Magnitude 7.4 - EAST OF THE KURIL ISLANDS
2009 January 15 17:49:39 UTC
- This event has been reviewed by a seismologist.
|Depth||36 km (22.4 miles) set by location program|
|Region||EAST OF THE KURIL ISLANDS|
|Distances||435 km (270 miles) S of Severo-Kuril'sk, Kuril Islands, Russia|
595 km (370 miles) ENE of Kuril'sk, Kuril Islands
1785 km (1110 miles) NE of TOKYO, Japan
7245 km (4500 miles) NE of MOSCOW, Russia
|Location Uncertainty||horizontal +/- 3.6 km (2.2 miles); depth fixed by location program|
|Parameters||NST=369, Nph=369, Dmin=731.2 km, Rmss=0.87 sec, Gp= 14°,|
M-type=regional moment magnitude (Mw), Version=U
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The Kuril Islands earthquake of January 15th, 2009 occurred as a result of thrust faulting within the Pacific plate. The event occurred near the outer-rise of the Pacific plate about 30 km to the east of where the Pacific plate subducts beneath the Okhotsk plate. In this region, the Pacific plate moves northwest with respect to the Okhotsk plate with a velocity of about 90 mm/yr.
Large and great earthquakes are not uncommon in this region. The location of this event is approximately 90 km to the northeast of the Mw 8.1 outer rise earthquake of January 13th 2007, which occurred as a result of normal faulting near the Pacific plate outer-rise. On November 15th 2006, an Mw 8.3 subduction-related thrust earthquake occurred approximately 160km to the southwest.
Scientific & Technical Information
The earthquake locations and magnitudes cited in NOAA tsunami statements and bulletins are preliminary and are superseded by USGS locations and magnitudes computed using more extensive data sets.
General Tsunami Information
- Preliminary Earthquake Report
- U.S. Geological Survey, National Earthquake Information Center:
World Data Center for Seismology, Denver