Numerical Simulation of Secondary Undulation Occurred in Kominato Fishing Port of Amami Oshima Island During the Summer Season

A numerical simulation reveals that secondary undulation, a phenomenon triggered by typhoons, significantly elevates water levels in ports during summer, exacerbating flood risks. This study focuses on Kominato Fishing Port in Amami Oshima Island, where typhoon-induced secondary undulations were successfully reproduced using computational modeling for the period of June 18-20, 2012. The findings highlight a 6-minute oscillation mode and elucidate the propagation characteristics of oceanic long waves responsible for these undulations. This research underscores the importance of understanding such dynamics to mitigate disaster risks in coastal areas vulnerable to typhoon impacts.

TANIGAWA, M., YAMASHIRO, T., KAMIUTO, M., KAKO, S., & HAMAZOE, K. (2018). NUMERICAL SIMULATION OF SECONDARY UNDULATION OCCURRED IN KOMINATO FISHING PORT OF AMAMI OSHIMA ISLAND DURING THE SUMMER SEASON. Journal of Japan Society of Civil Engineers, Ser. B3 (Ocean Engineering), 74(2), I. https://doi.org/10.2208/jscejoe.74.i_533