Effect on water mass structure in West Japan by the 2011 Tohoku earthquake tsunami

The 2011 Tohoku earthquake tsunami devastated the coastal zone in east Japan. It was also reached to the Pacific coast in west Japan area. The most reports have been limited reaching time and height of tsunami. However, it is important to consider the effect on water mass structure by tsunami waves from the viewpoint of sustainable fisheries industry or conservation of marine ecosystem. In this study, from the analysis for monitoring data in Shikoku and Seto Inland Sea, temporal breaking the stratification and the appearance of high-frequency component were confirmed