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Glacial-interglacial changes in the surface water characteristics of the Andaman Sea: Evidence from stable isotopic ratios of planktonic foraminifera
DRS at CSIR-National Institute of Oceanography
View Archive Info| Field | Value | |
| Title |
Glacial-interglacial changes in the surface water characteristics of the Andaman Sea: Evidence from stable isotopic ratios of planktonic foraminifera
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| Creator |
Ahmad, S.M.
Patil, D.J. Rao, P.S. Nath, B.N. Rao, B.R. Rajagopalan, G. |
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| Subject |
Andaman Sea
Globigerinoides ruber |
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| Description |
Stable carbon and oxygen isotopic analyses of the planktonic foraminifera (Globigerinoides ruber) from a deep sea sediment core (GC-1) in the Andaman Sea show high glacial-to-Holocene d18O amplitude of 2.1% which is consistent with previously published records from this marginal basin and suggest increased salinity and/or decreased temperature in the glacial surface waters of this region. A pulse of 18O enrichment during the last deglaciation can be attributed to a Younger Dryas cooling event and/or to a sudden decrease of fresh water influx from the Irrawady and Salween rivers into the Andaman Sea. High d13C values observed during the isotopic stages 2 and 4 are probably due to the enhanced productivity during glacial times in the Andaman Sea.
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| Date |
2006-09-04T04:37:57Z
2006-09-04T04:37:57Z 2000 |
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| Type |
Journal Article
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| Identifier |
Proc. Indian Acad. Sci. (Earth Planet. Sci.), vol.109(1), 153-156p.
http://drs.nio.org/drs/handle/2264/357 |
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| Language |
en
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| Format |
91299 bytes
application/pdf |
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| Publisher |
Indian Academy of Sciences
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