地理学报

地理学报 ›› 2003, Vol. 58 ›› Issue (1): 83-89.doi: 10.11821/xb200301010

• 论文 • 上一篇    下一篇

南极冰盖边缘近250年来气温变化的地域分布特征

张明军1, 效存德2, 李忠勤2, 任贾文2, 秦大河2, 康建成3, 李军4   

  1. 1. 中国科学院寒区旱区环境与工程研究所冻土工程国家重点实验室，兰州 730000;
    2. 中国科学院寒区旱区环境与工程研究所，兰州 730000;
    3. 中国极地研究所，上海 200129;
    4. Antarctic CRC and Australian Antarctic Division, Hobart, 7001, Australia.
  • 收稿日期:2002-07-10 修回日期:2002-11-20 出版日期:2003-01-25 发布日期:2003-01-25
  • 作者简介:张明军 (1975-), 男, 甘肃宁县人, 博士生, 主要从事冰川与环境演变研究。E-mail: zhangmj@ns.lzb.ac.cn
  • 基金资助:

    中国科学院知识创新工程项目 (KZCX2-303); 科技部国际合作重点项目 (2001CB711003); 国家自然科学基金资助项目 (49971021)

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

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被引次数

6

摘要：

通过对南极冰盖边缘17支浅冰芯氧同位素的对比研究，揭示了整个南极冰盖边缘近50年来、150年来和250年来气温变化的地域分布特征。近50年来，南极冰盖边缘的氧同位素温度有的呈现上升趋势，有的呈现下降趋势，但气温变化的地域规律性不强；近150年来，南极冰盖边缘的同位素温度的升高和降低趋势大致呈现出一种交替分布的态势；近250年来，南极冰盖边缘所有的氧同位素温度都记录了小冰期的降温事件。气温的这种地域分布特征可能是南大洋独特的环流形式——环南极波 (ACW) ——在特殊地形 (如大的冰盆) 影响下，在南极冰盖边缘的表现形式，并且随着时间尺度的不同，南大洋独特的环流形式 、ACW和地形的影响强度各异。

关键词: 南极, 冰芯, 气温, 地形, 环南极波, 绕极流

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