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
PY - 2012/9/1
Y1 - 2012/9/1
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
UR - http://www.scopus.com/inward/record.url?scp=84872857783&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=84872857783&partnerID=8YFLogxK
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 -