Magnitude 6.1 - NEAR THE SOUTH COAST OF HONSHU, JAPAN
2009 August 10 20:07:07 UTC
- This event has been reviewed by a seismologist.
|Depth||26 km (16.2 miles) set by location program|
|Region||NEAR THE SOUTH COAST OF HONSHU, JAPAN|
|Distances||30 km (20 miles) SSW of Shizuoka, Honshu, Japan|
55 km (35 miles) E of Hamamatsu, Honshu, Japan
110 km (70 miles) SSW of Kofu, Honshu, Japan
170 km (105 miles) SW of TOKYO, Japan
|Location Uncertainty||horizontal +/- 5.9 km (3.7 miles); depth fixed by location program|
|Parameters||NST=110, Nph=110, Dmin=708.8 km, Rmss=1.01 sec, Gp= 43°,|
M-type=teleseismic moment magnitude (Mw), Version=U
- Did you feel it? Report shaking and damage at your location. You can also view a map displaying accumulated data from your report and others.
One person killed, 123 people injured and 5,192 buildings damaged in the Shizuoka area. One road damaged at Tokyo. Felt (VI) at Shizuoka; (V) at Akiruno and Numazu; (IV) at Atsugi, Ayase, Gotemba, Machida, Okazaki, Tachikawa, Tokyo, Yamato, Yokohama, Zama and Zushi; (III) at Asaka, Atsugi, Fusa, Hachiaji, Hamura, Kawasaki, Kyoto, Machida, Okazaki, Sagamihara, Yokosuka. A tsunami with a wave height of 60 cm was recorded at Yaizu.
The southern Honshu earthquake of August 10, 2009, occurred near the Suruga Trough, on or very near the boundary between the Philippine Sea plate and the Amur plate (sometimes viewed as part of the Eurasia plate). The source region lies just south of the triple junction of the Philippine Sea plate, the Amur plate, and the Okhotsk plate (sometimes viewed as part of the North America plate) and is tectonically complex. In the epicentral region, the Philippine Sea plate subducts west or northwest beneath the Amur plate. Both the subducting Philippine Sea plate and the overriding Amur plate are seismically active due to high intraplate stresses, and the thrust-fault boundary between the plates is seismogenic. Present estimates of the earthquake’s epicenter, focal-depth, and focal-mechanism suggest that the shock did not occur on the plate interface, but they do not permit us to confidently determine if the earthquake occurred within the Philippine Sea plate or the Amur plate.
- Preliminary Earthquake Report
- U.S. Geological Survey, National Earthquake Information Center:
World Data Center for Seismology, Denver