2013 Okhotsk Sea earthquake
The 2013 Okhotsk Sea earthquake occurred with a moment magnitude of 8.3 at 15:44:49 local time on 24 May. It had an epicenter in the Sea of Okhotsk and affected primarily Asian Russia, especially the Kamchatka Peninsula where the shaking lasted for five minutes. Due to its great depth, 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 , Nanjing, Atyrau , and Moscow. The shaking prompted almost 900 residents to leave their homes in Moscow.
A related aftershock with a magnitude Mw 6.7 produced a supershear earthquake. It was an extremely deep supershear as well as unusually fast at "eight kilometers per second, nearly 50 percent faster than the shear wave velocity at that depth."
