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Posts Tagged ‘Pacific plate subduction zone’

Significant Aftershocks Follow Powerful Japan Quake

Posted by feww on October 26, 2013

Quake magnitude revised down to 7.1Mw, as significant aftershocks strike

Magnitude of the powerful earthquake that struck off Fukushima coast has been revised down to 7.1Mw by USGS/EHP.

The revised details are as follows

  • Magnitude: 7.1Mw
  • Time: 2013-10-26 02:10:16 UTC+09:00
  • Location: 37.170°N, 144.665°E [475km (295mi) ENE of Tokyo, Japan]
  • Depth: 10.0km

At least 4 significant aftershocks have occurred, as of posting, the largest of which measured 5.5Mw.

Meantime, the authorities evacuated the crippled Fukushima Power Plant, after Tsunami Advisories were issued.

The plant operator said on Saturday there was no damage or change in radiation levels at the station following the quake, according to reports.

A 30cm tsunami reached Japan’s east coast, NHK reported.

The quake reportedly shook buildings far away as Tokyo, about 230 km south of Fukushima nuclear plant, and 475km WSW of the epicenter.

Earthquake Location Map

japan quake aftershocks 26oct13
Source: USGS/EHP

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M 7.3 Quake Strikes Off the Pacific Coast of Japan

Posted by feww on October 25, 2013

Powerful Quake Strikes at a depth of about 10 km

Local Tsunami Advisories have been issued for

  • KUJUKURI and SOTOBO areas, CHIBA Prefecture.

The event occurred near Bosei Seamount, east of Japan Trench and about  240km southeast (121 degrees) ESE of the 2011 Tōhoku earthquake.

Time: 2013-10-26 02:10:16 UTC+09:00
Location: 37.194°N 144.663°E
Depth: 10.0km

Earthquake Location Map

M 7.3 Honshu 26oct13
Source: USGS/EHP

Tsunami Map

tsunami map
Map shows the locations where Tsunami Advisories (local Tsunamis measuring 0.2 – 1.0 m high) have been issued. Source: JMA

More Details to follow…

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