Long Wave Height Distribution in the Sea of Japan Caused by Typhoon Hinnamnor Passage: Observations and Modeling

S. Dolgikh1, G. Dolgikh1, A. Zaytsev2, ✉, E. Pelinovsky3, 4

1 V.I. Ilyichev Pacific Oceanological Institute, FEB RAS, Vladivostok, Russian Federation

2 Special Research Bureau for Automation of Marine Researches, FEB RAS, Yuzhno-Sakhalinsk, Russian Federation

3 Institute of Applied Physics, RAS, Nizhny Novgorod, Russian Federation

4 Higher School of Economics, Moscow, Russian Federation

✉ e-mail: aizaytsev@mail.ru

Abstract

Purpose. Observations of sea level oscillations and atmospheric pressure fluctuations on the Russian coast of the Sea of Japan during the passage of Typhoon Hinnamnor on September 5, 2022 are presented. The study is aimed at explaining physical mechanisms of anomalous changes in the sea level at the Preobrazhenie coastal location (Primorye, Russia) during this event.

Methods and Results. Numerical modeling of long waves induced by this typhoon is performed using the NAMI-DANCE computed package. It is demonstrated that the observed filtered records and computed mareograms are in good agreement. Special attention is paid to the sensitivity of the results to even weak variations of the typhoon trajectory and it is shown that the sensitivity is significant.

Conclusions. The phenomenon of anomalous changes in the sea level at the Preobrazhenie coastal location can be explained by the peculiar structure of the coastline. Presumably, focusing of surface waves generated by the changes in atmospheric pressure occurred. This result should be of interest when designing coastal infrastructure of the region. Three scenarios of numerical modeling of typhoon passage were investigated and the results showed that a slight change in the trajectory had a significant effect on the distribution of wave heights along the Russian coast of the Sea of Japan.

Keywords

meteotsunami, field measurements, long waves, numerical modeling, laser nanobarograph

Acknowledgements

The presented results were obtained with the financial support of a grant from the Russian Science Foundation No. 22-17-00121 “The occurrence, development and transformation of geosphere processes of the infrasound range”.

For citation

Dolgikh, S., Dolgikh, G., Zaytsev, A. and Pelinovsky, E., 2023. The Long Wave Height Distribution at the Sea of Japan Caused by Hinnamnor Typhoon Passage: Observations and Modeling. Physical Oceanography, 30(6), pp. 747-759.

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