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Major magnitude 7.3 earthquake - North Pacific Ocean, 44 mi southeast of Amatignak Island, Aleutians West County, Alaska, USA, on Tuesday, 14 February 1905 at 08:46 (GMT)
Major magnitude 7.3 earthquake at 0 km depth
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Date & time: 14 Feb 1905 08:46:00 UTC
Magnitude: 7.3Depth: 0.0 km
Epicenter latitude / longitude: 50.73°N / 178.55°W
(
North Pacific Ocean,
Alaska,
United States)
Nearest volcano:
Gareloi (119 km / 74 mi)
Nearby towns and cities:184 km (114 mi) SW of Adak (pop: 332) -->
See nearby quakes!343 km (213 mi) WSW of Atka (pop: 64) -->
See nearby quakes!Primary data source:
USGS (United States Geological Survey)
Estimated released energy: 5.6 x 10
15 joules (1562 gigawatt hours, equivalent to 1.3 x 10
6 tons of TNT or 84 atomic bombs!)
More info[show map]
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Data for the same earthquake reported by different agencies
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| Magnitude | Depth | Location | Source |
| M 7.3 | km | Andreanof Islands, Aleutian Islands, Alaska (USA) | 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. 1995 km
2 (=770 sqare miles) as a first-order estimate. The length of the rupture zone thus was probably around 77 km (48 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).
Earlier earthquakes in the same area
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