DOI: 10.1016/j.quascirev.2015.06.009
Scopus记录号: 2-s2.0-84939165803
论文题名: Indian monsoon variations during three contrasting climatic periods: The Holocene, Heinrich Stadial 2 and the last interglacial-glacial transition
作者: Zorzi C. ; Sanchez Goñi M.F. ; Anupama K. ; Prasad S. ; Hanquiez V. ; Johnson J. ; Giosan L.
刊名: Quaternary Science Reviews
ISSN: 2773791
出版年: 2015
卷: 125 起始页码: 50
结束页码: 60
语种: 英语
英文关键词: Core Monsoon Zone
; Heinrich Stadial 2
; Holocene
; Indian summer monsoon
; Last interglacial-glacial transition
; Pollen assemblage
Scopus关键词: Glacial geology
; Incident solar radiation
; Oceanography
; Sea ice
; Solar radiation
; Submarine geology
; Vegetation
; Heinrich Stadial 2
; Holocenes
; Indian summer monsoon
; Last interglacial
; Pollen assemblage
; Atmospheric thermodynamics
; climate variation
; glacial-interglacial cycle
; Heinrich event
; Holocene
; ice sheet
; iceberg
; insolation
; Medieval Warm Period
; monsoon
; paleoclimate
; palynology
; precipitation intensity
; prediction
; sediment core
; teleconnection
; Atlantic Ocean
; Atlantic Ocean (North)
; Bay of Bengal
; Eurasia
; Godavari Basin
; India
; Indian Ocean
; Mahanadi Basin
; Artemisia
英文摘要: In contrast to the East Asian and African monsoons the Indian monsoon is still poorly documented throughout the last climatic cycle (last 135,000 years). Pollen analysis from two marine sediment cores (NGHP-01-16A and NGHP-01-19B) collected from the offshore Godavari and Mahanadi basins, both located in the Core Monsoon Zone (CMZ) reveals changes in Indian summer monsoon variability and intensity during three contrasting climatic periods: the Holocene, the Heinrich Stadial (HS) 2 and the Marine Isotopic Stage (MIS) 5/4 during the ice sheet growth transition. During the first part of the Holocene between 11,300 and 4200 cal years BP, characterized by high insolation (minimum precession, maximum obliquity), the maximum extension of the coastal forest and mangrove reflects high monsoon rainfall. This climatic regime contrasts with that of the second phase of the Holocene, from 4200 cal years BP to the present, marked by the development of drier vegetation in a context of low insolation (maximum precession, minimum obliquity). The historical period in India is characterized by an alternation of strong and weak monsoon centennial phases that may reflect the Medieval Climate Anomaly and the Little Ice Age, respectively. During the HS 2, a period of low insolation and extensive iceberg discharge in the North Atlantic Ocean, vegetation was dominated by grassland and dry flora indicating pronounced aridity as the result of a weak Indian summer monsoon. The MIS 5/4 glaciation, also associated with low insolation but moderate freshwater fluxes, was characterized by a weaker reduction of the Indian summer monsoon and a decrease of seasonal contrast as recorded by the expansion of dry vegetation and the development of Artemisia, respectively. Our results support model predictions suggesting that insolation changes control the long term trend of the Indian monsoon precipitation, but its millennial scale variability and intensity are instead modulated by atmospheric teleconnections to remote phenomena in the North Atlantic, Eurasia or the Indian Ocean. © 2015 Elsevier Ltd. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/59836
Appears in Collections: 过去全球变化的重建
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作者单位: Ecole Pratique des Hautes Etudes, UMR CNRS 5805 EPOC, Université de Bordeaux, Talence, France; Laboratory of Palynology and Paleoecology, French Institute of Pondicherry PB 33 UMIFRE 21 CNRS-MAEE/USR 3330, Pondicherry, India; Université de Bordeaux, UMR CNRS 5805 EPOC, Talence, France; University of New Hampshire, Department of Earth Sciences, James Hall, Durham, NH, United States; Geology and Geophysics, Woods Hole Oceanographic Institution, Woods HoleMA, United States
Recommended Citation:
Zorzi C.,Sanchez Goñi M.F.,Anupama K.,et al. Indian monsoon variations during three contrasting climatic periods: The Holocene, Heinrich Stadial 2 and the last interglacial-glacial transition[J]. Quaternary Science Reviews,2015-01-01,125