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A glimpse of the Quaternary monsoon history from India and adjoining seas

DRS at CSIR-National Institute of Oceanography

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Title A glimpse of the Quaternary monsoon history from India and adjoining seas
 
Creator Saraswat, R.
Nigam, R.
Correge, T.
 
Subject palaeoclimatology
monsoons
palaeosalinity
foraminifera
micropalaeontology
 
Description The evolution of the monsoon is briefly summarized taking into account previous studies conducted on both terrestrial and marine records recovered from the Indian subcontinent and the adjoining seas. While the initiation of the monsoon is debated, it seems clear that a major intensification of the summer monsoon occurred at ~ 8.2 Ma. A seasonal monsoon circulation with distinct summer and winter monsoon phases was established at ~ 2.8 Ma. In the Late Quaternary, the summer monsoon weakens during glacial periods as compared to interglacial periods. The centennial to sub-centennial scale changes in the monsoon during both glacial and interglacial periods suggest strong links between high latitude processes and the tropical monsoon and its role in modulating northern hemispheric climate. The glacial terminations are marked by weak monsoon activity. The summer monsoon weakened during the Middle Holocene after the Early Holocene optimum. A change in the monsoon intensity though alters the salinity of the seas surrounding India, the quantitative paleosalinity reconstructions still have large associated uncertainties and an effort should be made to lower them.
 
Date 2014-03-05T10:46:54Z
2014-03-05T10:46:54Z
2014
 
Type Journal Article
 
Identifier Palaeogeography Palaeoclimatology Palaeoecology, vol.397; 2014; 1-6
no
http://drs.nio.org/drs/handle/2264/4474
 
Language en
 
Relation Bioorg_Med_Chem_Lett_24_2863.jpg
 
Rights An edited version of this paper was published by Elsevier. Copyright [2013] Elsevier
 
Publisher Elsevier