Characteristics of damage due to tsunami propagation in river channels and overflow of their embankments in great east Japan earthquake / Norio Tanaka in JRBM : International journal of river basin management, Vol. 10 N° 3 (Juillet 2012)  

Public ISBD [article]  inJRBM : International journal of river basin management > Vol. 10 N° 3 (Juillet 2012) . - pp. 269-279 Titre : Characteristics of damage due to tsunami propagation in river channels and overflow of their embankments in great east Japan earthquake Type de document : texte imprimé Auteurs : Norio Tanaka, Auteur ; Junji Yagisawa, Auteur ; Satoshi Yasuda, Auteur Année de publication : 2012 Article en page(s) : pp. 269-279 Note générale : Hydraulique Langues : Anglais (eng) Mots-clés : Tsunami propagation in river channels Overtopping flow Meandering of channel Great east Japan earthquake Résumé : The tsunami caused by the Great East Japan Earthquake on 11 March 2011, with a magnitude of 9.0, broke most of the sea embankment and coastal vegetation belt and caused catastrophic damage to people and buildings in the Tohoku and Kanto regions of Japan. A field survey was conducted to elucidate the damage to river embankments and their hinterlands (residential area) by tsunami propagation in river channels and overtopping of embankments. Two, three, and four rivers in Iwate Pref., Miyagi Pref., and the Kanto region, respectively, were selected for the field investigation. In the hinterlands, the tsunami came from two directions, coast and river, and the situation, including the evacuation of people, became complex. Therefore, it is necessary to identify locations of river embankments that can be easily overtopped by a tsunami in different tsunami conditions. Tsunami inundation patterns were classified by the river capacity and whether a river or sea embankment was breached or not. This will provide useful information for making new hazard maps and planning new cities. ISSN : 1571-5124 En ligne : http://www.tandfonline.com/doi/full/10.1080/15715124.2012.694365 [article] Characteristics of damage due to tsunami propagation in river channels and overflow of their embankments in great east Japan earthquake [texte imprimé] / Norio Tanaka, Auteur ; Junji Yagisawa, Auteur ; Satoshi Yasuda, Auteur . - 2012 . - pp. 269-279. Hydraulique Langues : Anglais (eng) in JRBM : International journal of river basin management > Vol. 10 N° 3 (Juillet 2012) . - pp. 269-279 Mots-clés : Tsunami propagation in river channels Overtopping flow Meandering of channel Great east Japan earthquake Résumé : The tsunami caused by the Great East Japan Earthquake on 11 March 2011, with a magnitude of 9.0, broke most of the sea embankment and coastal vegetation belt and caused catastrophic damage to people and buildings in the Tohoku and Kanto regions of Japan. A field survey was conducted to elucidate the damage to river embankments and their hinterlands (residential area) by tsunami propagation in river channels and overtopping of embankments. Two, three, and four rivers in Iwate Pref., Miyagi Pref., and the Kanto region, respectively, were selected for the field investigation. In the hinterlands, the tsunami came from two directions, coast and river, and the situation, including the evacuation of people, became complex. Therefore, it is necessary to identify locations of river embankments that can be easily overtopped by a tsunami in different tsunami conditions. Tsunami inundation patterns were classified by the river capacity and whether a river or sea embankment was breached or not. This will provide useful information for making new hazard maps and planning new cities. ISSN : 1571-5124 En ligne : http://www.tandfonline.com/doi/full/10.1080/15715124.2012.694365

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