Research on submesoscale eddy and front near the South Shetland Islands(Antarctic Peninsula) using seismic oceanography data


YANG Shun;SONG Haibin;ZHANG Kun;School of Ocean and Earth Science,Tongji University;State Key Laboratory of Marine Geology,Tongji University;


School of Ocean and Earth Science,Tongji University;State Key Laboratory of Marine Geology,Tongji University;


The submesoscale processes, including submesoscale eddies and fronts, have a strong vertical velocity, can thus make important supplements to the nutrients in the upper ocean. Using legacy multichannel seismic data AP25 of cruise EW9101 acquired northeast of the South Shetland Islands(Antarctic Peninsula) in February 1991, we identified an oceanic submesoscale eddy with the horizontal scale of ~4 km and a steep shelf break front that has variable dip angles from 5° to 10°. The submesoscale eddy is an anticyclonic eddy, which carries warm core water, can accelerate ice shelves melting. The upwelling induced by shelf break front may play an important role in transporting nutrients to the sea surface. The seismic images with very high lateral resolution may provide a new insight to understand the submesoscale and even small-scale oceanic phenomena in the interior.


submesoscale eddy;;shelf break front;;seismic oceanography;;South Shetland Islands


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  • [1] DONG Chong-zhi~(1,2),SONG Hai-bin~(1*),BAI Yang~(1,2),HUANG Xing-hui~(1,2),SONG Yang~(1,2) (1.Key Laboratory of Petroleum Resources Research.,Institute of Geology and Geophysics,Chinese Academy of Sciences,Beijing 100029,China;2.Graduate School of Chinese Academy of Science,Beij ing 100049,China), The latest development of Seismic Oceanography, Progress in Geophysics,
  • [2] HUANG Xing-Hui1,2,SONG Hai-Bin1*,BAI Yang1,2, LIU Bo-Ran1,2,CHEN Jiang-Xin1,2 1 Key Laboratory of Petroleum Resources Research,Institute of Geology and Geophysics, Chinese Academy of Sciences,Beijing 100029,China 2 University of Chinese Academy of Sciences,Beijing 100049,China, Estimation of geostrophic velocity from seismic images of mesoscale eddy in the South China Sea, Chinese Journal of Geophysics,
  • [3] ZHANG Jinchang;LUO Yiming;XING Junhui;Key Laboratory of Ocean and Marginal Sea Geology, South China Sea Institute of Oceanology, Innovation Academy of South China Sea Ecology and Environmental Engineering, Chinese Academy of Sciences;Southern Marine Science and Engineering Guangdong Laboratory(Guangzhou);China-Pakistan Joint Research Center on Earth Sciences,CAS-HEC;Department of Ocean Science and Engineering, Southern University of Science and Technology;Laboratory for Marine Mineral Resources, Qingdao National Laboratory for Marine Science and Technology;Key Laboratory of Submarine Geosciences and Prospecting Techniques, MOE and College of Marine Geosciences, Ocean University of China;, Seismic Images of Shallow Waters over the Shatsky Rise in the Northwest Pacific Ocean, Journal of Ocean University of China,
  • [4] Capet, X;McWilliams, J C;Molemaker, M J;Shchepetkin, A F, Mesoscale to Submesoscale Transition in the California Current System. Part II: Frontal Processes, Journal of Physical Oceanography,


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