ENERGY INTERACTION OF THE JETS AND EDDIES OF ANTARCTIC CIRCUMPOLAR CURRENT IN THE NEAR-SURFACE LAYER OF THE SOUTHERN OCEAN
Abstract
Kinetic energy six jets of the Antarctic Circumpolar Current (ACC), and of synoptic eddies generated by these jets is studied in application to the near-surface layer of the Antarctic Circle on the base of the satellite altimeter data during 1993–2015. The main results of the study were as follows: a) prevalence of the energy of middle jet of the Subantarctic Current over energy of the rest ACC jets in the whole of the Antarctic Circle; b) five times excess of the mean energy of jets proper over the mean summary (cyclones plus anticyclones) energy of eddies; c) two times excess of mean energy of cyclonic eddies over energy of anticyclones.
References
- Arhan M., Speich S., Messager Ch., Dencausse G., Fine R., and Boye M. Anticyclonic and cyclonic eddies of subtropical origin in the subantarctic zone south of Africa. J. Geophys. Res., 2011, Vol. 116, pp. 11004, doi: 10.1029/ 2OMJC 007140.
- Kamenkovich V.M. Baroclinic instability of large scale currents. In: Synoptic eddies in the ocean, Eds. V.M. Kamenkovich, M.N. Koshlyakov, A.S. Monin., Leningrad: Hydrometeoizdat, 1987, pp. 138–160.
- Koshlyakov M.N., Grachev Yu.M., Mikhailichenko Yu.G., Sazhina T.G., and Yaremchuk M.I. Generation of synoptic oceanic eddies in the POLIMODE region. Okeanologiya, 1984, Vol. 24, No. 1, pp. 5–14.
- Koshlyakov M.N., Tarakanov R.Y., and Savchenko D.S. Energy exchange between jets of the Antarctic Circumpolar Current and synoptic eddies in the Drake Passage and Scotia Sea. Okeanology, 2018, Vol. 58, No. 3, pp. 347–357.
- Kostianoy A.G., Ginzburg A.I., Lebedev S.A., Frankingnoulle M., and Delille B. Fronts and Mesoscale Variability in the Southern Indian Ocean as Inferred from Altimetric Data of Topex/Poseidon and ERS-2. Oceanology, 2003, Vol. 58, No. 3, pp. 347–357.
- Mirabel’ A.P. and Monin A.S. Geostrophic turbulence. Izv. Akad. Nauk SSSR, 1980, Vol. 16, No.10, pp. 1011–1023.
- Pedlosky J. Geophysical Fluid Dynamics. New York, Heidelberg, Berlin: Springer-Verlag, 1982.
- Sokolov S. and Rintoul S.R. The circumpolar structure and distribution of the Antarctic Circumpolar Current fronts. Part 1: Mean circumpolar parts. J. Geophys. Res., 2009, Vol. 114, pp. 11018, doi: 10.1029/2008J005108.
- Tarakanov R.Y. On the revealing closed circulations on satellite maps of dynamic topography of the ocean surface. Physics of Atmosphere and Ocean, 2019, Vol. 55, No. 5, (in the press).
Transfer of copyrights occurs on the basis of a license agreement between the Author and Shirshov Institute of Oceanology, RAS
