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2 septembre 2012 7 02 /09 /septembre /2012 16:04

Suite de (1), (2), (3), (4) et (5)

9/7/1854 : Séisme d’Iga Ueno (伊賀上野地)[1]


(Source : Wikimedia Commons)


De magnitude 7,2 à son épicentre, 5 à Osaka, le séisme y fait 10 blessés et cause des dégats à 145 maisons.

Le tsunami du séisme de Houei est oublié, et beaucoup de gens se réfugient sur des bateaux pendant les secousses secondaires. Voici ce qu’écrit Gregory SmitsDanger in the Lowground: Historical Context for the March 11, 2011 Tōhoku Earthquake and Tsunami, The Asia-Pacific Journal Vol 9, Issue 20 No 4, May 16, 2011. 


“An order by Osaka’s Machibugyō in 1854 prohibiting onboard drinking parties clearly indicates that the city authorities regarded fleeing to boats as a perfectly viable option, provided people remain sober.21 Inland earthquakes such as Kanbun were more common than offshore tsunamigenic events, and by 1854, the Hōei Earthquake would indeed have seemed like “an ancient tale” to the few people in Osaka who even knew about it. Much more relevant would have been the magnitude 7.25 Iga-Ueno Earthquake of July 9, 1854, approximately six months prior to Ansei Nankai. As many people as possible rode out the many Iga-Ueno aftershocks in the relative comfort of boats in the rivers.” 

21 Nishiyama Shōjin, “Ansei nankai jishin ni okeru Ōsaka de no shinsai taiō,” in Chūō bōsai kaigi, 1854 Ansei tōkai jishin, Ansei nankai jishin hōkokusho, p. 51. The decree was issued one day after the main shock of the Tōkai earthquake, just before the Nankai earthquake and its tsunami struck.

[1] http://ja.wikipedia.org/wiki/%E4%BC%8A%E8%B3%80%E4%B8%8A%E9%87%8E%E5%9C%B0%E9%9C%87

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