Abstract. The results of an analysis of sea level and atmospheric pressure fluctuations based on observations conducted over 12.5 days with one-minute intervals from the jack-up drilling rig Sakhalinskaya, which is installed on the eastern shelf of Sakhalin Island in the Nyysky Bay area at a depth of 25–30 m, are presented. Measurements were made using a digital cable system equipped with piezo-quartz pressure sensors. Spectral analysis of sea level variations revealed pronounced peaks at periods close to the diurnal and semidiurnal tidal harmonics, as well as low-frequency maxima interpreted as manifestations of shelf seiches and seiches of Nyysky Bay. It was shown that infragravity waves were recorded within the minute-range periods, some of which may transform into edge waves propagating along the coast. The analysis of atmospheric pressure fluctuations revealed spectral maxima in the range from several minutes to tens of minutes, which can be associated with internal gravity waves and acoustic–gravity waves in the atmosphere. During stormy periods, wave activity intensified, and an almost continuous spectrum with a distinct mode structure was formed. It was established that the spectral density slope of atmospheric pressure fluctuations in the considered period range is close to the power of –1/3, which differs from previously published results and is explained by the fact that the analyzed periods occur within the range of energy input to the lower atmosphere.

For citation: Kovalev D.P., Kovalev P.D., Borisov A.S., Zarochnitsev V.S. Features of sea level and atmospheric pressure fluctuations on the eastern shelf of Sakhalin Island. Geosistemy perehodnykh zon = Geosystems of Transition Zones, 2026, vol. 10, No. 2, p. 189–204. (In Russ.).
https://doi.org/10.30730/gtrz.2026.10.2.189-204, https://www.elibrary.ru/cvzjzp

Для цитирования: Ковалев Д.П., Ковалев П.Д., Борисов А.С., Зарочинцев В.С. Особенности колебаний уровня моря и атмосферного давления на восточном шельфе острова Сахалин. Геосистемы переходных зон, 2026, т. 10, № 2, с. 189–204.
https://doi.org/10.30730/gtrz.2026.10.2.189-204, https://www.elibrary.ru/cvzjzp

1. Parker B.B. Tidal analysis and prediction. Maryland: Silver spring, 2007, 378 p. http://dx.doi.org/10.25607/OBP-191

2. Kowalik Z., Polyakov I. Tides in the Sea of Okhotsk. Journal of Physical Oceanography. 1998,28:1389–1409. https://doi.org/10.1175/1520-0485(1998)028<1389:TITSOO>2.0.CO;2

3. Andreev A. Intra-seasonal variability of sea level on the southwestern Bering Sea shelf and its impact on the East Kamchatka and East Sakhalin currents. Remote Sensing. 2023,15(20):4984. https://doi.org/10.3390/rs15204984

4. Rouvinskaya E.A., Kurkina O.E., Kurkin A.A. Spatial distribution of amplitudes of internal tidal waves on the north-eastern shelf of Sakhalin. Doklady Earth Sciences. 2023,509(1):148–152. https://doi.org/10.1134/S1028334X22601778

5. Kovalev D.P., Kovalev P.D., Borisov A.S., Kirillov K.V. Waves in the marine area near Cape Svobodny (south-eastern part of Sakhalin Island). Geosystems of Transition Zones. 2024,8(3):201–211. https://doi.org/10.30730/gtrz.2024.8.3.201-211

6. Rabinovich A.B. [Long ocean gravity waves: Trapping, resonance, and leaking]. Saint Petersburg: Hydrometeoizdat, 1993, 326 p. (In Russ.).

7. Ohshima K.I., Wakatsuchi M., Fukamachi Y., Mizuta G. Near-surface circulation and tidal currents of the Okhotsk Sea observed with satellite-tracked drifters. Journal of Geophysical Research. 2002,107(C11):3195. https://doi.org/10.1029/2001JC001005

8. Kurkin A.A., Kovalev D.P., KurkinaO.E., Kovalev P.D. Features of long waves in the area of Cape Svobodny (south-eastern part of Sakhalin Island, Russia) during the passage of cyclones. Russian Journal of Earth Sciences. 2023,23(3):ES3003. https://doi.org/10.2205/2023ES000852

9. Kovalev D.P., Kurkin A.A., Kovalev P.D., Zarochintsev V.S. Investigation of tidal and subtidal variations in sea level close to the southeastern coast of Sakhalin Island using two-year time series. Russian Journal of Earth Sciences. 2024,24(3):ES3001. https://doi.org/10.2205/2024ES000908

10. Squire V.A., Kovalev D.P., Kovalev P.D. Aspects of surface wave propagation with and without sea ice on the south-eastern shelf of Sakhalin Island. Estuarine, Coastal and Shelf Science. 2021,251:107227. https://doi.org/10.1016/j.ecss.2021.107227

11. Manilyuk Yu.V., Lazorenko D.I., Fomin V.V. [Study of seiche oscillations in adjacent bays using Sevastopol and Karantinnaya bays as an example]. Morskoi gidrofizicheskii zhurnal [Marine Hydrophysical Journal]. 2020,36(3):261–276. https://doi.org/10.22449/0233-7584-2020-3-261-276. (In Russ.).

12. Sudol'skii A.S. [Dynamic phenomena in water bodies]. Leningrad: Gidrometeoizdat, 1991, 263 p. (In Russ.)

13. Kovalev D.P., Kovalev P.D., Shevchenko G.V., Borisov A.S., et al. Study on harbor oscillation-like waves in an open port on the Sakhalin Island shelf. Ocean Engineering. 2025,334:121625. https://doi.org/10.1016/j.oceaneng.2025.121625

14. Kovalev P.D., Kovalev D.P. [Techniques for studying hazardous marine phenomena in the coastal zone of the ocean]. Vladivostok: Dal'nauka, 2010, 152 p. (In Russ.).

15. Tozer B., Sandwell D.T., Smith W.H.F., Olson C., Beale J.R., Wessel P. Global bathymetry and topography at 15 arc seconds: SRTM15+. Earth and Space Science. 2019,6(10):1847–1864. https://doi.org/10.1029/2019EA000658

16. Plekhanov F.A., Kovalev D.P. The complex program of processing and analysis of time-series data of sea level on the basis of author''s algorithms. Geoinformatika. 2016,1:44–53. (In Russ.).

17. Kovalev D.P. [Kyma computer program: Russian Federation patent RU 2018618773]. No. 2018612587; appl. 20.03.2018; publ. 19.07.2018. (In Russ.).

18. Liu P.L.-F., Monserrat S., Marcos M., Rabinovich A.B. Coupling between two inlets: Observation and modeling. Journal of Geophysical Research. 2003,108(C3):3069. https://doi.org/10.1029/2002JC001478

19. Murty T.S. [Seismic sea waves: Tsunamis]: Transl. from English. Leningrad: Gidrometeoizdat, 1981, 447 p. (In Russ.).

20. Herbers T.H.C., Elgar S., Guza R.T. Generation and propagation of infragravity waves. Journal of Geophysical Research. 1995,100(C12):24863–24872. https://doi.org/10.1029/95jc02680

21. Holman R.A. Infragravity energy in the surf zone. Journal of Geophysical Research. 1981,86(C7):6442–6450. https://doi.org/10.1029/jc086ic07p06442

22. Lippmann T.C., Holman R.A., Bowen A.J. Generation of edge waves in shallow water. Journal of Geophysical Research. 1997,102(C4):8663–8679. https://doi.org/10.1029/96jc03722

23. Zeitlin V. Resonant excitation of trapped coastal waves by free inertia-gravity waves. Cambridge: INI, 2013, 36 p.

24. Ursell F. Edge waves on a sloping beach. Proceedings of the Royal Society of London. 1952,214(1116):79–97. https://www.jstor.org/stable/i206706

25. Holman R.A., Bowen, A.J. Longshore structure of infragravity wave motions. Journal of Geophysical Research. 1984,89(C4):6446–6452. https://doi.org/10.1029/jc089ic04p06446

26. Gossard E., Hooke W. [Waves in the atmosphere]. Moscow: Mir, 1978, 532 p. (In Russ.).

27. Nappo C.J. An introduction to atmospheric gravity waves. San Diego: Academic Press, 2002, 276 p. (International Geophysics; 102).

28. Stull R.B. An introduction to boundary layer meteorology. Dordrecht: Kluwer Academic Publishers, 1988, 666 p.

29. Bosart L.F., Cussen J.P. Gravity wave phenomena accompanying east coast cyclogenesis. Monthly Weather Review. 1973,101(5):446–454. doi:10.1175/1520-0493(1973)101<0446:GWPAEC>2.3.CO;2

30. Viana S., Yague C., Maqueda G., Morales G. Study of the surface pressure fluctuations generated by waves and turbulence in the nocturnal boundary layer during SABLES2006 field campaign. Fisica de la Tierra. 2007,19(19):55–71.

31. Fiedler F., Panofsky H.A. Atmospheric scales and spectral gaps. Bulletin of the American Meteorological Society. 1970,51:1114–1120. https://doi.org/10.1175/1520-0477(1970)051<1114:ASASG>2.0.CO;2

32. Ramis C., Monserrat S. Ondas gravitatorias troposfericas. Estudio de su estabilidad mediante modelos de capas. Fisica de la Tierra. 1991,3:245–282.

33. Grigor'ev G.I. Acoustic-gravity waves in the Earth atmosphere (review). Izvestiya Vysshikh Uchebnykh Zavedenii. Radiofizika / Radiophysics and Quantum Electronics. 1999,42(1):1–21. (In Russ.). doi:10.1007/BF02677636

34. Blanc E., Farges T., Le Pichon A., Heinrich P. Ten year observations of gravity waves from thunderstorms in Western Africa. Journal of Geophysical Research. 2014,119(11):6409–6418. doi:10/1002/2013JD020499

35. Francis S.H. A theory of medium-scale travelling ionospheric disturbances. Journal of Geophysical Research. 1974,79(34):5245–5260. doi:10.1029/JA079i034p05245

36. Gershman B.N., Grigor'ev G.I. Traveling ionospheric disturbances – A review. Radiophysics and Quantum Electronics. 1968,11:1–13. https://doi.org/10.1007/BF01033534

37. Kunitsyn V.E., Suraev S.N., Akhmedov R.R. [Modeling of the propagation of acoustic-gravity waves in the atmosphere from various surface sources]. Vestnik Moskovskogo Universiteta. Seriya 3. Fizika. Astronomiya = Moscow University Physics Bulletin. 2007,2:59–63. (In Russ.).

38. Vadas S.L., Fritts D.C. Thermospheric responses to gravity waves: Influences of increasing viscosity and thermal diffusivity. Journal of Geophysical Research. 2005,110:D15103. doi:10/1029/2004JD005574

39. Borchevkina O.P. [Lidar and satellite sounding of tropospheric and ionospheric disturbances generated by acoustic-gravity waves]: thesis … Cand. of Sci. (Phys.-Math.). Immanuel Kant Baltic Federal University, Kaliningrad, 2017. (In Russ.)

40. Koch S.E., Golus R.E. A mesoscale gravity wave event observed during CCOPE. Monthly Weather Review. 1988,116(12):2527–2592.

41. Romanova N.N., Yakushkin I.G. [Internal gravity waves in the lower atmosphere and sources of their generation: a review]. Izvestiya Rossiiskoi Akademii Nauk. Fizika Atmosfery i Okeana. 1995,31(2):163–186. (In Russ.)

42. Fritts D.C. Shear excitation of atmospheric gravity waves. Pt I. Journal of the Atmospheric Sciences. 1982,39(9):1936–1952.

43. Fritts D.C. Shear excitation of atmospheric gravity waves. Pt II. Journal of the Atmospheric Sciences. 1984,41(4):524–537.

44. Shakina N.P. [Hydrodynamic instability in the atmosphere]. Leningrad: Gidrometeoizdat, 1990, 308 p. (In Russ.)

45. Vadas S.L. Horizontal and vertical propagation, and dissipation of gravity waves in the thermosphere from lower atmospheric and thermospheric sources. Journal of Geophysical Research: Space Physics. 2007,112:A06305. https://doi.org/10.1029/2006ja011845

46. Gavrilov N.M., Kshevetskii S.P. Dynamical and thermal effects of nonsteady nonlinear acoustic-gravity waves propagating from tropospheric sources to the upper atmosphere. Advances in Space Research. 2015,56(9):1833–1843. https://doi.org/10.1016/j.asr.2015.01.033

47. Gossard E.E. Spectra of atmospheric scalars. Journal of Geophysical Research: Space Physics. 1960,65(10):3339–3351. https://doi.org/10.1029/JZ065i010p03339

48. Herron T.J., Tolstoy I., Kraft D.W. Atmospheric pressure background fluctuations in the mesoscale range. Journal of Geophysical Research. 1969,74(6):1321–1329. https://doi.org/10.1029/JB074i006p01321

49. Golitsyn G.S. [Dynamics of natural phenomena: climate, planetary atmospheres, convection]. Moscow: Fizmatlit, 2004, 344 p. (In Russ.).