TY - JOUR
T1 - Investigation of tsunami propagation characteristics in river and on land induced by the great east Japan earthquake 2011
AU - Adityawan, Mohammad Bagus
AU - Roh, Min
AU - Tanaka, Hitoshi
AU - Mano, Akira
AU - Udo, Keiko
N1 - Funding Information:
The video images of the tsunami were provided by the Tohoku Regional Bureau, the Ministry of Land, Infrastructure and Transport, the Second Regional Japan Coast Guard Headquarters, the Japan Coast Guard, and Dr. Tatsuya Nakamura, the Tohoku Kosei Nenkin Hospital. Moreover, precious field data were provided by the Sendai River and National Highway Office, the Ministry of Land, Infrastructure and Transport, and the River Division, and the Miyagi Prefectural Office. The authors would like to thank the financial support provided by the Grant-in-Aid for Scientific Research from JSPS (No. 23-01367, No. 21-360230, No. 22360193), Grant-in-Aid for Scientific Research from the River Environmental Fund (REF) in charge of the Foundation of River and Watershed Environmental Management (FOREM), and the Collaborative Research Fund, Disaster Prevention Research Institute, Kyoto University, as well as Assistance for Technological Development, Tohoku Construction Association. The first author is a Postdoctoral Fellow granted by JSPS (No. P11367).
PY - 2012/9
Y1 - 2012/9
N2 - The Great East Japan Earthquake of March 11, 2011 generated a massive tsunami wave that severely damaged coastal areas of Japan. Furthermore, the wave propagated into rivers, causing damage upstream far from shore. Videos recorded during this tsunami event were collected and analyzed to estimate the celerity of tsunami propagation in river and on the land. The result shows good comparison with estimation based on theoretical approaches that use water level measurement data. It was found that the tsunami celerity in river is approximately 25-30 km/h, and moved upstream with gradual deceleration. However, wave celerity on land was decreased significantly due to debris and dominant ground friction. The propagation trend in river mainstream and floodplain behaves differently in the location where the mainstream is not parallel to the embankment. Tsunami discharge and velocity in a river induced by tsunami wave were estimated based on continuity equation using the measured water level variation along the Sunaoshi River. The maximum estimated discharge is approximately 152 m3/s with the maximum velocity of 1.4 m/s.
AB - The Great East Japan Earthquake of March 11, 2011 generated a massive tsunami wave that severely damaged coastal areas of Japan. Furthermore, the wave propagated into rivers, causing damage upstream far from shore. Videos recorded during this tsunami event were collected and analyzed to estimate the celerity of tsunami propagation in river and on the land. The result shows good comparison with estimation based on theoretical approaches that use water level measurement data. It was found that the tsunami celerity in river is approximately 25-30 km/h, and moved upstream with gradual deceleration. However, wave celerity on land was decreased significantly due to debris and dominant ground friction. The propagation trend in river mainstream and floodplain behaves differently in the location where the mainstream is not parallel to the embankment. Tsunami discharge and velocity in a river induced by tsunami wave were estimated based on continuity equation using the measured water level variation along the Sunaoshi River. The maximum estimated discharge is approximately 152 m3/s with the maximum velocity of 1.4 m/s.
KW - Sendai Plain
KW - The Great East Japan earthquake
KW - celerity
KW - tsunami propagation
KW - velocity
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U2 - 10.1142/S1793431112500339
DO - 10.1142/S1793431112500339
M3 - Article
AN - SCOPUS:84872857783
VL - 6
JO - Journal of Earthquake and Tsunami
JF - Journal of Earthquake and Tsunami
SN - 1793-4311
IS - 3
M1 - 1250033
ER -