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Moderate mag. 5.0 earthquake - Bering Sea, 61 mi southeast of Atka, Aleutians West County, Alaska, USA, on Friday, October 04, 2013 20:57:25
Moderate magnitude 5.0 earthquake at 36 km depth
5 Oct 09:17 UTC: First to report: USGS after 20 minutes.
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Date & time: 5 Oct 2013 08:57:25 UTC
Local time at epicenter: Friday, October 04, 2013 20:57:25
Magnitude: 5Depth: 36.3 km
Epicenter latitude / longitude: 51.57°N / 173.2069°W
(
Bering Sea,
Alaska,
United States)
Nearest volcano:
Seguam (96 km / 60 mi)
Nearby towns and cities:97 km (61 mi) SE of Atka (pop: 64) -->
See nearby quakes!239 km (148 mi) E of Adak (pop: 332) -->
See nearby quakes!333 km (207 mi) WSW of Nikolski (pop: 18) -->
See nearby quakes!Primary data source:
USGS (United States Geological Survey)
Estimated released energy: 2 x 10
12 joules (554 megawatt hours, equivalent to 477 tons of TNT)
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 5.0 | 25 km | Andreanof Islands, Aleutian Islands | GFZ |
| M 4.9 | 40 km | ANDREANOF ISLANDS, ALEUTIAN IS. | EMSC |
| M 5.0 | 36 km | 97km SE of Atka, Alaska | 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. 10 km
2 (=4 sqare miles) as a first-order estimate. The length of the rupture zone thus was probably around 5 km (3 mi).
Aftershocks typically occur during the days and weeks 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).
12 Oct 2013 00:49 UTC
| M 2.2 | 25.7 km (16 mi) depth
| 12 km (7 mi) distance
| USGS | Details11 Oct 2013 18:50 UTC
| M 2.1 | 29.4 km (18.3 mi) depth
| 18 km (11 mi) distance
| USGS | Details11 Oct 2013 10:47 UTC
| M 4.3 | 18.5 km (11.5 mi) depth
| 18 km (11 mi) distance
| USGS | Details
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