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Talk:2011 Tōhoku earthquake and tsunami

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This is an old revision of this page, as edited by ジャコウネズミ (talk | contribs) at 10:01, 19 June 2014 (→‎Largest in Japan.: comment). The present address (URL) is a permanent link to this revision, which may differ significantly from the current revision.


magnitude 9.03 (Mw)

Is it an error?78.156.109.166 (talk) 15:14, 3 February 2013 (UTC)[reply]

I agree - the references all quote magnitude 9.0 from USGS, not 9.03. Where did this number come from? Carl-PG74 (talk) 05:52, 24 April 2013 (UTC)[reply]
This man says 9.03. Maybe he's reading this Wikipedia article. Besides, earthquakes never have more than 1 number after the dot, to my knowledge. http://www.youtube.com/watch?v=drhWhd-i4oE 78.156.109.166 (talk) 09:49, 26 November 2013 (UTC)[reply]

Largest in Japan.

Is it? The 869 Sanriku earthquake was believed to could have been around 9.0. 78.156.109.166 (talk) 10:15, 3 December 2013 (UTC)[reply]

"around 9.0" has recently proposed by Tsunami deposit researches.

  1. M 8.3　Utsu, T., 2004, Catalog of Damaging Earthquakes in the World (Through 2002), the Dbase file distributed at the memorial party of Prof. Tokuji Utsu held in Tokyo.
  2. M 8.3 ± 1/4 宇佐美龍夫 (Tatsuo Usami) (2003). 日本被害地震総覧. 東京大学出版会. ISBN 9784130607599.
  3. M 8.3, Mw 8.4 国立天文台 [in Japanese] (2011). 理科年表 平成24年. 丸善. p. 721. ISBN 9784621084397.
  4. around 9.0 proposed by Koketsu, K., Kaminuma, K., individually, at The 190th meeting of The Coordinating Comittee for Earthquake Prediction, Japan (CCEP) (2011)

Please see also ja:貞観地震 or 869 Sanriku earthquake.--ジャコウネズミ (talk) 10:01, 19 June 2014 (UTC)[reply]

Damage from the earthquake alone

How much damage/casualties from the earthquake alone (not the tsunami)? --78.156.109.166 (talk) 15:50, 6 December 2013 (UTC)[reply]

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About aftershocks

I've been updated aftershocks, but is it better to update aftershocks referenced on Ｍ5.0以上の余震回数(that means "different number of magnitude of the aftershock table M5.0 or more) instead of 震度1以上の余震の最大震度別地震回数表(that means "different number of maximum seismic intensity of the aftershock earthquake table one or more" of Japan Meteorological Agency)? I think that it might have poor meanings on seismic intensity of JMA out of Japan, in the other hand, it may have some meanings that update with same measure in this article. In addition, the magnitudes announced by JMA (Mj) at the first have a little differences when comparing with moment magnitude (Mw) - are increasing in large number of magnitude such as the main shock -, causing necessity to warn tsunami(s) spread to every regions of Japan as fast as possible, then, JMA researches Mw later than announced Mj, and the table that I've just suggested has some corrections in later.--ジャコウネズミ (talk) 22:45, 15 June 2014 (UTC)--Please see also Japan Meteorological Agency seismic intensity scale.--ジャコウネズミ (talk) 23:28, 15 June 2014 (UTC)[reply]

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