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Drought Cycles Over the Last 8,200 Years Recorded in Maar Lake Twintaung, Myanmar

文献类型：期刊论文

作者Chu, Guoqiang2,3,4; Zhu, Qingzeng4; Sun, Qing5; Su, Youliang6; Xie, Manman4,5; Zaw, Than1; Sein, Kyaing1
刊名JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES
出版日期2020-05-16
卷号125期号:9页码:12
关键词leaf wax n-alkanes Maar Lake Twintaung annually laminated sediments compound-specific carbon isotope droughts Holocene
ISSN号2169-897X
DOI10.1029/2019JD032225
英文摘要The tropical Asian regions are particularly prone to catastrophic droughts due to high temperature and evaporation and their sensitivity to variable oceanic-atmospheric circulation. The extent to which future global warming may intensify droughts in this populous region is a matter of utmost concern. Palaeoclimatic data can help inform scientists learn more about the temporal patterns and drivers of monsoon change over geological timescales. In this paper, we present a new 8,200 year biomarker record preserved in the annually laminated sediments of Maar Lake Twintaung, Myanmar. The delta C-13(27-35) sedimentary record is mainly derived from leaf wax lipids in the lake catchment, which is presently dominated by C-3 vegetation in the modern lake catchment. The delta C-13(27-35) is mainly regulated by plant physiological and biochemical responses to drought stress and, as such, can be used as a proxy of past changes in moisture. The delta C-13(27-35) record reveals distinct decadal-to-centennial-scale droughts superimposed on a trend of gradually decreasing summer monsoon intensity from the mid-Holocene to late Holocene. Within the limits of the dating uncertainties, these decadal-to-centennial-scale droughts are found to be well correlated with the southward shift of the Intertropical Convergence Zone. It highlights thepimportance of the Intertropical Convergence Zone shift (tropical monsoon trough) in regulating monsoon rainfall in the region. In addition, most of the droughts are likely to be linked with active volcanism and solar minima and suggest a coupled process between external drivers and internal climate dynamics.
WOS关键词HOLOCENE ASIAN MONSOON ; CLIMATE HISTORY ; YUNNAN PROVINCE ; SUMMER MONSOON ; NORTH CHINA ; N-ALKANES ; RECONSTRUCTION ; PRECIPITATION ; VARIABILITY ; PLEISTOCENE
资助项目National Key Program of China[2017YFA0603400] ; National Natural Science Foundation of China[41672174] ; National Natural Science Foundation of China[41811530085] ; National Natural Science Foundation of China[41877301]
WOS研究方向Meteorology & Atmospheric Sciences
语种英语
WOS记录号WOS:000536605500010
出版者AMER GEOPHYSICAL UNION
资助机构National Key Program of China ; National Key Program of China ; National Key Program of China ; National Key Program of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Key Program of China ; National Key Program of China ; National Key Program of China ; National Key Program of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Key Program of China ; National Key Program of China ; National Key Program of China ; National Key Program of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Key Program of China ; National Key Program of China ; National Key Program of China ; National Key Program of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China
源URL[http://ir.iggcas.ac.cn/handle/132A11/96698]  
专题地质与地球物理研究所_中国科学院新生代地质与环境重点实验室
通讯作者Chu, Guoqiang; Sun, Qing
作者单位1.Myanmar Geosci Soc, Yangon, Myanmar
2.Chinese Acad Sci, Innovat Acad Earth Sci, Beijing, Peoples R China
3.CAS Ctr Excellence Life & Paleoenvironm, Beijing, Peoples R China
4.Chinese Acad Sci, Inst Geol & Geophys, Key Lab Cenozo Geol & Environm, Beijing, Peoples R China
5.Natl Res Ctr Geoanal, Beijing, Peoples R China
6.China Earthquake Adm, Inst Geophys, Beijing, Peoples R China
推荐引用方式
GB/T 7714		 Chu, Guoqiang,Zhu, Qingzeng,Sun, Qing,et al. Drought Cycles Over the Last 8,200 Years Recorded in Maar Lake Twintaung, Myanmar[J]. JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES,2020,125(9):12.
APA Chu, Guoqiang.,Zhu, Qingzeng.,Sun, Qing.,Su, Youliang.,Xie, Manman.,...&Sein, Kyaing.(2020).Drought Cycles Over the Last 8,200 Years Recorded in Maar Lake Twintaung, Myanmar.JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES,125(9),12.
MLA Chu, Guoqiang,et al."Drought Cycles Over the Last 8,200 Years Recorded in Maar Lake Twintaung, Myanmar".JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES 125.9(2020):12.

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来源：地质与地球物理研究所

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