Global S&T Development Trend Analysis Platform of Resources and Environment
DOI | 10.1029/2019JD032225 |
Drought Cycles Over the Last 8,200 Years Recorded in Maar Lake Twintaung, Myanmar | |
Chu, Guoqiang1,2,3; Zhu, Qingzeng1; Sun, Qing4; Su, Youliang5; Xie, Manman1,4; Zaw, Than6; Sein, Kyaing6 | |
2020-05-16 | |
发表期刊 | JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES |
ISSN | 2169-897X |
EISSN | 2169-8996 |
出版年 | 2020 |
卷号 | 125期号:9 |
文章类型 | Article |
语种 | 英语 |
国家 | Peoples R China; Myanmar |
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. |
英文关键词 | leaf wax n-alkanes Maar Lake Twintaung annually laminated sediments compound-specific carbon isotope droughts Holocene |
领域 | 气候变化 |
收录类别 | SCI-E |
WOS记录号 | WOS:000536605500010 |
WOS关键词 | HOLOCENE ASIAN MONSOON ; CLIMATE HISTORY ; YUNNAN PROVINCE ; SUMMER MONSOON ; NORTH CHINA ; N-ALKANES ; RECONSTRUCTION ; PRECIPITATION ; VARIABILITY ; PLEISTOCENE |
WOS类目 | Meteorology & Atmospheric Sciences |
WOS研究方向 | Meteorology & Atmospheric Sciences |
引用统计 | |
文献类型 | 期刊论文 |
条目标识符 | http://119.78.100.173/C666/handle/2XK7JSWQ/280220 |
专题 | 气候变化 |
作者单位 | 1.Chinese Acad Sci, Inst Geol & Geophys, Key Lab Cenozo Geol & Environm, Beijing, Peoples R China; 2.CAS Ctr Excellence Life & Paleoenvironm, Beijing, Peoples R China; 3.Chinese Acad Sci, Innovat Acad Earth Sci, Beijing, Peoples R China; 4.Natl Res Ctr Geoanal, Beijing, Peoples R China; 5.China Earthquake Adm, Inst Geophys, Beijing, Peoples R China; 6.Myanmar Geosci Soc, Yangon, Myanmar |
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). |
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). |
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). |
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