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Major magnitude 7.1 earthquake - Bering Sea, 47 mi south of Adak, Aleutians West County, Alaska, USA, on Thursday, 14 March 1957 at 14:47 (GMT)
Major magnitude 7.1 earthquake at 25 km depth
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Date & time: 14 Mar 1957 14:47:50 UTC
Magnitude: 7.1Depth: 25.0 km
Epicenter latitude / longitude: 51.196°N / 176.733°W
(
Bering Sea,
Alaska,
United States)
Nearest volcano:
Moffett (83 km / 52 mi)
Nearby towns and cities:76 km (47 mi) S of Adak (pop: 332) -->
See nearby quakes!207 km (129 mi) WSW of Atka (pop: 64) -->
See nearby quakes!Primary data source:
USGS (United States Geological Survey)
Estimated released energy: 2.8 x 10
15 joules (783 gigawatt hours, equivalent to 6.7 x 10
5 tons of TNT or 42.1 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 7.1 | 25 km | Andreanof Islands, Aleutian Islands, Alaska (USA) | USGS |
Note: for quakes of 2012 and earlier, our database often contains only records from 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. 1259 km
2 (=486 sqare miles) as a first-order estimate. The length of the rupture zone thus was probably around 61 km (38 mi).
Aftershocks typically occur during the weeks, months or even a year 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).
06 Feb 1959 14:33 UTC
| M 5.9 | 55.4 km (34.4 mi) depth
| 71 km (44 mi) distance
| USGS | Details19 Dec 1958 18:36 UTC
| M 5.7 | 15 km (9.3 mi) depth
| 60 km (37 mi) distance
| USGS | Details02 Nov 1958 10:44 UTC
| M 5.6 | 0 km (0 mi) depth
| 115 km (71 mi) distance
| USGS | Details20 Oct 1958 00:55 UTC
| M 5.7 | 35 km (21.7 mi) depth
| 125 km (78 mi) distance
| USGS | Details17 Aug 1958 09:08 UTC
| M 5.8 | 15 km (9.3 mi) depth
| 40 km (25 mi) distance
| USGS | Details16 Aug 1958 13:17 UTC
| M 6.1 | 25 km (15.5 mi) depth
| 56 km (35 mi) distance
| USGS | Very strong mag. 6.1 earthquake - Bering Sea, 41 mi southeast of Adak, Aleutians West County, Alaska, USA, on Saturday, 16 August 1958 at 13:17 (GMT)14 Aug 1958 14:55 UTC
| M 6.3 | 35 km (21.7 mi) depth
| 99 km (61 mi) distance
| USGS | Very strong mag. 6.3 earthquake - Bering Sea, 37 mi southeast of Anagaksik Island, Aleutians West County, Alaska, USA, on Thursday, 14 August 1958 at 14:55 (GMT)13 Aug 1958 20:13 UTC
| M 5.7 | 15 km (9.3 mi) depth
| 104 km (64 mi) distance
| USGS | Details21 Jul 1958 14:37 UTC
| M 6.1 | 35 km (21.7 mi) depth
| 125 km (78 mi) distance
| USGS | Strong mag. 6.1 earthquake - Bering Sea, 10.5 mi south of Tag s Island, Aleutians West County, Alaska, USA, on Monday, 21 July 1958 at 14:37 (GMT)18 Jul 1958 00:39 UTC
| M 5.9 | 25 km (15.5 mi) depth
| 18 km (11 mi) distance
| USGS | Details17 Jul 1958 20:59 UTC
| M 5.9 | 25 km (15.5 mi) depth
| 7 km (4 mi) distance
| USGS | Details17 Jul 1958 19:02 UTC
| M 5.8 | 25 km (15.5 mi) depth
| 6 km (4 mi) distance
| USGS | Details01 Jul 1958 05:53 UTC
| M 6.0 | 25 km (15.5 mi) depth
| 56 km (35 mi) distance
| USGS | Strong mag. 6.0 earthquake - Bering Sea, 26 mi southwest of Adak, Aleutians West County, Alaska, USA, on Tuesday, 1 July 1958 at 05:53 (GMT)25 May 1958 14:54 UTC
| M 5.8 | 25 km (15.5 mi) depth
| 21 km (13 mi) distance
| USGS | Details25 May 1958 00:35 UTC
| M 5.8 | 25 km (15.5 mi) depth
| 45 km (28 mi) distance
| USGS | Details22 Feb 1958 10:50 UTC
| M 6.3 | 15 km (9.3 mi) depth
| 143 km (89 mi) distance
| USGS | Very strong mag. 6.3 earthquake - North Pacific Ocean, 127 mi southeast of Adak, Aleutians West County, Alaska, USA, on Saturday, 22 February 1958 at 10:50 (GMT)Show all
12 Feb 1958 23:43 UTC
| M 6.0 | 40.1 km (24.9 mi) depth
| 120 km (75 mi) distance
| USGS | Strong mag. 6.0 earthquake - Bering Sea, 26 mi southeast of Oglodak Island, Aleutians West County, Alaska, USA, on Wednesday, 12 February 1958 at 23:43 (GMT)03 Dec 1957 01:46 UTC
| M 6.2 | 0 km (0 mi) depth
| 94 km (59 mi) distance
| USGS | Major magnitude 6.2 earthquake - Bering Sea, 20 mi south of Tannaga Island, Aleutians West County, Alaska, USA, on Tuesday, 3 December 1957 at 01:46 (GMT)26 Nov 1957 11:35 UTC
| M 6.1 | 25 km (15.5 mi) depth
| 20 km (13 mi) distance
| USGS | Very strong mag. 6.1 earthquake - Bering Sea, 47 mi south of Adak, Aleutians West County, Alaska, USA, on Tuesday, 26 November 1957 at 11:35 (GMT)16 Nov 1957 01:48 UTC
| M 5.7 | 0 km (0 mi) depth
| 32 km (20 mi) distance
| USGS | Details07 Sep 1957 10:06 UTC
| M 6.1 | 25 km (15.5 mi) depth
| 136 km (85 mi) distance
| USGS | Very strong mag. 6.1 earthquake - Bering Sea, 19 mi east of Amatignak Island, Aleutians West County, Alaska, USA, on Saturday, 7 September 1957 at 10:06 (GMT)06 Sep 1957 04:54 UTC
| M 5.5 | 20 km (12.4 mi) depth
| 97 km (60 mi) distance
| USGS | Details25 Jul 1957 07:42 UTC
| M 5.9 | 20 km (12.4 mi) depth
| 39 km (24 mi) distance
| USGS | Details23 Jul 1957 00:45 UTC
| M 6.4 | 25 km (15.5 mi) depth
| 34 km (21 mi) distance
| USGS | Very strong mag. 6.4 earthquake - Bering Sea, 48 mi southwest of Adak, Aleutians West County, Alaska, USA, on Tuesday, 23 July 1957 at 00:45 (GMT)14 Jun 1957 06:24 UTC
| M 6.1 | 35 km (21.7 mi) depth
| 81 km (51 mi) distance
| USGS | Strong mag. 6.1 earthquake - Bering Sea, 2.6 mi west of Tannak Island, Aleutians West County, Alaska, USA, on Friday, 14 June 1957 at 06:24 (GMT)13 Jun 1957 10:40 UTC
| M 6.8 | 19.1 km (11.9 mi) depth
| 113 km (70 mi) distance
| USGS | Major magnitude 6.8 earthquake - Bering Sea, 33 mi south of Oglodak Island, Aleutians West County, Alaska, USA, on Thursday, 13 June 1957 at 10:40 (GMT)11 Jun 1957 23:54 UTC
| M 5.9 | 35 km (21.7 mi) depth
| 44 km (27 mi) distance
| USGS | Details22 May 1957 13:29 UTC
| M 6.1 | 15 km (9.3 mi) depth
| 123 km (76 mi) distance
| USGS | Very strong mag. 6.1 earthquake - North Pacific Ocean, 123 mi south of Adak, Aleutians West County, Alaska, USA, on Wednesday, 22 May 1957 at 13:29 (GMT)12 Apr 1957 04:17 UTC
| M 5.0 | 0 km (0 mi) depth
| 127 km (79 mi) distance
| USGS | Details10 Apr 1957 09:09 UTC
| M 5.8 | 14.4 km (8.9 mi) depth
| 101 km (63 mi) distance
| USGS | Details09 Apr 1957 11:02 UTC
| M 5.9 | 35 km (21.7 mi) depth
| 133 km (83 mi) distance
| USGS | Details31 Mar 1957 10:08 UTC
| M 5.8 | 35 km (21.7 mi) depth
| 123 km (76 mi) distance
| USGS | Details30 Mar 1957 09:17 UTC
| M 6.2 | 33 km (20.5 mi) depth
| 126 km (78 mi) distance
| USGS | Strong mag. 6.2 earthquake - Bering Sea, 16 mi southeast of Oglodak Island, Aleutians West County, Alaska, USA, on Saturday, 30 March 1957 at 09:17 (GMT)19 Mar 1957 12:50 UTC
| M 6.8 | 15 km (9.3 mi) depth
| 117 km (72 mi) distance
| USGS | Major magnitude 6.8 earthquake - Bering Sea, 35 mi southeast of Oglodak Island, Aleutians West County, Alaska, USA, on Tuesday, 19 March 1957 at 12:50 (GMT)19 Mar 1957 11:28 UTC
| M 6.0 | 35 km (21.7 mi) depth
| 18 km (11 mi) distance
| USGS | Strong mag. 6.0 earthquake - Bering Sea, 38 mi south of Adak, Aleutians West County, Alaska, USA, on Tuesday, 19 March 1957 at 11:28 (GMT)16 Mar 1957 02:34 UTC
| M 7.2 | 25 km (15.5 mi) depth
| 151 km (94 mi) distance
| USGS | Major magnitude 7.2 earthquake - Bering Sea, 15 mi northeast of Amatignak Island, Aleutians West County, Alaska, USA, on Saturday, 16 March 1957 at 02:34 (GMT)
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