Early- to late-Holocene contrast in productivity, OMZ intensity and calcite dissolution in the eastern Arabian Sea
IR@NIO: CSIR-National Institute Of Oceanography, Goa
View Archive Info| Field | Value | |
| Creator |
Naik, S.S.
Godad, S.P. Naidu, P.D. Tiwari, M. Paropkari, A.L. |
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| Date |
2014-06-11T11:25:59Z
2014-06-11T11:25:59Z 2014 |
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| Identifier |
Holocene, vol.24(6); 2014; 749-755.
yes http://drs.nio.org/drs/handle/2264/4542 |
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| Description |
The Oxygen Minimum Zone (OMZ) is a potential source of CO<sup>2</sup> to the atmosphere, and the extensive OMZ spread to 1.37 × 10<sup>6</sup> km<sup>2</sup> in the Northern Arabian Sea would be an important contributor to the CO<sup>2</sup> budget. In this perspective, we report here that the Eastern Arabian Sea experienced coeval increase in productivity and denitrification from ~7 to 0 kyr, which coincides with minimum dissolved oxygen levels in bottom waters. In addition, during the same period, an increased calcium carbonate dissolution occurred as evidenced by low CaCO<sup>3</sup> content, decreasing shell weights of planktonic foraminifer species Globigerinoides ruber with well-marked dissolution features on their shells. Therefore, this study has implications on the role of OMZ in governing CaCO<sup>3</sup> dissolution and contributing to an increase in atmospheric CO<sup>2</sup>.
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| Language |
en
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| Publisher |
SAGE Publications
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| Relation |
Holocene_24_749.jpg
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| Rights |
© The Author(s) 2014. An edited version of this paper was published by SAGE
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| Subject |
calcite dissolution
Oxygen Minimum Zone |
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| Title |
Early- to late-Holocene contrast in productivity, OMZ intensity and calcite dissolution in the eastern Arabian Sea
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| Type |
Journal Article
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