Record Details

Relationship between weights of planktonic foraminifer shell and surface water CO sub(3) sup(=) concentration during the Holocene and Last Glacial Period

DRS at CSIR-National Institute of Oceanography

View Archive Info
 
 
Field Value
 
Title Relationship between weights of planktonic foraminifer shell and surface water CO sub(3) sup(=) concentration during the Holocene and Last Glacial Period
 
Creator Naik, S.S.
Naidu, P.D.
Govil, P.
Godad, S.
 
Subject planktonic foraminifer
carbonate ion concentration
Glacial Period
Globigerinoides sacculifer
 
Description Shell weights of Globigerinoides sacculifer and the elemental concentration of magnesium and calcium (Mg/Ca) from Globigerinoides ruber measured from an Arabian Sea sediment core, AAS9/21, exhibit an inverse relationship with each other, which reveals that shell weights are mainly controlled by surface water [CO sub(3) sup(=)] rather than calcification temperature. Down core shell weight variations of Core AAS9/21 show an excellent correspondence with CO sub(2) concentrations in an Antarctic Ice Core, which reveals that planktic foraminifera shells can trace atmospheric CO sub(2) due to the resultant change in surface water [CO sub(3) sup(=)]. Hence, shell weights of G. sacculifer can be used as a proxy to reconstruct atmospheric CO sub(2) concentrations in the past. Here, based on the shell weights, surface water [CO sub(3) sup(=)] change in the Arabian Sea is quantified and found that a [CO sub(3) sup(=)] variation of approx. mu mol/kg occurred during the Holocene and a approx. 36 mu mol/kg variation occurred during the last glacial period
 
Date 2010-08-03T09:53:38Z
2010-08-03T09:53:38Z
2010
 
Type Journal Article
 
Identifier Marine Geology, vol.275(1-4); 278-282
http://drs.nio.org/drs/handle/2264/3692
 
Language en
 
Rights An edited version of this paper was published by Elsevier. Copyright [2010] Elsevier
 
Publisher Elsevier