Sinha, Devesh K. and Singh, Ashutosh Kumar (2007): Surface circulation in the eastern Indian Ocean during last 5 million years; planktic foraminiferal evidences
Leg/Site/Hole:
Related Expeditions:
Identifier:
ID:
2008-118144
Type:
georefid
Creator:
Name:
Sinha, Devesh K.
Affiliation:
Delhi University, Center of Advanced Study in Geology, Delhi, India
Role:
author
Name:
Singh, Ashutosh Kumar
Affiliation:
University of Delhi, India
Role:
author
Identification:
Title:
Surface circulation in the eastern Indian Ocean during last 5 million years; planktic foraminiferal evidences
Year:
2007
Source:
In: Nigam, Rajiv (editor), Saraswat, R. (editor), Marine micropaleontological studies from the northern Indian Ocean
Publisher:
Council of Scientific & Industrial Research, New Delhi, India
Volume:
36
Issue:
4
Pages:
342-350
Abstract:
The paper describes the major circulation changes in the eastern Indian Ocean during last 5 million years based on variation in planktic foraminiferal assemblages in various ODP and DSDP cores examined by various workers. The Late Miocene/Pliocene transition is characterized by weakening of the Leeuwin Current and migration of the polar front towards north. The early Pliocene is marked by closing of the Indonesian Seaway for surface waters and strengthening of the Leeuwin Current, a general warming of the surface waters and thickening of the mixed layer in the eastern Indian Ocean. The Late/Pliocene and Pleistocene witnessed severe climatic fluctuations and episodic weakening and strengthening of the Leeuwin Current in response to either ENSO induced changes in the Western Pacific Warm Pool or lowering of sea level and reduction in Indonesian throughflow due to ice sheet expansion.
Language:
English
Genre:
Serial
Rights:
URL:
Coverage: Geographic coordinates: North:25.0000 West:20.0000 East:
147.0000 South:-60.0000
Keywords: Stratigraphy; assemblages; Cenozoic; Deep Sea Drilling Project; East Indian Ocean; Foraminifera; Indian Ocean; Invertebrata; Leeuwin Current; marine environment; microfossils; Miocene; Neogene; ocean circulation; Ocean Drilling Program; paleo-oceanography; paleoenvironment; paleogeography; planktonic taxa; Pleistocene; Pliocene; Protista; Quaternary; Tertiary;
.