[SVC51-P09] The tsunami caused by the volcanic eruption of Izu Ooshima Island on September 18th, 1684
Keywords:Tsunami caused by a volcanic eruption, Izu Ooshima, Historical Tsunami, Cauchy-Poisson's waves
The number of tsunami swept away houses was about 60, so about quarter of total houses were swept away in Niijima village. We made ground height measurement in Motomachi town at a point on the contour line which separates about quarter part of the residential area of Motomachi Town, Izu-Ooshima. We found that the ground height at the point was 13.9 meters (above T.P. 0m). We estimated that the tsunami height was in minimum 13.9 meters, and it is possible, sea water rose up to the level of fifteen meters above the mean sea level.
Acknowledgement: This study was achieved as a part of the commissioned research named “Study on the historical tsunamis in the Pacific coast of Japan (2016)” on disaster prevention for nuclear facilities proposed by the Nuclear Regulation Authority, Japan.