• Login
    View Item 
    •   DSpace Home
    • Institute's contributions
    • Scholarly literature
    • View Item
    •   DSpace Home
    • Institute's contributions
    • Scholarly literature
    • View Item
    JavaScript is disabled for your browser. Some features of this site may not work without it.

    Link between western Arabian sea surface temperature and summer monsoon strength and high-latitude abrupt climate events

    Thumbnail
    View/Open
    J_Geol_Soc_India_68_379.pdf (125.6Kb)
    Date
    2006
    Author
    Naidu, P.D.
    Metadata
    Show full item record
    Abstract
    Sea surface temperature (SST) is modulated by the summer monsoon winds and the associated upwelling in the Arabian Sea. Here, I report the changes of summer and winter SST's in the western Arabian Sea reconstructed for the last 22 ka using Artificial Neural Networks (ANN's) based on quantitative analyses of planktic foraminifera. High seasonal SST contrast between winter and summer during the last glacial period indicates weak upwelling and strong cold northeasterly winds. Minimum seasonal SST contrast during the Holocene reflects strong upwelling. Contrast between summer and winter SST's documented here is in agreement with the other upwelling proxies recorded in the Arabian Sea sediments over the time span covered in the present study. This suggests that seasonal SST is a potential proxy to quantify the upwelling and the associated monsoon strength in the Arabian Sea. During an intense phase of monsoon in the Early Holocene a drastic reduction of annual summer and winter SST's is documented around 8.2 cal ka, which coincides with a decline of the monsoon upwelling strength. A similar cooling event around 8.2 cal ka was recognized in the north Atlantic as well as in the tropics. This suggests a link between high-latitude climate on the one hand and monsoon upwelling strength in the Arabian Sea and tropical climate changes on the other.
    URI
    http://drs.nio.org/drs/handle/2264/467
    Collections
    • Scholarly literature [9074]

    DSpace software copyright © 2002-2016  DuraSpace
    Contact Us | Send Feedback
    Theme by 
    Atmire NV
     

     

    Browse

    All of DSpaceCommunities & CollectionsBy Issue DateAuthorsTitlesSubjectsThis CollectionBy Issue DateAuthorsTitlesSubjects

    My Account

    LoginRegister

    DSpace software copyright © 2002-2016  DuraSpace
    Contact Us | Send Feedback
    Theme by 
    Atmire NV