Accumulation and temperature changes in Princess Elizabeth Land, Antarctica in the past 250 years  

作　　者：张明军 李忠勤 秦大河 效存德 杨惠安 康建成 李军 

机构地区：[1]State Key Laboratory of Frozen Soil Engineering, Cold and Arid Regions Environmental and Engineering Research Institute, Chinese Academy of Sciences, Lanzhou 730000, China [2]Chinese Institute of Polar Research, Shanghai 200129, China [3]Antarctic Cooperation Research Center and Australian Antarctic Division, Hobart 7001, Australia

出　　处：《Progress in Natural Science:Materials International》2001年第7期47-50,共4页自然科学进展·国际材料（英文版）

基　　金：Project supported by the National Natural Science Foundation of China (Grant No. 49771022 and 49971021), the Chinese Academy of Sciences (Grant No. KZ951-A1-205 and KZCX2-303) and the Ministry of Science and Technology of China (Grant No.98-927-01).

摘　　要：A 50 m firn core drilled in Princess Elizabeth Land, Antarctica, during the 1996/1997 Chinese First Antarctic Inland Expedition, has been measured for d 0 and major ions. Based on these data, the features of the climate change in the investigated region in the past 250 years have first been studied. In the past 250 years, the change trend of climate in this region can be divided into two periods by the year 1860. Both the temperature and accumulation rate display increasing trend before 1860, while after 1860, the decreasing trend of the temperature is obvious but the change of the accumulation rate is not clear. Although both the temperature and the accumulation rate are increasing in the past 50 years, they are not the highest values in the past 250 years. So it is clear that the climate change in this region during this period does not reflect recent global warming.A 50 m firn core drilled in Princess Elizabeth Land, Antarctica, during the 1996/1997 Chinese First Antarctic Inland Expedition, has been measured for d 0 and major ions. Based on these data, the features of the climate change in the investigated region in the past 250 years have first been studied. In the past 250 years, the change trend of climate in this region can be divided into two periods by the year 1860. Both the temperature and accumulation rate display increasing trend before 1860, while after 1860, the decreasing trend of the temperature is obvious but the change of the accumulation rate is not clear. Although both the temperature and the accumulation rate are increasing in the past 50 years, they are not the highest values in the past 250 years. So it is clear that the climate change in this region during this period does not reflect recent global warming.

关 键 词：ANTARCTIC ice sheet FIRN core ACCUMULATION rate temperature. 

分 类 号：P531[天文地球—古生物学与地层学]