Response of Sandy Lake in Schirmacher Oasis, East Antarctica to the glacial-interglacial climate shift

Badanal, Siddaiah Mahesh and Warrier, Anish Kumar and Rahul, Mohan and Tiwari, Manish (2017) Response of Sandy Lake in Schirmacher Oasis, East Antarctica to the glacial-interglacial climate shift. Journal of Paleolimnology, 58. pp. 275-289. ISSN 1573-0417

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Abstract

Freshwater lakes in Antarctica fluctuate from ice-free state (during austral summer) to icecover state (during austral winter). Hence the lakes respond instantly to the seasonal climate of the region. The Antarctic seasons respond sharply to the glacial and interglacial climates and these signatures are archived in the lake sediments. A sediment core from Sandy Lake, a periglacial lake located in Schirmacher Oasis of East Antarctica records distinct changes in grain-size, C, N, C/N ratios (atomic), d13COM and d15NOM contents during the last 36 ky. The contents of the sedimentary organic matter (OM) proxies (Corg * 0.3 ± 0.2%, C/N ratios *9 ± 5 and d13COM *-18 ± 6%) indicate that the OM in this lake sediment is a product of mixing of terrestrial and lacustrine biomass.

Item Type: Article
Subjects: Engineering > MIT Manipal > Civil Engineering
Depositing User: MIT Library
Date Deposited: 09 Oct 2017 11:18
Last Modified: 09 Oct 2017 11:18
URI: http://eprints.manipal.edu/id/eprint/149791

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