details10 Aug 2012 18:50 UTC
| M 2.2 | 23.9 km (14.9 mi) depth
| 30 km (19 mi) distance
| USGS | Details10 Aug 2012 18:42 UTC
| M 3.6 | 25.6 km (15.9 mi) depth
| 32 km (20 mi) distance
| USGS | Details
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