Open AccessANALYSIS OF WAVE RUN UP DYNAMICS AT JOGEHAMA BEACH JAPAN
Author(s) -
Naoyuki Inukai,
Masaya Shinohara,
Tokimitsu Ochiai,
Hiroshi Yamamoto
Publication year - 2018
Publication title -
proceedings of conference on coastal engineering/proceedings of ... conference on coastal engineering
Language(s) - English
Resource type - Journals
eISSN - 2156-1028
pISSN - 0589-087X
DOI - 10.9753/icce.v36.papers.68
Subject(s) - geology , wave model , cusp (singularity) , numerical models , wave height , computer simulation , geodesy , seismology , meteorology , numerical modeling , geography , oceanography , geophysics , simulation , geometry , engineering , mathematics
The big wave suddenly arrived at the beach, Niigata prefecture Japan in May 2014. And three children were carried off to the sea by the wave, though they played on the beach. When the accident occurred, the significant wave heights was 1.2m, and the wave period was 7.9 seconds. The beach characteristic topography has the cusp topography and steep slope. We tried to understand the reason why this accident occurred. Firstly, we reproduced the wave condition when the accident occurred. Secondary, we made the survey to understand the geographic feature of the beach. After the survey, we obtained the geographic data for the numerical simulation from the aerial photograph which were taken by UAV (Unmanned aerial vehicle). Finally, we comprehended the wave dynamics on the beach by the numerical simulation. We simulated the wave dynamics by the horizontal two dimensional numerical model and the vertical two dimensional numerical model.