Arid
DOI10.2113/gssgfbull.185.1.3
Orbitally-induced changes of the Atlantic and Indian monsoons over the past 20,000 years: New insights based on the comparison of continental and marine records
Lezine, Anne-Marie1; Bassinot, Franck2; Peterschmitt, Jean-Yves2
通讯作者Lezine, Anne-Marie
来源期刊BULLETIN DE LA SOCIETE GEOLOGIQUE DE FRANCE
ISSN0037-9409
EISSN1777-5817
出版年2014
卷号185期号:1页码:3-12
英文摘要

Variations of Atlantic and Indian monsoon systems since the last glacial period are investigated by comparing eolian fluxes from two marine cores (ODP site 658 off western Africa and core 74KL off the Arabian peninsula) with 2147 hydrological records (lacustrine, palustrine, spring and fluvial, arid) gathered over a large continental area extending between 10 and 30 degrees N across Africa, Arabia and western India. We show that the hydrological response to the Holocene humid phase in the northern tropics strongly differs from a region to another. The humid period is significantly shorter in the Arabian peninsula and the horn of Africa compared to northern Africa even though its maximum is contemporaneous (11,000-7,000 cal yr BP). Western India displays a specific hydrological signal characterized by the importance of well-developed fluvial systems from the Himalayas and the paucity of lakes compared to the other regions. In western India, the humid peak is shifted toward the mid Holocene (8,000-6,000 cal yr BP). Both marine records show a peak between similar to 11,000 and 7,000 cal yr BP for the Holocene humid period, in good accordance with African-Arabian records. However, while continental hydrological data suggest that the onset and termination of this humid period might have been relatively progressive, the marine windborne records indicate abrupt transitions, somewhat out-of-phase with continental evidence (e.g. abrupt decrease of aeolian proxies as early as similar to 15,000 cal yr BP). Discrepancies between marine and continental likely result from the fact that aeolian fluxes at a given marine location do not simply record monsoon-related changes of humidity over the adjacent continental sources but could be affected also by changes of the source area (e.g., emersion of the Arabo-Persian gulf associated to the glacial, low sea-level stand), and changes in wind intensity and/or direction.


英文关键词African and Indian monsoon Last glacial period Holocene Continental hydrology Wind transport Marine records
类型Article
语种英语
国家France
收录类别SCI-E
WOS记录号WOS:000332444900001
WOS关键词ARABIAN SEA ; LAST DEGLACIATION ; LATE PLEISTOCENE ; GLACIAL MAXIMUM ; PERSIAN-GULF ; SAHARAN DUST ; HOLOCENE ; CLIMATE ; VARIABILITY ; POLLEN
WOS类目Geosciences, Multidisciplinary
WOS研究方向Geology
来源机构French National Research Institute for Sustainable Development
资源类型期刊论文
条目标识符http://119.78.100.177/qdio/handle/2XILL650/181246
作者单位1.Univ Paris 06, CNRS, UMR UPMC 7159, IRD,MNHN,Lab Oceanog & Climat Experimentat & Appr, F-75252 Paris 5, France;
2.UVSQ Orme Merisiers, CNRS, UMR CEA 8212, Lab Sci Climat & Environm, F-91191 Gif Sur Yvette, France
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GB/T 7714
Lezine, Anne-Marie,Bassinot, Franck,Peterschmitt, Jean-Yves. Orbitally-induced changes of the Atlantic and Indian monsoons over the past 20,000 years: New insights based on the comparison of continental and marine records[J]. French National Research Institute for Sustainable Development,2014,185(1):3-12.
APA Lezine, Anne-Marie,Bassinot, Franck,&Peterschmitt, Jean-Yves.(2014).Orbitally-induced changes of the Atlantic and Indian monsoons over the past 20,000 years: New insights based on the comparison of continental and marine records.BULLETIN DE LA SOCIETE GEOLOGIQUE DE FRANCE,185(1),3-12.
MLA Lezine, Anne-Marie,et al."Orbitally-induced changes of the Atlantic and Indian monsoons over the past 20,000 years: New insights based on the comparison of continental and marine records".BULLETIN DE LA SOCIETE GEOLOGIQUE DE FRANCE 185.1(2014):3-12.
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