My OperaOkhotsk Deep Quakes
Monday, July 7, 2008 3:12:55 PM
A major earthquake with a magnitude of 7.7 hit the region of the Sea of Okhotsk early Saturday.
The quake was felt in Petropavlovsk in Kamchatska. Nobody was hurt, there was no destruction, and no tsunami.
It may be interesting to compare three different earthquakes in the region over the last weak.
1) The mentioned 7.7 magnitude on Saturday 5 July 2008 at 02:12:04 UTC at 53.892°N, 152.884°E - Depth 633.3 km,
2) A 5.0 magnitude on Saturday 5 July, 2008 at 02:30:55 UTC at 54.031°N, 153.885°E -
Depth 486 km.
3) An earlier 4.0 magnitude on Friday 4 July 2008 at 52.97 N, 162.87 E (in the Pacific east off Petropavlovsk) - Depth - 33 km.
I have combined two USGS earthquake maps to show the 7.7 and 5.0 quakes on the same map. The 3 earthquakes occurred at the Benioff zone of a subduction zone, The pattern is even easier to follow if we look at the map below of earthquakes since 1990.
The Kamchatka Peninsula is a volcanic arc formed by the subduction at the Kuril-Kamchatka Trench where the Pacific Plate is sliding beneath the Okhotsk Plate.
* http://www.physorg.com/news134450588.html
* http://www.bloomberg.com/apps/news?pid=20601080&sid=arSokAxTX0yk&refer=asia
* http://english.people.com.cn/90001/90776/90882/6442694.html
* http://rss.xinhuanet.com/newsc/english/2008-07/05/content_8494580.htm
The quake was felt in Petropavlovsk in Kamchatska. Nobody was hurt, there was no destruction, and no tsunami.
It may be interesting to compare three different earthquakes in the region over the last weak.
1) The mentioned 7.7 magnitude on Saturday 5 July 2008 at 02:12:04 UTC at 53.892°N, 152.884°E - Depth 633.3 km,
2) A 5.0 magnitude on Saturday 5 July, 2008 at 02:30:55 UTC at 54.031°N, 153.885°E -
Depth 486 km.
3) An earlier 4.0 magnitude on Friday 4 July 2008 at 52.97 N, 162.87 E (in the Pacific east off Petropavlovsk) - Depth - 33 km.
I have combined two USGS earthquake maps to show the 7.7 and 5.0 quakes on the same map. The 3 earthquakes occurred at the Benioff zone of a subduction zone, The pattern is even easier to follow if we look at the map below of earthquakes since 1990.The Kamchatka Peninsula is a volcanic arc formed by the subduction at the Kuril-Kamchatka Trench where the Pacific Plate is sliding beneath the Okhotsk Plate.* http://www.physorg.com/news134450588.html
* http://www.bloomberg.com/apps/news?pid=20601080&sid=arSokAxTX0yk&refer=asia
* http://english.people.com.cn/90001/90776/90882/6442694.html
* http://rss.xinhuanet.com/newsc/english/2008-07/05/content_8494580.htm
You must be 
hypocentre # Monday, July 7, 2008 5:34:19 PM