Glacial-interglacial changes in the surface water characteristics of the Andaman Sea: Evidence from stable isotopic ratios of planktonic foraminifera
IR@NIO: CSIR-National Institute Of Oceanography, Goa
View Archive Info| Field | Value | |
| Creator |
Ahmad, S.M.
Patil, D.J. Rao, P.S. Nath, B.N. Rao, B.R. Rajagopalan, G. |
|
| Date |
2006-09-04T04:37:57Z
2006-09-04T04:37:57Z 2000 |
|
| Identifier |
Proc. Indian Acad. Sci. (Earth Planet. Sci.), vol.109(1), 153-156p.
http://drs.nio.org/drs/handle/2264/357 |
|
| 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 d<sup>18</sup>O 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 <sup>18</sup>O 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 d<sup>13</sup>C values observed during the isotopic stages 2 and 4 are probably due to the enhanced productivity during glacial times in the Andaman Sea.
|
|
| Format |
91299 bytes
application/pdf |
|
| Language |
en
|
|
| Publisher |
Indian Academy of Sciences
|
|
| Subject |
Andaman Sea
Globigerinoides ruber |
|
| Title |
Glacial-interglacial changes in the surface water characteristics of the Andaman Sea: Evidence from stable isotopic ratios of planktonic foraminifera
|
|
| Type |
Article
|
|