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Terremoto molto forte magnitudine 6.0 - North Pacific Ocean, 73 km a sud-est da Herbert , Aleutians West, Alaska, Stati Uniti, domenica, 24 marzo 1957
Terremoto molto forte magnitudine 6.0 at 20 km depth
Ho sentito questo terremoto
I didn't feel it
Data & ora: 24 Mar 1957 11:06:14 UTC
Magnitudine: 6Profondità: 20.0 km
Epicentro latitudine / longitudine: 52.166°N / 169.62°W
(
North Pacific Ocean,
Alaska,
Stati Uniti)
Vulcano più vicino:
Herbert (72 km / 45 mi)
Nearby towns and cities:100 km SSO da Nikolski (pop: 18) -->
Vedi sismi vicini281 km SO da Isola di Unalaska (pop: 4,490) -->
Vedi sismi vicini312 km E da Atka (pop: 64) -->
Vedi sismi vicini337 km SO da Akutan (pop: 1,040) -->
Vedi sismi vicini508 km SO da False Pass (pop: 40) -->
Vedi sismi viciniFonte dati primaria:
USGS (United States Geological Survey)
Stima dell'energia sismica liberata: 6.3 x 10
13 joules (17.5 gigawatt hours, equivalent to 15080 tons of TNT or 0.9 atomic bombs!)
More info[Visualizza mappa]
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| Magnitudine | Profondità | Ubicazione | Fonte |
| 6.0 | 20 km | Fox 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. 100 km
2 (=39 sqare miles) as a first-order estimate. The length of the rupture zone thus was probably around 17 km (11 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).
01 Aug 1957 16:18 UTC
| M 5.6 | 0 km (0 mi) depth
| 32 km (20 mi) distance
| USGS | Details13 Jul 1957 00:59 UTC
| M 5.7 | 25.8 km (16 mi) depth
| 11 km (7 mi) distance
| USGS | Details29 Apr 1957 04:30 UTC
| M 5.6 | 25 km (15.5 mi) depth
| 53 km (33 mi) distance
| USGS | Details09 Apr 1957 20:24 UTC
| M 5.7 | 25 km (15.5 mi) depth
| 39 km (24 mi) distance
| USGS | Details
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