Major magnitude 7.8 earthquake - North Pacific Ocean, USA, on Thursday, 7 March 1929 at 01:34 (GMT)

Major magnitude 7.8 earthquake - North Pacific Ocean, USA, on Thursday, 7 March 1929 at 01:34 (GMT)

Tremblement de terre majeur magnitude 7.8 at 15 km depth

Date & time: 7 Mar 1929 01:34:42 UTC
Magnitude: 7.8
Profondeur: 15.0 km
Epicenter latitude / longitude: 50.852°N / 169.753°W (Océan Pacifique Nord, États-Unis)
Volcan le plus près: Yunaska (208 km / 129 mi)
Nearby towns and cities:
240 km SSO de Nikolski (pop: 18) --> Voir les séismes à proximité!
342 km ESE de Atka (pop: 64) --> Voir les séismes à proximité!
401 km SO de Unalaska (pop: 4,490) --> Voir les séismes à proximité!
453 km SO de Akutan (pop: 1,040) --> Voir les séismes à proximité!
616 km SO de False Pass (pop: 40) --> Voir les séismes à proximité!
Primary data source: USGS (United States Geological Survey)
Estimated released energy: 3.2 x 1016 joules (8784 gigawatt hours, equivalent to 7.6 x 106 tons of TNT or 472.4 atomic bombs!) More info
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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.
MagnitudeProfondeurLocationSource
M 7.815 kmsouth of the Aleutian Islands (USA)USGS
Note: for quakes of 2012 and earlier, our database often contains only records from USGS.

User reports for this quake

User reports estimate the perceived ground shaking intensity according to the MMI (Modified Mercalli Intensity) scale.
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Aftershocks

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Recorded aftershocks, latest first (5 quakes):
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Earlier earthquakes in the same area

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