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Russian Meteorology and Hydrology

, Volume 43, Issue 3, pp 178–187 | Cite as

Icebergs in the Southern Ocean and Factors Defining Their Distribution

  • Yu. A. Romanov
  • N. A. Romanova
Article
  • 22 Downloads

Abstract

Using the data of ~58 000 ship observations of Antarctic icebergs in 1947–2014, the map of average summertime concentration of icebergs (namely, of their number within a circle with the radius of 15 nautical miles) in the Southern Ocean was constructed. The main features of the iceberg distribution are revealed, and their possible reasons are investigated. It is shown that in the open ocean sea currents play a key role in the iceberg distribution. Wind effects are pronounced when ocean currents are weak or absent. According to the authors’ estimates, wind plays a decisive role only in the formation of one wide quasimeridional tongue of high iceberg concentration in the Weddell Sea. It is difficult to assess the impact of Antarctic glaciers’ productivity on the iceberg distribution, because currents, wind, and breaking and jamming of icebergs in shallow water areas cause their rapid redistribution. The clear physical explanation of the main features of iceberg concentration distribution on the constructed map indicates that it provides a rather real pattern.

Keywords

Southern Ocean icebergs glacier productivity currents wind 

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References

  1. 1.
    Icebergs of the World Ocean, Ed. by I. K. Popov and V. A. Voevodin (Gidrometeoizdat, Saint Petersburg, 1996) [in Russian].Google Scholar
  2. 2.
    N. N. Antipov and A. V. Klepikov, “Large-scale Pattern of Ross Gyre Water Circulation,” Trudy AANII, No. 447 (2007) [in Russian].Google Scholar
  3. 3.
    N. N. Antipov and A. V. Klepikov, “Cyclonic Gyres in the Marginal Seas of East Antarctica,” in The Arctic and Antarctica, No. 2 (Nauka, Moscow, 2003) [in Russian].Google Scholar
  4. 4.
    V. Kh. Buinitskii, Sea Ice and Icebergs in the Antarctica (LGU, Leningrad, 1973) [in Russian].Google Scholar
  5. 5.
    A. I. Korotkov and V. E. Fedyakov, “Advection and Morphology of Ice in the Weddell Gyre,” in Results of Antarctic Studies (Gidrometeoizdat, Saint Petersburg, 1995) [in Russian].Google Scholar
  6. 6.
    A. I. Korotkov, V. E. Fedyakov, and V. E. Korablev, “Detailed Pattern of Iceberg Distribution in the Southern Ocean,” Problemy Arktiki i Antarktiki, No. 3 (2014) [in Russian].Google Scholar
  7. 7.
    M. N. Koshlyakov, I. M. Belkin, V. M. Radikevich, and Yu. A. Romanov, “Icebergs at 67° S in the Pacific Sector of the Antarctic in February-March 1992,” Okeanologiya, No. 6, 34 (1993) [Oceanology, No. 6, 34 (1993)].Google Scholar
  8. 8.
    A. P. Lisitsin, Ice Sedimentation in the World Ocean (Nauka, Moscow, 1994) [in Russian].Google Scholar
  9. 9.
    V. S. Nazarov, “Antarctic Water Ice,” Okeanologiya, No. 6 (1962) [in Russian].Google Scholar
  10. 10.
    A. A. Romanov, Ice Conditions for Navigation in the Southern Ocean, WMO. Marine Meteorology and Related Problems, No. 35 (Saint Petersburg, 1996) [in Russian].Google Scholar
  11. 11.
    Yu. A. Romanov, “Brief History of Observations of Antarctic Icebergs, Main Objectives of Iceberg Investigation, and Iceberg Observation Data Acquisition Centers,” in Touching the Ocean: 100 Years of V. G. Kort, Ed. by E. G. Morozov and V. G. Neiman (Moscow-Izhevsk, 2013) [in Russian].Google Scholar
  12. 12.
    Yu. A. Romanov and A. I. Korotkov, “Seasonal Variations in Iceberg Abundance in Eastern Antarctica (50°-70° S, 0°-120° E),” Dokl. Akad. Nauk, No. 2, 379 (2001) [Dokl. Earth Sci., No. 5, 379 (2001)].Google Scholar
  13. 13.
    Yu. A. Romanov and N. A. Romanova, “Icebergs in the Australian Sector of the Antarctic Region,” Dokl. Akad. Nauk, No. 4, 402 (2005) [Dokl. Earth Sci., No. 4, 402 (2005)].Google Scholar
  14. 14.
    Yu. A. Romanov and N. A. Romanova, “Concentration of Icebergs in the Atlantic Sector of the Antarctic Region and Its Seasonal Changes,” Dokl. Akad. Nauk, No. 6, 392 (2003) [Dokl. Earth Sci., No. 8, 393 (2003)].Google Scholar
  15. 15.
    R. Yu. Tarakanov, Pattern of Large-scale Circulation of Antarctic Waters, Abstract of Thesis of Doctoal Dissertation in Mathematical Physics (IO RAN, Moscow, 2015) [in Russian].Google Scholar
  16. 16.
    B. I. Shil'nikov, “Icebergs,” in Atlas of Antarctica, Vol. 2 (1969) [in Russian].Google Scholar
  17. 17.
    K. R. Arrigo and G. L. van Dijken, “Impact of Iceberg C-19 on Ross Sea Primary Production,” Geophys. Res. Lett., 30 (2003).Google Scholar
  18. 18.
    J. Ballantyne, A Multidecadal Study of the Number of Antarctic Icebergs Using Scatterometer Data, Brigham Young University Online Report (2002), http://www.mers.byu.edu/long/paper/conf/IGARSS/.CrossRefGoogle Scholar
  19. 19.
    J. Ballantyne and D. G. Long, “A Multidecadal Study of the Number of Antarctic Icebergs Using Scatterometer Data,” in Proceedings of the International GeoScience and Remote Sensing Symposium, Toronto, Canada, 24-28 June 2002.Google Scholar
  20. 20.
    N. L. Bindoff, M. A. Rosenberg, and M. J. Warner, “On the CircuSation and WaSer Masses over the AntarcSic Continental Slope and Rise between 80° and 150° E,” Deep-Sea Res., Part II, 47 (2000).Google Scholar
  21. 21.
    C. J. Burrow, “Icebergs in the Southern Ocean,” New Zealand Geograph., 32 (1976).Google Scholar
  22. 22.
    G. Dencausse, M. Arhan, and S. Speich, “Routes of Agulhas Ring in the Southeaster Cape Basin,” Deep-Sea Res., Part I, 57 (1989).Google Scholar
  23. 23.
    J. A. Dowdeswell and J. L. Bamber, “Keel Depths of Modern Antarctic Icebergs and Implication for Sea-floor Scouring in the Geological Records,” Mar. Geol., No. 1-4, 243 (2007).Google Scholar
  24. 24.
    R. E. Ettle, “The Drift of Icebergs under Wind AcSion,” Arctic, 27 (1974).Google Scholar
  25. 25.
    R. M. Gladstone and G. Bigg, “Satellite Tracking of Icebergs in the Weddell Sea, Antarctic,” Science, 14 (2002).Google Scholar
  26. 26.
    J. Gutt and A. Starmang, “Quantification ofIceberg Impact and Benthic Recolonisation Patterns in the Weddell Sea (Antarctica),” Polar Biol., 24 (2001).Google Scholar
  27. 27.
    K. Matsumoto, “An Iceberg Drift and Decay Model to Compute the Ice-rafted Debris and Iceberg MeltwaSer Flux: Application to the Interglacial North Atlantic,” Paleoceanography, No. 6, 11 (1996).Google Scholar
  28. 28.
    M. S. MaCartney and K. A. Donohue, “A Deep Cyclonic Gyre in the AusSralian-Antarctic BaSin,” Progr. Oceanogr., 75 (2007).Google Scholar
  29. 29.
    O. Orheim, “Physical Characteristics and Life Expectancy of Tabular Antarctic Icebergs,” Ann. Glaciol., 1 (1980).Google Scholar
  30. 30.
    A. N. Orsi, W. D. Nowlin Jr., and T. Whitworth, “On the Circulation and Stratification of the Weddell Gyre,” Deep-Sea Res., Part I, 40 (1993).Google Scholar
  31. 31.
    A. N. Orsi and U. Ryan, Locations of the Various Fronts in the Southern Ocean, Catalogue of Australian Antarctic and Subantarctic Metadata (Aust. Antarct. Data Center, Kingston, Tasmania, 2001), http://aadcaps.maps. aad.gov.aaadc/metadata/metadatadirect.cfm?mdAMD/AU/southern_ocean_fronts.Google Scholar
  32. 32.
    M. N. Raphael, G. J. Marshall, J. Turner, et al., “The Amundsen Sea Low,” Bull. Amer. Meteorol. Soc., 97 (2016).Google Scholar
  33. 33.
    S. Reeves, K. Stuart, and B. Lamber, The Antarctic Iceberg Tracking Database - 2009, http://www.scp.dyu.edu/ data/ic eb erg/datab as e.Google Scholar
  34. 34.
    E. Rignot, S. Jackobs, J. Mouginot, and B. Scheuchl, “Ice Shelf Melting around Antarctica,” Science, 341 (2013).Google Scholar
  35. 35.
    Yu. A. Romanov, N. A. Romanova, and P. Romanov, “Distribution of Icebergs in the Atlantic and Indian Ocean SecSors of the Antarctic Region and Its Possible Links with ENSO,” Geophys. Res. Lett., 35 (2008).Google Scholar
  36. 36.
    Yu. A. Romanov, N. A. Romanova, and P. Romanov, “Shape and Size of Antarctic Icebergs Derived from Ship Observation Data,” Antarctic Sci., No. 1, 24 (2012).Google Scholar
  37. 37.
    M. P. Schodlok, H. H. Helmer, G. Rohardt, et al., “Weddell Sea Iceberg Drift: Five Years of Observations,” J. Geophys. Res., 111 (2006).Google Scholar
  38. 38.
    J. N. Schwarz and M. P. Schodlok, “Impact of Drifting Icebergs on Surface Phytoplankton Biomass in the Southern Ocean: Ocean Colors Remote Sensing and in Situ Iceberg Tracking,” Deep Sea Res., Part I, No. 10, 56 (2009).Google Scholar
  39. 39.
    T. Silva, G. Bigg, and K. Nicholls, “The Contribution of Giant Icebergs to the Southern Ocean Freshwater Flux,” J. Geophys. Res., 111 (2006).Google Scholar
  40. 40.
    K. L. Smith, “Free-drifting Icebergs in the Southern Ocean: An Overview,” Deep Sea Res., Part II, 58 (2011).Google Scholar
  41. 41.
    K. L. Smith, B. H. Robinson, J. J. Helly, et al., “Hot Spot of Chemical and Biological Enrichment in the Weddell Sea,” Science, 317 (2007).Google Scholar
  42. 42.
    B. Spandonide, Iceberg Water Transportation from Antarctic to Australia, PhDThesis (Univ. Tasmania, 2012).Google Scholar
  43. 43.
    K. Stuart and D. Long, “Tracking Large Tabular Icebergs Using the Ku-band Microwave Scatterometer,” Deep Sea Res., No. 11-12, 58 (2011).Google Scholar
  44. 44.
    J. Tournadre, N. Bouhier, F. Girard-Ardhuin, and F. Remy, “Antarctic Iceberg Distribution 1992-2014,” J. Geophys. Res., 121 (2016).Google Scholar
  45. 45.
    P. Wadhams, “Winter Observations on Iceberg Frequencies and Sizes in the South Atlantic Ocean,” J. Geophys. Res., No. 4, 93 (1988).Google Scholar
  46. 46.
    W. F. Weeks and W. J. Campbell, “Icebergs as a Fresh-water Source: An Appraisal,” J. Glaciol., No. 63, 12 (1973).Google Scholar
  47. 47.
    C. Wesche and W. Dierking, “Near-costal Circum-Antarctic Iceberg Size Distributions Determined from Synthetic Aperture Radar Images,” Remote Sens. Environ., 156 (2015).Google Scholar
  48. 48.
    C. Wesche, D. Jansen, and W. Dierking, “Calving Fronts of Antarctica: Mapping and Classification,” Remote Sens., 5 (2013).Google Scholar
  49. 49.
    N. W. Young, D. Turner, G. Hyland, and R. N. Williams, “Near-costal Iceberg Distributions in East Antarctica,” Ann. Glaciol., 27 (1998).Google Scholar

Copyright information

© Allerton Press, Inc. 2018

Authors and Affiliations

  1. 1.Shirshov In stitute of OceanologyRussian Academy of SciencesMoscowRussia

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