| Paleotemperature changes over the past 3000 years in eastern Beijing,China:A reconstraction based on Mg/Sr records in a stalagmite |
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| 引用本文： | MAZhibang LIHongchun 等. Paleotemperature changes over the past 3000 years in eastern Beijing,China:A reconstraction based on Mg/Sr records in a stalagmite[J]. 科学通报(英文版), 2003, 48(4): 395-400. DOI: 10.1007/BF03183237 |
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| 作者姓名： | MAZhibang LIHongchun 等 |
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| 作者单位： | [1]InstituteofGeologyandGeophysics,ChineseAcademyofSciences,Beijing100029,China [2]DepartmentofEarthSciences,UniversityofSouthernCalifornia.LosAngeles,CA90089-0740,USA |
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| 摘 要： | The Mg/Sr ratio in a stalagmite,whic is directly proportinonal to DMg/Ca,the solid-liquid distribution coefficient of Mg,is proposed as a geochemical thermometer to estimate paleotemperature changes,The paleotemperature change in eastern Beijing over the past 3000 years has been reconstructed by using this thermometer in the stalagmite ZFFS-1 from Jingdong Cave,The records can be divided into two periods:3000-2000 aBP,cool and wet ,the air temperature averaging 9.8℃;and 2000aBP-present, hot and dry,the air temperature being 1℃ higher than the mean value (11.7℃) of the past 3000 years ,During 500-200 aBP,the air temperature was about 1.2℃ lower than that of the present,corresponding to the Little Ice Age Europe Like δ^18O and δ^C ,Mg/Sr (or DMg/Ca) reflects and obviously warming trend of the past 200 years,These results are supported by historic recods.
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| 关 键 词： | 北京 京东溶洞 石笋 Mg/Sr记录 古气温 测年 3000年 |
| 收稿时间： | 2002-10-09 |
Paleotemperature changes over the past 3000 years in eastern Beijing,China: A reconstraction based on Mg/Sr records in a stalagmite |
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| Zhibang Ma,Hongchun Li,Ming Xia,Tehlung Ku,Zicheng Peng,Yushu Chen,Zhaofeng Zhang. Paleotemperature changes over the past 3000 years in eastern Beijing,China: A reconstraction based on Mg/Sr records in a stalagmite[J]. Chinese science bulletin, 2003, 48(4): 395-400. DOI: 10.1007/BF03183237 |
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| Authors: | Zhibang Ma Hongchun Li Ming Xia Tehlung Ku Zicheng Peng Yushu Chen Zhaofeng Zhang |
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| Affiliation: | MA Zhibang1, LI Hongchun2, XIA Ming1, KU Tehlung2, PENG Zicheng3, CHEN Yushu4 & ZHANG Zhaofeng3 1. Institute of Geology and Geophysics, Chinese Academy of Sciences, Beijing 100029, China; 2. Department of Earth Sciences, University of Southern California, Los Angeles, CA90089-0740, USA; 3. Department of Earth and Space Science, University of Science and Technology of China, Hefei 230026, China; 4. Beijing Foshan Tourist Service Centre, Beijing 101201, China |
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| Abstract: | The Mg/Sr ratio in a stalagmite, which is directly proportional toD Mg/ca, the solid-liquid distribution coefficient of Mg, is proposed as a geochemical thermometer to estimate paleotemperature changes. The paleotemperature change in eastern Beijing over the past 3000 years has been reconstructed by using this thermometer in the stalagmite ZFFS-1 from Jingdong Cave. The records can be divided into two periods: 3000–2000 aBP, cool and wet, the air temperature averaging 9.8°C; and 2000 aBP-present, hot and dry, the air temperature being 1°C higher than the mean value (11.7°C) of the past 3000 years. During 500–200 aBP, the air temperature was about 1.2°C lower than that of the present, corresponding to the Little Ice Age in Europe. Like δ18O and δ13C, Mg/Sr (orD Mg/Ca) reflects an obviously warming trend of the past 200 years. These results are supported by historic records. |
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| Keywords: | Beijing Jingdong Cave Mg/Sr record paleotemperature stalagmite. |
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