статья в журнале

En

Journal of Geophysical Research: Oceans
eSSN:2169-9291

2025

Khimchenko, E.E.¹

Myslenkova, K.P.²

Myslenkov, S.A.²

Osadchiev, A.A.²

10.1029/2025JC022805

EIYCBS

In this study, we describe in situ measurements of internal waves (IWs) in the Vilkitsky Strait, which connects the Kara and Laptev Seas in the Arctic Ocean. The measurements were conducted at three moorings over three weeks in autumn 2019 and demonstrated the presence of highly intense IWs. Although the study region is located poleward of the M 2 critical latitude (74.5°N) for linear IWs, the measurements revealed the presence of semidiurnal ITWs with periods near 12.4 hr. The vertical displacements of isotherms caused by semidiurnal internal tides reached 10–17 m. In the coastal zone, the shape of ITWs differs significantly from a sinusoidal form due to pronounced nonlinear effects at shallow depths. Field observations clearly show the generation of high-frequency IWs during the propagation of internal tides, as confirmed by the spectral analysis of temperature and isotherm displacement data. Joint analysis of in situ and synthetic aperture radar satellite observations reveals the regular occurrence of intense nonlinear high-frequency IWs with phase velocities of 0.5–1.5 m/s, ranked wavelengths of 100–600 m, periods of 5–120 min, and amplitudes of 4–20 m...

Arctic Ocean, internal waves, mooring data, satellite observations, tides

2-s2.0-105022752426

Tidally Generated Internal Waves in the Vilkitsky Strait, Arctic Ocean / E. E. Khimchenko, I. E. Kozlov, K. P. Myslenkova [et al.] // Journal of Geophysical Research: Oceans. – 2025. – Vol. 130, No. 12. – P. e2025JC022805. – DOI 10.1029/2025JC022805. – EDN EIYCBS.