2013 Okhotsk Sea earthquake

The 2013 Okhotsk Sea earthquake occurred with a moment magnitude of 8.3 at 15:44:49 local time (05:44:49 UTC) on 24 May.[1] It had an epicenter in the Sea of Okhotsk and affected primarily (but not only) Asian Russia, especially the Kamchatka Peninsula where the shaking lasted for five minutes.[2] Due to its great depth (609 km), it was not particularly intense at the surface, but was felt over a very large area. Such a deep-focus earthquake could be felt not only in areas surrounding the Okhotsk Sea but also in places as far as Tokyo (JMA 1) (about 2,374 km away), Nanjing (more than 4,000 km away), Atyrau (MM V) (about 7,196 km away), and Moscow (about 7,370 km away).[3][4][5][6][7] The shaking prompted almost 900 residents to leave their homes in Moscow.[6][8]

2013 Okhotsk Sea earthquake
UTC time2013-05-24 05:44:48
ISC event603007131
USGS-ANSSComCat
Local date24 May 2013 (2013-05-24)
Local time15:44:49
Magnitude8.3 Mw [1]
Depth609 km
Epicenter54.874°N 153.280°E / 54.874; 153.280
Areas affectedRussia
Max. intensityV (Moderate) [1]

A related aftershock with a magnitude Mw 6.7 produced a supershear earthquake. It was an extremely deep (640 kilometers (400 miles)) supershear as well as unusually fast at "eight kilometers per second (five miles per second), nearly 50 percent faster than the shear wave velocity at that depth."[9]

References
  1. ANSS. "M8.3 - Sea of Okhotsk". Comprehensive Catalog. U.S. Geological Survey. Retrieved 2018-05-08.
  2. Землетрясение в Охотском море потрясло Москву (in Russian). РИА Новости. 2013-05-24. Retrieved 2013-05-24.
  3. "俄罗斯海域发生8.2级地震 江苏多地网友称有震感_资讯频道_凤凰网".
  4. "Atyrau shaken by earthquake (Updated) — news on Ak Zhaik".
  5. В Охотском море произошло мощное землетрясение (in Russian). РИА "Сахалин—Курилы". Archived from the original on 2013-05-25. Retrieved 2013-05-24.
  6. "Tremors felt in Moscow as 8.2 quake rattles Russia's Sakhalin region".
  7. "時事ドットコム". Archived from the original on 2013-06-25.
  8. "New earthquake in Okhotsk Sea, magnitude 6.8". Archived from the original on 2013-05-29. Retrieved 2013-05-25.
  9. "Researchers find evidence of super-fast deep earthquake". Phys.org. July 10, 2014. Retrieved July 10, 2014.
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