DOI: 10.1016/j.quascirev.2017.11.021
Scopus记录号: 2-s2.0-85040234445
论文题名: Diatom-based inference of Asian monsoon precipitation from a volcanic lake in southwest China for the last 18.5 ka
作者: Li Y. ; Chen X. ; Xiao X. ; Zhang H. ; Xue B. ; Shen J. ; Zhang E.
刊名: Quaternary Science Reviews
ISSN: 2773791
出版年: 2018
卷: 182 起始页码: 109
结束页码: 120
语种: 英语
英文关键词: Asian monsoon region
; Diatom
; Last glacial maximum
; Precipitation
; Southwestern China
; Volcanic lake
Scopus关键词: Atmospheric thermodynamics
; Glacial geology
; Precipitation (chemical)
; Volcanoes
; Asian monsoon
; Diatom
; Last Glacial Maximum
; Southwestern China
; Volcanic lakes
; Lakes
; climate variation
; crater lake
; diatom
; Heinrich event
; Holocene
; Last Glacial Maximum
; Little Ice Age
; monsoon
; paleoclimate
; precipitation (climatology)
; proxy climate record
; Younger Dryas
; China
; Bacillariophyta
英文摘要: Diatom in the volcanic lake provides proxy evidence for pH changes that are characterized by variations in the percentage of acidophilous diatom species. The information regarding the hydrology of the lake, derived from a previous publication and survey of one year on the lake, indicate that pH is low during the wet season and higher during the dry season. Therefore, variations in lake water pH may be considered as a proxy record for past changes in precipitation. In the sediment, high/low relative abundance of acidophilous diatom species indicates high/low precipitation. The diatom record of the past 18.5 ka BP shows that precipitation decrease during the periods 17.0–15.0, 13.3–11.3, and 0.7–0.3 ka BP corresponding to the Heinrich Event 1 (H1), the Younger Dryas cold event (YD), and the Little Ice Age (LA). A marked precipitation increase between 15.0 and 14.5 ka BP occurred at the end of H1 and before the Bølling-Allerød (BA), which indicates a strong pre-Bølling wetting. The start of the Holocene is recorded at 11.3 ka BP. The climate was the wettest between 11.3 and 7.5 ka BP., then the wetter between 7.5 and 3.4 ka BP. Between 3.4 and 0.7 ka BP, the precipitation decrease in general, but in the period from 1.3 to 0.8 ka BP the precipitation was higher corresponding to the Medieval Warm Period (MWP). Our results support the hypothes that the Indian Summer Monsoon (ISM) was strongest during the Early Holocene. © 2017 Elsevier Ltd Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/112295
Appears in Collections: 气候减缓与适应
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作者单位: State Key Laboratory of Lake Science and Environment, Nanjing Institute of Geography and Limnology, Chinese Academy of Sciences, 73 East Beijing Road, Nanjing, 210008, China; Department of Geography, Faculty of Earth Sciences, China University of Geosciences (Wuhan), Wuhan, 430074, China; Key Laboratory of Plateau Lake Ecology and Global Changes, Yunnan Provincial Key Laboratory of Plateau Geographical Processes and Environmental Changes, College of Tourism and Geoscience, Yunnan Normal University, Kunming, 650500, China
Recommended Citation:
Li Y.,Chen X.,Xiao X.,et al. Diatom-based inference of Asian monsoon precipitation from a volcanic lake in southwest China for the last 18.5 ka[J]. Quaternary Science Reviews,2018-01-01,182