Indian summer monsoon variability over last 2000 years inferred from sediment magnetic characteristics in Lugu Lake, southwest China
文献类型：期刊论文
| 作者 | Wang, Xiaohui; Wang, Longsheng; Hu, Shouyun; Ma, Mingming; Wang, Qing; Cui, Buli; Zhan, Chao; Zeng, Lin; Liu, Xianbin; Shen, Ji |
| 刊名 | PALAEOGEOGRAPHY PALAEOCLIMATOLOGY PALAEOECOLOGY
 |
| 出版日期 | 2021 |
| 卷号 | 578 |
| 英文摘要 | Knowledge 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. |
| 源URL | [http://159.226.73.51/handle/332005/20397]  |
| 专题 | 中国科学院南京地理与湖泊研究所 |
| 推荐引用方式 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. |
| 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. |
| 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). |
入库方式： OAI收割
来源：南京地理与湖泊研究所
浏览0
下载0
收藏0
其他版本
除非特别说明，本系统中所有内容都受版权保护，并保留所有权利。