地理科学

地理科学 ›› 2003, Vol. 23 ›› Issue (5): 560-563.doi: 10.13249/j.cnki.sgs.2003.05.560

• 论文 • 上一篇    下一篇

南极伊利莎白公主地250年来海、陆盐离子浓度特征

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

  1. 1. 西北师范大学地理与环境科学学院, 甘肃兰州 730070;
    2. 中国科学院寒区旱区 环境与工程研究所, 甘肃兰州 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:2002-11-11 修回日期:2003-01-15 出版日期:2003-09-20 发布日期:2003-09-20
  • 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);科技部社会公益项目(2001DIA50040);国家自然科学基金(49971021,40071025)

Concentration Variation Features of Sea Salt Ions and Non Sea Salt Ions in the Firn Core Recovered from Princess Elizabeth Land, East Antarctica

ZHANG Ming-Jun1,2, REN Jia-Wen1, XIAO Cun-De1, LI Zhong-Qin1, QIN Da-He1, KANG Jian-Cheng3, LI Jun4   

  1. 1. Geography and Environment College, Northwest Normal University, Lanzhou, Gansu 730070;
    2. Cold and Arid Regions Environmental and Engineering Research Institute, Chinese Academy of Sciences, Lanzhou, Gansu 730000;
    3. Chinese Institute of Polar Research, Shanghai 200129;
    4. Antarctic Cooperation Research Center and Australian Antarctic Division, Hobart 7001, Australia
  • Received:2002-11-11 Revised:2003-01-15 Online:2003-09-20 Published:2003-09-20

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13

摘要： 中国首次南极内陆冰盖考察获得的50m冰芯的雪冰化学资料研究表明:南极伊利莎白公主地海盐离子浓度季节变化特征明显,为冰芯定年提供了可靠的依据。伊利莎白公主地雪冰中Cl-、Na+和Mg2+等海盐离子浓度与南极冰盖其它地方相当,而Ca2+含量异常的高,可能与局地较强的陆地源有关。近150年来,伊利莎白公主地海盐离子浓度具有明显升高的趋势,可能是整个南半球100多年来升温的结果。

Abstract: A 50m firn core drilled in Princess Elizabeth Land, Antarctica, during the 1996/1997 Chinese First Antarctic Inland Expedition, has been measured for major ions.Based on the high quality of the seasonal variations of major ions, the firn core was dated with errors within ?3 years.The 51.85 m firn core record extends for 251 years (A.D.1745-1996).The results of the glaciochemistry data of the firn core show that the mean concentrations of Cl-, Na+ and Mg2+ are similar to those reported from other coastal areas in East Antarctica.However, mean concentrations of Ca2+ are much higher than those reported from other regions, this anomaly phenomenon may be related to the strong local terrestrial sources.It is found that the variations of three kinds of sea salt ions (Cl-, Na+ and Mg2+) in the past 150 years show very similarly rising trends, which may be the results the Southern Hemisphere warming in the past century.

中图分类号: 

  • P426.63+5(166.1)