Major magnitude 6.9 earthquake - 134 km east of Shikotan, Sakhalin Oblast, Russia, on Saturday, December 21, 1946 at 10:18 GMT
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Major magnitude 6.9 earthquake at 20 km depth
Depth: 20.0 km
Epicenter latitude / longitude: 43.632°N / 148.374°E (North Pacific Ocean, Russia)
Antipode: 43.632°S / 31.626°W
Nearest volcano: Urbich Caldera (143 km / 89 mi)
Nearby towns and cities:
134 km (83 mi) E of Shikotan (pop: 2,100) --> See nearby quakes!
182 km (113 mi) SSE of Kuril'sk (pop: 1,720) --> See nearby quakes!
206 km (128 mi) E of Yuzhno-Kurilsk (pop: 6,470) --> See nearby quakes!
207 km (129 mi) ESE of Otrada (pop: 3,220) --> See nearby quakes!
228 km (142 mi) E of Nemuro (Japan) (pop: 31,200) --> See nearby quakes!
261 km (162 mi) E of Shibetsu (Japan) (pop: 21,700) --> See nearby quakes!
332 km (206 mi) ENE of Kushiro (Japan) (pop: 183,600) --> See nearby quakes!
332 km (206 mi) E of Abashiri (Japan) (pop: 42,500) --> See nearby quakes!
344 km (214 mi) E of Motomachi (Abashiri District, Japan) (pop: 23,000) --> See nearby quakes!
361 km (224 mi) E of Kitami (Japan) (pop: 113,100) --> See nearby quakes!
Primary data source: USGS (United States Geological Survey)
Estimated released energy: 1.4 x 1015 joules (392 gigawatt hours, equivalent to 3.4 x 105 tons of TNT or 21.1 atomic bombs!) | about seismic energy
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.
|6.9||20 km||east of the Kuril Islands (Russia)||USGS|
User reports for this quake
User reports estimate the perceived ground shaking intensity according to the MMI (Modified Mercalli Intensity) scale.
Recorded aftershocks, latest first (2 quakes)
|Date and time||Mag|
|Apr 14, 1947 07:15|
75 years ago
|143 km E of Shikotan, Sakhalin Oblast, Russia||More|
|Jan 3, 1947 02:17|
75 years ago
|Russia, 265 km E of Nemuro, Hokkaido, Japan||More|