YIC-IR  > 中科院海岸带环境过程与生态修复重点实验室
Indian summer monsoon variability over last 2000 years inferred from sediment magnetic characteristics in Lugu Lake, southwest China
Wang, Xiaohui1; Wang, Longsheng1,2,3,4; Hu, Shouyun2; Ma, Mingming5; Wang, Qing1; Cui, Buli1; Zhan, Chao1; Zeng, Lin1; Liu, Xianbin1; Shen, Ji2
Source PublicationPALAEOGEOGRAPHY PALAEOCLIMATOLOGY PALAEOECOLOGY
ISSN0031-0182
2021-09-15
Volume578Pages:12
KeywordEnvironmental magnetism Rock Magnetism Monsoon precipitation Catchment erosion Lake sediment
DOI10.1016/j.palaeo.2021.110581
Corresponding AuthorWang, Longsheng(52wls@163.com) ; Hu, Shouyun(hu_shouyun@hotmail.com)
AbstractKnowledge of climatic change during the past 2000 years in southwestern China is important for understanding the evolution of the Indian summer monsoon (ISM). For this study, we conducted systematic analysis of magnetic minerals in sediments from Lugu Lake in northwestern Yunnan Province. Magnetic measurements suggest that magnetite dominated the studied magnetic mineral assemblages. Both natural origins and anthropogenic activities are considered to be the sources of the magnetic minerals based on the correlations of chi vs. chi(fd)% and chi(ARM)/chi. The magnetic minerals of natural origins can be attributed to terrestrial detrital input rather than biogenic sources. Combined with diatom and geochemical records, magnetic parameters including chi, chi(fd)%, and Sratio can be used as sensitive indicators of ISM change, and suggest that two significant dry periods occurred in the Medieval Warm Period (MWP, 800-1300 CE) and Roman Warm Period (RWP, 0-400 CE) and two relatively wet intervals in the Dark Ages Cold Period (DACP, 400-800 CE) and Little Ice Age (LIA, 1300-1850 CE). Significant shifts of magnetic parameters in Lugu Lake samples revealed sensitivity to precipitation-controlled catchment erosion. The climatic patterns shown by the magnetic characteristics were generally similar to those in extensive areas dominated by the ISM. We speculate that rainfall caused by the ISM during the last 2000 years may be related to the variations of El Nino/Southern Oscillation (ENSO) and the mean position migration of the ITCZ.
Funding OrganizationNational Natural Science Foundation of China ; Natural Science Foundation of Shandong Province ; Foundation of School and Land Integration Development in Yantai ; Humanity and Social Science Foundation of Ministry of Education of China ; Open Foundation of State Key Laboratory of Loess and Quaternary Geology, Institute of Earth Environment, CAS ; Open Foundation of CAS Key Laboratory of Coastal Environmental Processes and Ecological Remediation, YICCAS ; Key Research and Development Plan of Shandong Province ; Sino-German Center for Research Promotion ; Chinese Academy of Sciences Visiting Professorship for Senior International Scientists
Indexed BySCI
Language英语
WOS KeywordTIBETAN PLATEAU ; GUIZHOU PLATEAU ; EASTERN CHINA ; PRECIPITATION ; CLIMATE ; RECORD ; AGE ; TEMPERATURE ; SEA ; SUSCEPTIBILITY
WOS Research AreaPhysical Geography ; Geology ; Paleontology
WOS IDWOS:000684182500015
Citation statistics
Document Type期刊论文
Identifierhttp://ir.yic.ac.cn/handle/133337/29631
Collection中科院海岸带环境过程与生态修复重点实验室
海岸带生物学与生物资源利用重点实验室_海岸带生物资源高效利用研究与发展中心
Corresponding AuthorWang, Longsheng; Hu, Shouyun
Affiliation1.Ludong Univ, Coast Inst, Yantai 264025, Peoples R China
2.Chinese Acad Sci, Nanjing Inst Geog & Limnol, State Key Lab Lake Sci & Environm, Nanjing 210008, Peoples R China
3.Chinese Acad Sci, Yantai Inst Coastal Zone Res, CAS Key Lab Coastal Environm Proc & Ecol Remediat, Yantai 264003, Peoples R China
4.Chinese Acad Sci, Inst Earth Environm, State Key Lab Loess & Quaternary Geol, Xian 710061, Peoples R China
5.Fujian Normal Univ, Inst Geog, Fuzhou 350007, Peoples R China
Recommended Citation
GB/T 7714
Wang, Xiaohui,Wang, Longsheng,Hu, Shouyun,et al. Indian summer monsoon variability over last 2000 years inferred from sediment magnetic characteristics in Lugu Lake, southwest China[J]. PALAEOGEOGRAPHY PALAEOCLIMATOLOGY PALAEOECOLOGY,2021,578:12.
APA Wang, Xiaohui.,Wang, Longsheng.,Hu, Shouyun.,Ma, Mingming.,Wang, Qing.,...&Shen, Ji.(2021).Indian summer monsoon variability over last 2000 years inferred from sediment magnetic characteristics in Lugu Lake, southwest China.PALAEOGEOGRAPHY PALAEOCLIMATOLOGY PALAEOECOLOGY,578,12.
MLA Wang, Xiaohui,et al."Indian summer monsoon variability over last 2000 years inferred from sediment magnetic characteristics in Lugu Lake, southwest China".PALAEOGEOGRAPHY PALAEOCLIMATOLOGY PALAEOECOLOGY 578(2021):12.
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