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An age scale for the first shallow (Sub-) Antarctic ice core from Young Island, Northwest Ross Sea

Citation

Moser, DE and Jackson, S and Kjaer, HA and Markle, B and Ngoumtsa, E and Pedro, JB and Segato, D and Spolaor, A and Tetzner, D and Vallelonga, P and Thomas, ER, An age scale for the first shallow (Sub-) Antarctic ice core from Young Island, Northwest Ross Sea, Geosciences, 11, (9) Article 368. ISSN 2076-3263 (2021) [Refereed Article]


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DOI: doi:10.3390/geosciences11090368

Abstract

The climate of the sub-Antarctic is important in understanding the environmental conditions of Antarctica and the Southern Ocean. However, regional climate proxy records from this region are scarce. In this study, we present the stable water isotopes, major ion chemistry, and dust records from the first ice core from the (sub-)Antarctic Young Island. We present and discuss various dating approaches based on commonly used ice core proxies, such as stable water isotopes and seasonally deposited ions, together with site-specific characteristics such as melt layers. The dating approaches are compared with estimated precipitation rates from reanalysis data (ERA5) and volcanic cryptotephra shards likely presenting an absolute tie point from a 2001 CE eruption on neighboring Sturge Island. The resulting ice core age scale spans the period 2016 to 1995, with an uncertainty of 2 years.

Item Details

Item Type:Refereed Article
Keywords:age scale, (sub-)Antarctic island, shallow ice core, proxies, melting
Research Division:Earth Sciences
Research Group:Physical geography and environmental geoscience
Research Field:Palaeoclimatology
Objective Division:Environmental Policy, Climate Change and Natural Hazards
Objective Group:Understanding climate change
Objective Field:Effects of climate change on Antarctic and sub-Antarctic environments (excl. social impacts)
UTAS Author:Pedro, JB (Dr Joel Pedro)
ID Code:151702
Year Published:2021
Web of Science® Times Cited:1
Deposited By:Australian Antarctic Program Partnership
Deposited On:2022-08-03
Last Modified:2022-08-03
Downloads:0

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