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| 罗布泊湖相沉积古气候变化数据集（32-9 ka BP） |
| 点击率:629 |
| 关 键 词 |
罗布泊，湖相沉积，古气候变化 |
| 相关数据 |
Climate variability during the Late Pleistocene is studied from the proxies in core CK-2 drilled from the Luobei Depression (91°03′E, 40°47′N), Lop Nur in the eastern Tarim Basin, Xinjiang, China. Geophysical and geochemical properties, including magnetic susceptibility, granularity, chroma, carbonate content, loss on ignition and trace elements, have been determined to reconstruct the environmental evolution of the area during 32-9 ka BP. The chronology is established by uranium-thorium disequilibrium dating techniques. Our data suggest four paleoclimate stages, indicating glacial variations between cold-humid and warm-arid environments. A period of extreme humidity occurred during 31900-19200 yr BP is attributed the last glacial maximum (LGM). The period was followed by a warm-arid episode during 19200-13500 yr BP. Then a cold-humid interval during 13500-12700 yr BP may correspond to another cooling phases at high latitudes of the Northern Hemisphere. The last stage from 12700 to 9000 yr BP has a trend that the climate turned warm and arid. The Lop Nur region is characterized by particularly humid stadials and arid interstadials. The climate variability in Lop Nur was constrained by global climate change because it is correlated with Dansgaard-Oeschger and Heinrich events, which were observed at the northern high latitudes. The synchroneity of the palaeoclimatic events suggested that cold air activity at the northern high latitudes was the most important factor that influenced the climate evolution in the Lop Nur region. A probable mechanism that involves the migration of westerly winds is proposed to interpret this synchroneity. |
数据说明
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a. Description of Intellectual Property Rights
When using a dataset, please refer to the following documents in the article：
Luo Chao, Peng Zicheng, Yang Dong, et al. A lacustrine record from Lop Nur, Xinjiang, China: Implications for paleoclimate change during Late Pleistocene[J]. Journal of Asian Earth Sciences, 2009, 34: 38-45
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国家科技基础条件平台-国家地球系统科学数据共享平台-东亚古环境科学数据库；
English Expression：
East Asian Paleoenvironmental Science Database, National Earth System Science Data Sharing Infrastructure, National Science & Technology Infrastructure of China
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Acknowledgments in Chinese：
感谢国家科技基础条件平台-国家地球系统科学数据共享平台-东亚古环境科学数据库提供数据支撑。
Acknowledgments in English：
Acknowledgement for the data support from "National Earth System Science Data Sharing Infrastructure, National Science & Technology Infrastructure of China, East Asian Paleoenvironmental Science Database. "
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c. Contacts
Name: Data processing group
Email: eapsd@ieecas.cn
Tel: 029-62336213 |
| 数据集格式 |
Excel |
| 数据分类 |
地质纪录
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湖泊与海洋 |
数据来源
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东亚古环境科学数据库 |
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姓名:
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赵宏丽 |
邮箱: |
zhaohl@ieecas.cn |
| 单位: |
中科院地球环境研究所 |
电话: |
029-62336213 |
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