globalchange  > 气候变化与战略
DOI: 10.1016/j.epsl.2020.116149
论文题名:
Inter-relationship and environmental significance of stalagmite δ13C and δ18O records from Zhenzhu Cave, north China, over the last 130 ka
作者: Li Y.; Rao Z.; Xu Q.; Zhang S.; Liu X.; Wang Z.; Cheng H.; Edwards R.L.; Chen F.
刊名: Earth and Planetary Science Letters
ISSN: 0012821X
出版年: 2020
卷: 536
语种: 英语
中文关键词: EASM ; north China ; past 130 ka ; stalagmite ; δ13C ; δ18O
英文关键词: Geology ; Mathematical models ; Atmospheric circulation ; EASM ; East Asian summer monsoon ; Environmental significance ; North China ; past 130 ka ; stalagmite ; Western Chinese Loess Plateau ; Caves ; amplitude ; atmospheric circulation ; igneous geochemistry ; marine isotope stage ; numerical model ; precipitation (chemistry) ; spatial variation ; stalagmite ; trend analysis ; China ; Loess Plateau ; North China Block
英文摘要: There is a vigorous and ongoing debate about the interpretation of the stalagmite δ18O record from east China as an indicator of East Asian summer monsoon (EASM) intensity. This is mainly because of the inconsistent spatial variation of precipitation amount in east China, but the generally consistent variation of precipitation δ18O, on various timescales. However, a direct comparison of a proxy record of precipitation amount with the δ18O record from the same stalagmite has rarely been reported, especially in north China. Here, we present precisely-dated high-resolution stalagmite δ13C and δ18O records for the past 130 ka (1 ka =1000 years) from Zhenzhu (ZZ) Cave in north China. On multi-millennial to orbital timescales, the δ13C and δ18O records exhibit a high degree of in-phase co-variation; however, there are differences in the trend and amplitude of change between various marine isotopic stages (MIS): specifically, MIS5e, MIS5c, MIS5a, MIS3 and MIS1. Modern monitoring results of two years from ZZ Cave, together with a comparison of the δ13C record from the cave with a pedogenic carbonate δ13C record from the western Chinese Loess Plateau (CLP), demonstrate that the δ13C record is a sensitive and reliable indicator of EASM rainfall amount. Considering that variations in both the amount and δ18O of precipitation can be modulated by the atmospheric circulation system, we conclude that the amplitude and trend of the stalagmite δ18O variations from north China are not an absolute indicator of EASM intensity, but rather an indicator of changes in the phase of the EASM. We suggest that stalagmite δ18O records combined with other unambiguous proxy indicators from stalagmites can provide a more comprehensive history of changes of the EASM. © 2020 Elsevier B.V.
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/165107
Appears in Collections:气候变化与战略

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作者单位: College of Resources and Environmental Sciences, Hunan Normal University, Changsha, 410081, China; Key Laboratory of Western China's Environmental Systems (Ministry of Education), College of Earth and Environmental Sciences, Lanzhou University, Lanzhou, 73000, China; College of Resources and Environment, Hebei Key Laboratory of Environmental Change and Ecological Construction, Hebei Normal University, Shijiazhuang, 050024, China; Institute of Global Environmental Change, Xi'an Jiaotong University, Xi'an, 710049, China; Department of Earth Sciences, University of Minnesota, Minneapolis, MN 55455, United States; School of Geography, Nanjing Normal University, Nanjing, 210023, China; Key Laboratory of Alpine Ecology, CAS Center for Excellence in Tibetan Plateau Earth Sciences, Institute of Tibetan Plateau Research, Chinese Academy of Sciences, Beijing, 100101, China

Recommended Citation:
Li Y.,Rao Z.,Xu Q.,et al. Inter-relationship and environmental significance of stalagmite δ13C and δ18O records from Zhenzhu Cave, north China, over the last 130 ka[J]. Earth and Planetary Science Letters,2020-01-01,536
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