Very strong magnitude 7.7 earthquake struck Sea of Okhotsk

Very strong magnitude 7.7 earthquake struck Sea of Okhotsk

A very strong earthquake with recorded magnitude of 7.7 struck Sea of Okhotsk on August 14, 2012 at 2:59 UTC according to USGS. The earthquake had massive depth of 625.9 km (388.9 miles) so no tsunami is expected. Epicenter is located 158 km (98 miles) ENE of Poronaysk, Russia at coordinates 49.784°N, 145.126°E. Preliminary data showed magnitude 7.3 but USGS upgraded it to 7.7. EMSC still has initial magnitude of 7.3.

Following a huge earthquake like this there is a lot of possibilities of other strong aftershocks.

Magnitude7.7
Date-Time
  • Tuesday, August 14, 2012 at 02:59:42 UTC
  • Tuesday, August 14, 2012 at 12:59:42 PM at epicenter
Location49.784°N, 145.126°E
Depth625.9 km (388.9 miles)
RegionSEA OF OKHOTSK
Distances158 km (98 miles) ENE of Poronaysk, Russia
226 km (140 miles) ENE of Shakhtersk, Russia
236 km (146 miles) ENE of Uglegorsk, Russia
243 km (150 miles) ESE of Aleksandrovsk-Sakhalinskiy, Russia
Location Uncertaintyhorizontal +/- 14.5 km (9.0 miles); depth +/- 6.9 km (4.3 miles)
ParametersNST=999, Nph=999, Dmin=>999 km, Rmss=0.68 sec, Gp= 14°,
M-type="moment" magnitude from initial P wave (tsuboi method) (Mi/Mwp), Version=B
Source
  • Magnitude: USGS NEIC (WDCS-D)
    Location: USGS NEIC (WDCS-D)
Event IDusc000bz29




Historic seismicity





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