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Due to the 2011 Off the Pacific Coast of Tohoku earthquake (2011/3/11, 14:46) our data release through the internet stopped, as a consequence of damage in our servers and blackout induced by the earthquake. Today, 15 March at 20:00 our data release service has restarted preliminary.(About aftershock data of the 2011 Off the Pacific Coast of Tohoku earthquake)
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Preliminary information on the recorded strong ground motions during the 2011 Off the Pacific Coast of Tohoku earthquake ( (http://www3.kyoshin.bosai.go.jp/k-net/topics/TohokuTaiheiyo_20110311/nied_kyoshin1e.pdf) PDF)
(Updated)
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Relationship between JMA instrumental intensity and Instrumental Modified¡¡Mercalli intensity ¡ÊPDF¡Ë
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2012/02/01-16:44:00 (->detail)
24.70N 125.20E 030km M4.2
Old news are here.
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Overview of K-NET
Instruction manual of how to search for earthquakes and data, Explanation of the Strong-Motion data format are here.
Use this link to access site map. You can view and download image of soil conditions and soil data, and you can get result of data search with the site code.
You can view and download sites list.(Last Updated: June 24, 2011)
You can download utility program for K-NET data. Please see manual of each utility.
Images of characteristics of seismograph
Ocean bottom seismographs distribution
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