Observation and Modeling of Nonlinear Internal Waves on the Sea of Japan Shelf

Observation and Modeling of Nonlinear Internal Waves on the Sea of Japan Shelf Full article

Journal

Journal of Marine Science and Engineering
ISSN: 2077-1312

Output data

Year: 2024, Volume: 12, Number: 8, Article number : 1301, Pages count : 20 DOI: 10.3390/jmse12081301

Tags

nonlinear internal waves; numerical simulation; Green–Naghdi equations; thermistor string; shelf; the Sea of Japan

Authors

Yaroshchuk Igor ¹ , Liapidevskii Valery ² , Kosheleva Alexandra ¹ , Dolgikh Grigory ¹ , Pivovarov Alexander ¹ , Samchenko Aleksandr ¹ , Shvyrev Alex ¹ , Gulin Oleg ¹ , Korotchenko Roman ¹ , Khrapchenkov Fedor ¹

Affiliations

1	V.I. Il’ichev Pacific Oceanological Institute, Far Eastern Branch, Russian Academy of Sciences, 690041 Vladivostok, Russia
2	Lavrentyev Institute of Hydrodynamics, Siberian Branch, Russian Academy of Sciences, 630090 Novosibirsk, Russia

This paper presents a discussion on observations of nonlinear internal waves (NLIWs) in the coastal zone of the Sea of Japan, based on the mooring of thermostring clusters in different seasons of 2022. For statistical evaluation of the frequency of event occurrence and determination of NLIW movement direction, we use our observations of the past 12 years. We present the NLIW structures, observed in spring, summer, and autumn of 2022, which are typical for this shelf area. Two types of nonlinear waves are described—solitary and undular bores, with or without strong vertical mixing behind the front. We demonstrate spatial transformation of an undular bore as it moves over the shelf. A mathematical model based on the second-order shallow water approximation is proposed for numerical simulation. To simplify calculations, the authors limit themselves to two- and three-layer shallow water models. We investigate the possibility of spatiotemporal reconstruction of internal nonlinear structures between thermostrings using experimental data and proposed models. The authors show that at distances of up to several kilometers between thermostrings, the wave fields of strongly nonlinear and nonstationary structures can be successfully reconstructed. Water flow induced by NLIWs can be reconstructed from the data of even one thermostring.

Yaroshchuk I. , Liapidevskii V. , Kosheleva A. , Dolgikh G. , Pivovarov A. , Samchenko A. , Shvyrev A. , Gulin O. , Korotchenko R. , Khrapchenkov F.
Observation and Modeling of Nonlinear Internal Waves on the Sea of Japan Shelf
Journal of Marine Science and Engineering. 2024. V.12. N8. 1301 :1-20. DOI: 10.3390/jmse12081301 WOS РИНЦ OpenAlex

Submitted:	Jul 3, 2024
Accepted:	Jul 30, 2024
Published print:	Aug 1, 2024

Web of science:	WOS:001304807800001
Elibrary:	68565363
OpenAlex:	W4401207141

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