Journal of Earth System Science

, 111:281 | Cite as

Oceanic eddies in synthetic aperture radar images

  • Andrei Yu Ivanov
  • Anna I. Ginzburg


Continuous observations since 1991 by using synthetic aperture radar (SAR) on board the Almaz1, ERS-1/2, JERS-1, and RADARSAT satellites support the well-known fact that oceanic eddies are distributed worldwide in the ocean. The paper is devoted to an evaluation of the potential of SAR for detection of eddies and vortical motions in the ocean. The classification of typical vortical features in the ocean detected in remote sensing images (visible, infrared, and SAR) is presented as well as available information on their spatial and temporal scales. Examples of the Almaz-1 and ERS-1/2 SAR images showing different eddy types, such as rings, spiral eddies of the open ocean, eddies behind islands and in bays, spin-off eddies and mushroom-like structures (vortex dipoles) are given and discussed. It is shown that a common feature for most of the eddies detected in the SAR images is a broad spectrum of spatial scales, spiral shape and shear nature. It is concluded that the spaceborne SARs give valuable information on ocean eddies, especially in combination with visible and infrared satellite data.


Oceanic eddies vortical motions synthetic aperture radar (SAR) SAR images 


  1. Alpers W and Huhnerfuss H 1989 The damping of ocean waves by surface films: a new look at an old problem;J. Geophys. Res. 94 pp. 6251–6265CrossRefGoogle Scholar
  2. Brown R A 1980 Longitudinal instabilities and secondary flows in the planetary boundary layer: A Review;Rev. of Geophysics and Space Physics,18 (3) pp. 683–697Google Scholar
  3. Cheney R E 1981 A search for cold water ring. In:Spaceborne synthetic aperture radar for oceanography. The Johns Hopkins University Press) pp. 161–170Google Scholar
  4. Eldevik T and Dysthe K B 2000 Short frontal waves: can frontal instabilities generate small scale spiral eddies? In:Oceanic fronts and related phenomena (Konstantin Fedorov International Memorial Symposium), International Oceanographic Commission Workshop Report No 159, Moscow, GEOS, pp. 112–117Google Scholar
  5. Fedorov K N 1986The Physical Nature of Oceanic Fronts. (Springer Verlag), 333 p.Google Scholar
  6. Fedorov K N and Ginsburg A I 1986 “Mushroom-like” currents (vortex dipole) in the ocean and in laboratory tank;Annales Geophysicae 4, B, 5. pp. 507–516Google Scholar
  7. Fedorov K N and Ginsburg A I 1992The near-surface layer of the ocean. (VSP, Utrecht, The Netherlands) 259 p.Google Scholar
  8. Fu L-L and Holt B 1982 Seasat views oceans and sea ice with synthetic-aperture radar;JPL Publication 81–120, JPL California Institute of Technology, Pasadena, California, 200 p.Google Scholar
  9. Gairola R M, Basu S and Pandey P C 2001 Eddy detection over southern Indian Ocean using TOPEX/Poseidon altimeter data;Marine Geodesy,24 pp. 107–121CrossRefGoogle Scholar
  10. Ginzburg A I 1992 Nonstationary eddy motions in the ocean;Oceanology (English translation),32, 6, pp. 689–694Google Scholar
  11. Grodsky S, Kudryavtsev V and Ivanov A 2000 Quasisynchronous observations of the Gulf Stream frontal zone with Almaz-1 SAR and measurements taken on board the R/V Akademik Vernadsky;The Global Atmosphere and Ocean Systems,7, pp. 249–272Google Scholar
  12. Ivanov A Yu 1999 Oceanographic results from the ALMAZ-1 mission. In:Ocean surface layer: Physical processes and remote sensing. Nizhnii Novgorod, IAP RAS. v.2, pp. 408–438 (in Russian).Google Scholar
  13. Ivanov A Yu and Litovchenko K T 1998 Ocean phenomena seen from ALMAZ-1. In:Remote Sensing of the Pacific Ocean by satellites (ed) R A Brown. (Australia: Earth, Ocean & Space Publishing), pp. 93–110Google Scholar
  14. Johannessen J A, Digranes G, Espedal H, Johannessen O M, Samuel P, Browne D and Vachon P 1995 SAR Ocean Feature Catalogue. Noordwijk: European Space Agency Publication Division (ESA SP-1174), 106 p.Google Scholar
  15. Johannessen J A, Shuchman R A, Digranes G, Lyzenga D R, Waskerman C, Johannessen O M and Vachon P W 1996 Coastal ocean fronts and eddies imaged with ERS-1 synthetic aperture radar;J. Geophys. Res. 101 pp. 6651–6667CrossRefGoogle Scholar
  16. Johannessen J A, Shuchman R A, Johannessen O M, Davidson K L and Lyzenga D 1991 Synthetic aperture radar imaging of upper ocean circulation and wind fronts;J. Geophys. Res. 96 pp. 10,411–10,422Google Scholar
  17. Johannessen O M, Johannessen J A, Svendsen E, Shuchman R A, Campbell W J and Josberger E G 1987 Ice edge eddies in the Fram Strait marginal ice zone;Science 236 p. 427CrossRefGoogle Scholar
  18. Kamenkovich V M, Koshlyakov M N and Monin A S 1987Synoptic eddies in the ocean (Leningrad, Gidrometeoizdat) 511 p.Google Scholar
  19. Lavrova O Yu and Sabinin K D 2000 SAR observation of dynamic processes in the Bering Strait. Paper presented at the PORSEC 2000 Conference, Goa, India, 5–8 December 2000Google Scholar
  20. Lichy D E, Mattie M G and Mancicni L J 1981 Tracking of a warm water ring. In:Spaceborne synthetic aperture radar for oceanography (The Johns Hopkins University Press) pp. 171–184Google Scholar
  21. Lobanov V, Mitnik L and Dubina V 2000 Visualization of mesoscale and small-scale water dynamics in the Okhotsk Sea using satellite images. Paper presented at the15th Int. Symp. on the Okhotsk Sea and Sea Ice, 6–9 February 2000, Mombetsu, Hokkaido, JapanGoogle Scholar
  22. Lyzenga D R 1991 Interaction of short surface and electromagnetic waves with ocean fronts;J. Geophys. Res.,96 pp. 10,765-10,772Google Scholar
  23. Mayers S D and Basu S 1999 Eddies in the eastern Gulf of Alaska from TOPEX/Poseidon altimetry;J. Geophys. Res. 104 pp. 13,333-13,343Google Scholar
  24. Munk W, Armi L, Fisher K and Zachariasen F 2000 Spirals on the sea.Proc. Royal Society. London A,456, pp. 1217–1280CrossRefGoogle Scholar
  25. Oceanography from the Space Shuttle, 1989. A Joint Project of the University Corporation for Atmospheric Research and the Office of Naval Research, US Navy, 200 p.Google Scholar
  26. Pattiaratchi C, James A and Collins M 1987 Island wakes and headland eddies: A comparison between remotely sensed data and laboratory experiments;J. Geophys. Res. 92 (C1) pp. 783–794Google Scholar
  27. Scott J C 1986 Surface films in oceanography. ONRL Workshop Report C-11-86. Off. Nav. Res., London, pp. 19–34Google Scholar
  28. Scully-Power P 1986 Navy oceanographer Shuttle observations. STS 41-G Mission Report. Naval Underwater Systems Center, NUSC Technical Document 7611.Google Scholar
  29. Stapleton N, Aicken W, Dovey P and Small J 2000 A multisensor approach to monitor oceanography in the Gulf of Oman and northern Arabian Sea;Proceedings of the ERS-ENVISAT Symposium, Gothenburg, Sweden, 16–20 October 2000 (ESA SP-461/CD-ROM).Google Scholar
  30. Vesecky J F and Stewart R H 1982 The observation of ocean surface phenomena using imagery from the SEASAT synthetic aperture radar: An assessment;J. Geophys. Res. 87 (C5), pp. 3397–3430Google Scholar
  31. Vyas N K and Andharia H I 1987 Determination of the velocity of the ocean gyres through synthetic aperture radar;Int. J. of Remote Sensing,8 (2), pp. 243–249CrossRefGoogle Scholar

Copyright information

© Indian Academy of Sciences 2002

Authors and Affiliations

  • Andrei Yu Ivanov
    • 1
  • Anna I. Ginzburg
    • 1
  1. 1.P P Shirshov Institute of OceanologyRussian Academy of SciencesMoscowRussia

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