Godad, Shital P. et al. (2011): Sea surface temperature changes during May and August in the western Arabian Sea over the last 22 kyr; implications as to shifting of the upwelling season
Leg/Site/Hole:
Related Expeditions:
ODP 117
Identifier:
ID:
2011-089350
Type:
georefid
ID:
10.1016/j.marmicro.2010.09.006
Type:
doi
Creator:
Name:
Godad, Shital P.
Affiliation:
National Institute of Oceanography, Dona Paula, India
Role:
author
Name:
Naidu, Pothuri Divakar
Affiliation:
Uppsala University, Sweden
Role:
author
Name:
Malmgren, Bjorn A.
Affiliation:
Role:
author
Identification:
Title:
Sea surface temperature changes during May and August in the western Arabian Sea over the last 22 kyr; implications as to shifting of the upwelling season
Year:
2011
Source:
Marine Micropaleontology
Publisher:
Elsevier, Amsterdam, Netherlands
Volume:
78
Issue:
1-2
Pages:
25-29
Abstract:
In the western Arabian Sea (WAS), the highest seasonal sea surface temperature (SST) difference presently occurs between May and August. In order to gain an understanding on how monsoonal upwelling modulates the SST difference between these two months, we have computed SST for the months of May and August based on census counts of planktonic foraminifers by using the artificial neural network (ANN) technique. The SST difference between May and August exhibits three distinct phases: i) a moderate SST difference in the late Holocene (0-3.5ka) is attributable to intense upwelling during August, ii) a minimum SST difference from 4 to 12ka is due to weak upwelling during the month of August, and iii) the highest SST difference during the last glacial interval (19 to 22ka) with high Globigerina bulloides % could have been caused by the occurrence of a prolonged upwelling season (from May through July) and maximum difference in the incoming solar radiation between May and August. Overall, variations in the SST difference between May and August show that the timing of intense upwelling in the Western Arabian Sea over the last 22 kyr has been variable over the months of June, July and August. Abstract Copyright (2011) Elsevier, B.V.
Language:
English
Genre:
Serial
Rights:
URL:
Coverage: Geographic coordinates: North:18.0305 West:57.3633 East:
57.3634 South:18.0304
Keywords: Quaternary geology; Arabian Sea; assemblages; Cenozoic; Foraminifera; Globigerina; Globigerina bulloides; Globigerinacea; Globigerinidae; Holocene; Indian Ocean; Invertebrata; Leg 117; marine environment; microfossils; monsoons; neural networks; Ocean Drilling Program; ODP Site 723; paleo-oceanography; paleoclimatology; paleoenvironment; paleotemperature; Pleistocene; Protista; Quaternary; Rotaliina; sea-surface temperature; seasonal variations; upper Pleistocene; upwelling;
.