Acta Geographica Sinica ›› 2003, Vol. 58 ›› Issue (1): 83-89.doi: 10.11821/xb200301010

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The Temperature Variations over the Antarctic Coastal Regions in the Past 250 Years

ZHANG Mingjun1, XIAO Cunde2, LI Zhongqin2, REN Jiawen2, QIN Dahe2, KANG Jiancheng3, LI Jun4   

  1. 1. State Key Laboratory of Frozen Soil Engineering, Cold and Arid Regions Environmental and Engineering Research Institute, CAS, Lanzhou 730000, China;
    2. Cold and Arid Regions Environmental and Engineering Research Institute, CAS, Lanzhou 730000, China;
    3. Chinese Institute of Polar Research, Shanghai 200129, China;
    4. Antarctic Cooperation Research Center and Australian Antarctic Division, Hobart 7001, Australia
  • Received:2002-07-10 Revised:2002-11-20 Online:2003-01-25 Published:2003-01-25
  • Supported by:

    Knowledge Innovation Project of Chinese Academy of Sciences, No.KZCX2-303, Key International Cooperation Project of Ministry of Science and Technology of China, No. 2001DIA50040; National Natural Science Foundation of China, No. 49971021

Abstract:

By comparing the oxygen isotope temperatures recorded by 17 shallow ice cores from the coastal regions of Antarctica, this paper presents the special characteristics of the temperature variations over the Antarctic coastal regions in the past 50, 150 and 250 years. In the past 50 years, the isotopic temperatures recorded in the ice cores at different sites of the Antarctic coastal regions differ great. For instance, although the increasing isotopic temperatures have been reported for many sites studied, some sites show decreasing trends. In the past 150 years, the isotope temperatures in the coastal regions of Antarctica show an alternant-distributing pattern. In the past 250 years, all the ice cores from the coastal regions of Antarctica record the so-called Little Ice Age (LIA).

Key words: Antarctica, ice core, temperature, circumpolar wave, circumpolar circulation