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Large Earthquake Strikes Off the Coast of Japan

Posted by feww on December 21, 2008

Magnitude 6.5 Earthquake Strikes Off the Coast of Honshu, Japan

The Mainshock was followed by a cluster of at least 5 moderate to strong aftershocks magnitude 4.8  to 5.3.

Update: A magnitude 6.0 aftershock struck near location of mainshock [36.592°N, 142.269°E,] on December 21, 2008 at 09:16:44 UTC.

10-degree Map Centered at 35°N,140°E

japan-21-dec-08
Source: USGS

Earthquake Details

Magnitude: 6.5

Date-Time: Saturday, December 20, 2008 at 10:29:22 UTC

Location: 36.603°N, 142.356°E
Depth: 10 km (6.2 miles) set by location program
Region: OFF THE EAST COAST OF HONSHU, JAPAN
Distances:

  • 140 km (85 miles) ESE of Iwaki, Honshu, Japan
  • 170 km (105 miles) E of Mito, Honshu, Japan
  • 210 km (130 miles) SE of Fukushima, Honshu, Japan
  • 255 km (160 miles) ENE of TOKYO, Japan

Location Uncertainty: horizontal +/- 8.7 km (5.4 miles); depth fixed by location program

Sourc: USGS NEIC (WDCS-D)

Event ID: us2008avan

Seismicity in 2008

japan-21-dec-08-n2

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