Sovremennye problemy distantsionnogo zondirovaniya Zemli iz kosmosa, 2014, Vol. 11, No. 3, pp. 19-27
Gradient-vorticity waves in the Ulleung Basin of the Sea of Japan
A.E. Zvereva
1 , V.R. Foux
2
1 N.N.Zubov State Oceanographic Institute, Saint Petersburg, Russia
2 Saint Petersburg State University, Saint Petersburg, Russia
Phenomenological analysis of Southern JES (the Japan/East Sea) SLA altimetry maps show that in sea level fields in synoptic and seasonal variability range along with known quasi-stationary fluxes of the Warm Tsushima Current regional thermo-dynamical features are mostly defined by static-progressive waves. For dynamics features study altimetry sea level relief data from 1992 to 2013 was statistically assessed. The Ulleung Basin sea level oscillations mean, dispersion and spectra spatiotemporal distributions as well as wavelet spectra in terms of high nonstationarity were derived. Studies have shown that low-frequency oscillations mostly belong to the seasonal, annual, quasibiennial and 4 year spectra bands. Harmonic and spectral analyses allowed to assess regional large-scale wave perturbations parameters and to find out that in the range of synoptic and seasonal variability of the hydrodynamic fields water regime is determined by static-progressive waves that are generated by capturing the energy of the main currents due to the topography of this region.
Keywords: Rossby waves, kinematics, altimetry, wavelet analysis, complex empirical orthogonal functions, static-progressive waves, Sea of Japan/ East Sea, Ulleung/Tsushima Basin
Full textReferences:
- Belonenko T.V., Koldunov V.V., Staritsyn D.K., Foux V.R., Shilov I.O., Izmenchivost’ urovnya Severo-Zapadnoy chasti Tikhogo okeana (North-Western Pacific Ocean sea-level variability) SMIO press, St.Petersburg, 2009, 309 p.
- Belonenko T.V., Koldunov V.V., Foux V.R., O stoyache-postupatelnykh volnah Rossbi v more i okeane (On static-progressive Rossbi waves in seas and oceans), Vestnik SPSU, 2012, S.7, Vol.2, pp. 91-103.
- Belonenko T.V., Zakharchuk E.A., Foux V.R., Gradientno-vikhrevye volny v okeane (Ocean gradient-vorticity waves), St.Petersburg: SPSU, 2004, 215 p.
- Le Blond P., Mysak L., Volny v okeane (Waves in the ocean), Moscow: Mir, 1981, vol.1, 2, 853 p.
- Pedlosky J., Geofizicheskaya gidrodinamika (Geophysical hydrodynamics), Moscow: Mir, Vol.1, 2, 1984, 811 p.
- Trusenkova O.O., Sezonnye i mezhgodovye izmeneniya zyrkulyazii vod Yaponskogo moray (seasonal and interannual variation of the Sea of Japan water circulation), Dalnevostochnye morya, Vol.1, Okeanologicheskie issledovaniya, Moscow: Nauka, 2007, pp. 280-306.
- Foux V.R., Gidrodinamicheskiye osnovy interpretazii altimetricheskih s’emok morskoy poverkhnosti (Hydrodynamical basics of sea surface altimetry data interpretations), Sea level oscillations, St.Petersburg: Gidrometeoizdat, 2003.
- Chang K.-I., Hogg N.G., Suk M.-S., Byun S.-K., Kim Y.-G., Kim K., Mean flow and variability in the southwestern East Sea, Deep-Sea Research I 49, 2002, pp. 2261-2279.
- Dwi Susanto R., Zheng Q., Yan X.-H., Complex Singular Value Decomposition Analysis of Equatorial Waves in the Pacific observed by TOPEX/Poseidon Altimeter, Jour. of Atm. and Oceanic Tech., American Meteor. Society, 1998, Vol. 15, pp. 764-774.
- Hirose N., Ostrovskii A.G. Quasi-biennial variability in the Japan Sea, J. Geophys. Res., 2000, Vol. 105, C12028, pp. 14011-14027.
- Kim C.-H., Yoon J.-H. A numerical modeling of the upper and the intermediate layer circulation in the East Sea, J. of Oceanography, 1999, Vol. 55, pp. 327-345.
- Senjyu T., Shin H.-R., Yoon J.-H., Nagano Z., An H.-S., Byun S.-K., Lee C.-K., Deep flow field in Japan/East Sea as deduced from direct current measurements, Deep-Sea Research II 52, 2005, pp. 1726-1741.
- Teague W.J., Tracey K.L., Watts D.R., Book J.W., Chang K.-I., Hogan P.J., Mitchell D.A., Suk M.-S., Wimbush M., Yoon J.-H., Observed deep circulation in the Ulleung Basin, Deep-Sea Research II 52, 2005, pp. 1802-1826.
- Volkov D.L, Belonenko T.V., Foux V.R. Puzzling over the dynamics of the Lofoten Basin – a sub-Arctic hot spot of ocean variability, Geophys. Res. Let., 2013, Vol. 40, pp. 738-743.