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Terremoto forte mag. 6.0 - Gulf of Alaska, 15 km a nord da Semidi s , Borough di Kodiak Island County, Alaska, Stati Uniti, mercoledì, 25 febbraio 1953

Terremoto forte magnitudine 6.0 at 48 km depth
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Ho sentito questo terremoto
I didn't feel it
Data & ora: 25 Feb 1953 21:16:21 UTC
Magnitudine: 6Profondità: 47.7 km
Epicentro latitudine / longitudine: 56.186°N / 156.607°W

(
Gulf of Alaska,
Alaska,
Stati Uniti)
Vulcano più vicino:
Yantarni (99 km / 62 mi)
Nearby towns and cities:120 km E da Chignik Lagoon (pop: 78) -->
Vedi sismi vicini150 km ESE da Port Heiden (pop: 98) -->
Vedi sismi vicini261 km ENE da Sand Point (pop: 1,060) -->
Vedi sismi vicini300 km SO da Kodiak Station (pop: 1,300) -->
Vedi sismi vicini311 km SO da Kodiak (pop: 6,250) -->
Vedi sismi vicini380 km ENE da King Cove (pop: 1,010) -->
Vedi sismi vicini487 km SO da Homer (pop: 5,520) -->
Vedi sismi vicini488 km SO da Anchor Point (pop: 1,930) -->
Vedi sismi vicini504 km SO da Fritz Creek (pop: 1,930) -->
Vedi sismi vicini605 km SO da Lowell Point (pop: 2,790) -->
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!)
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Magnitudine | Profondità | Ubicazione | Fonte |
M 6.0 | 48 km | Alaska Peninsula (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. 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).
Recorded aftershocks, latest first (0 quakes):So far, no aftershocks have been registered.Earlier earthquakes in the same area
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