Characteristics of Short-Period Internal Waves in the Laptev Sea and Adjacent Regions of the Kara and East Siberian Seas Based on Satellite Radar Data during Summer-Autumn Period of 2019

A. V. Kuzmin, I. E. Kozlov*

Marine Hydrophysical Institute of RAS, Sevastopol, Russia

* e-mail: ik@mhi-ras.ru

Abstract

This paper presents the results of short-period internal waves (SIWs) observations in the Laptev Sea and adjacent areas of the Kara and East Siberian Seas based on analysis of satellite synthetic aperture radar (SAR) Sentinel-1 A/B data between July and October 2019. Analysis of 639 SAR images allowed identifying 2081 surface manifestations (SM) of SIWs. Main regions of SIW observations were determined and their spatial characteristics mapped. More than 60 % of registered SIWs were identified in September, and the lowest number of manifestations (9 %) was registered in July. Maximum number of SIW observations was found near the Arctic Cape, over the large area of the continental slope and in the northeastern shelf of the Laptev Sea. It is shown that the total number of SIW identifications in 2019 was much higher than in 2011, and the principal regions of SIW observations expanded. Moreover, new regions of regular SIW generation were determined in the Shokalsky Strait, between the New Siberian Islands and over the deep sea regions. The most intensive generation area was determined north of the Kotelny Island, between 50 m and 200 m isobaths. In this region, the total number of SIW detections exceeded 15 cases. While a significant increase in the number of SIW detections is observed in 2019, the overall range of the values of SIW spatial characteristics in 2019 is almost the same as in 2011.

Keywords

short period internal waves, Laptev Sea, Kara Sea, East Siberian Sea, satellite radar images, tidal currents

Acknowledgments

The study was carried out under state assignment no. FNNN-2021-0010 of FSBSI FRC MHI RAS.

For citation

Kuzmin, A.V. and Kozlov, I.E., 2022. Characteristics of Short-Period Internal Waves in the Laptev Sea and Adjacent Regions of the Kara and East Siberian Seas Based on Satellite Radar Data during Summer-Autumn Period of 2019. Ecological Safety of Coastal and Shelf Zones of Sea, (3), pp. 16–27. doi:10.22449/2413-5577-2022-3-16-27

DOI

10.22449/2413-5577-2022-3-16-27

References

  1. Morozov, E.G. and Pisarev, S.V., 2004. Internal Waves and Polynya Formation in the Laptev Sea. Doklady Earth Sciences, 398(7), pp. 983–986.
  2. Talipova, T.G., Polukhin, N.V., Kurkin, A.A. and Lavrenov, I.V., 2003. [Modelling of Internal Wave Soliton Transformation in the Laptev Sea Shelf]. News Academy of Engineering Sciences A.M. Prokhorov, (4), pp. 3–16 (in Russian).
  3. Zimin, A.V., Kozlov, I.E., Atadzhanova, O.A. and Chapron, B., 2016. Monitoring Short-Period Internal Waves in the White Sea. Izvestiya, Atmospheric and Oceanic Physics, 52(9), pp. 951–960. doi:10.1134/S0001433816090309
  4. Fer, I., Koenig, Z., Kozlov, I.E., Ostrowski, M., Rippeth, T.P., Padman, L., Bosse, A. and Kolas, E., 2020. Tidally Forced Lee Waves Drive Turbulent Mixing along the Arctic Ocean Margins. Geophysical Research Letters, 47(16), e2020GL088083. doi:10.1029/2020GL088083
  5. Marchenko, A.V., Morozov, E.G., Kozlov, I.E. and Frey, D.I., 2021. High-Amplitude Internal Waves Southeast of Spitsbergen. Continental Shelf Research, 227, 104523. doi:10.1016/j.csr.2021.104523
  6. Kozlov, I.E., Kudryavtsev, V.N., Zubkova, E.V., Zimin, A.V. and Chapron, B., 2015. Characteristics of Short-Period Internal Waves in the Kara Sea Inferred from Satellite SAR Data. Izvestiya, Atmospheric and Oceanic Physics, 51(9), pp. 1073–1087. doi:10.1134/S0001433815090121
  7. Zubkova, E.V., Kozlov, I.E. and Kudryavtsev, V.N., 2016. Spaceborne SAR Observations of Short-Period Internal Waves in the Laptev Sea. Sovremennye Problemy Distantsionnogo Zondirovaniya Zemli iz Kosmosa, 13(6), pp. 99–109. doi:10.21046/2070-7401-2016-13-6-99-109 (in Russian).
  8. Kozlov, I.E., Zubkova, E.V. and Kudryavtsev, V.N., 2017. Internal Solitary Waves in the Laptev Sea: First Results of Spaceborne SAR Observations. IEEE Geoscience and Remote Sensing Letters, 14(11), pp. 2047–2051. doi:10.1109/LGRS.2017.2749681
  9. Kagan, B.A. and Timofeev, A.A., 2020. High-Resolution Modeling of Semidiurnal Internal Tidal Waves in the Laptev Sea in the Ice-Free Period: Their Dynamics and Energetics. Izvestiya, Atmospheric and Oceanic Physics, 56(5), pp. 512–521. doi:10.1134/S0001433820050047
  10. Polyakov, I.V., Pnyushkov, A.V., Alkire, M.B., Ashik, I.M., Bauman, T.M., Carmack, E.C., Goszczko, I., Guthrie, J., Ivanov, V.V. [et al.], 2017. Greater Role for Atlantic Inflows on Sea-Ice Loss in the Eurasian Basin of the Artic Ocean. Science, 356(6335), pp. 285–291. doi:10.1126/science.aai8204
  11. Morozov, E.G., Kozlov, I.E., Shchuka, S.A. and Frey, D.I., 2017. Internal Tide in the Kara Gates Strait. Oceanology, 57(1), pp. 8–18. doi:10.1134/S0001437017010106
  12. Kagan, B.A. and Timofeev, A.A., 2020. Dynamics and Energetics of Tides in the Laptev Sea: the Results of High-Resolving Modeling of the Surface Semidiurnal Tide M2. Fundamentalnaya i Prikladnaya Gidrofizika, 13(1), pp. 15–23. doi:10.7868/S2073667320010025 (in Russian).
  13. Polyakov, I.V., Rippeth, T.P., Fer, I., Baumann, T.M., Carmack, E.C., Ivanov, V.V., Janout, M., Padman, L., Pnyushkov, A.V. and Rember, R., 2020. Intensification of Near-Surface Currents and Shear in the Eastern Arctic Ocean. Geophysical Research Letters, 47(16), e2020GL089469. doi:10.1029/2020GL089469
  14. Rippeth, T.P., Vlasenko, V., Stashchuk, N., Scannell, B.D., Green, J.A.M., Lincoln, B.J. and Bacon, S., 2017. Tidal Conversion and Mixing Poleward of the Critical Latitude (an Arctic Case Study). Geophysical Research Letters, 44(24), pp. 12349–12357. doi:10.1002/2017GL075310
  15. Kagan, B.A. and Sofina, E.V., 2022. Effect of Diapycnal Mixing on Climatic Characteristics of the Laptev Sea in the Ice-Free Period. Physical Oceanography, 29(2), pp. 204–219. doi:10.22449/1573-160X-2022-2-204-219

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