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dc.contributor.authorSarathchandraprasad, T.
dc.contributor.authorBanakar, V.K.
dc.date.accessioned2019/03/31
dc.date.accessioned2019-04-30T12:44:23Z
dc.date.available2018/10/05
dc.date.available2019-04-30T12:44:23Z
dc.date.issued2018
dc.identifier.citationCurrent Science, vol.114(9); 2018; 1940-1946
dc.identifier.issn0011-3891
dc.identifier.urihttps://doi.org/10.18520/cs/v114/i09/1934-1940
dc.identifier.urihttp://drs.nio.org/drs/handle/2264/8055
dc.description.abstractThe discharge of terrigenous clastics by seasonal peninsular rivers is known to reach the upper slope of the eastern margin of India, which is presently impinged by the monsoon-sensitive intense oxygen minimum zone (OMZ); however, their mutual behaviour in response to changes in the intensity of past Indian summer monsoons (ISM) is not clear. The -18O (G.sacculifer) time-series of a sediment core from the upper slope off Chennai exhibits distinct enrichment (~0.4‰) during the last glacial period (30-18 kiloyears BP: ka), and depletion (~-2.2‰) during the Holocene, suggesting a significant shift in ISM intensity. The monotonously increased terrigenous elements (Al, Ti and Mg) content and depleted - 18O (G.sacculifer) during the Holocene suggest tight-coupling between ISM and terrigenous sediment input. Highly depleted redoxsensitive Mn (<0.04%) (lesser than the source sediment content of 0.07%) throughout the last 42 kyr suggests well-sustained intense OMZ irrespective of ISM variation.
dc.languageen
dc.publisherCurrent Science Association & Indian Academy of Sciences
dc.relation.isreferencedbySCI
dc.rightsCreative commons
dc.titleLast 42 ky sediment chemistry of oxygen deficient coastal region of the Bay of Bengal: implications for terrigenous input and monsoon variability
dc.typeJournal Article
dc.affiliation.authorCSIR-National Institute of Oceanography, Dona Paula, Goa, India


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