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The neodymium isotope fingerprint of Adélie Coast Bottom Water

Citation

Lambelet, M and van de Flierdt, T and Butler, ECV and Bowie, AR and Rintoul, SR and Watson, RJ and Remenyi, T and Lannuzel, D and Warner, M and Robinson, LF and Bostock, HC and Bradtmiller, LI, The neodymium isotope fingerprint of Adelie Coast Bottom Water, Geophysical Research Letters, 45, (20) pp. 11,247-11,256. ISSN 0094-8276 (2018) [Refereed Article]


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Copyright Statement

Copyright 2018 The Authors. Licensed under Creative Commons Attribution 4.0 International (CC BY 4.0) https://creativecommons.org/licenses/by/4.0/

DOI: doi:10.1029/2018GL080074

Abstract

Adélie Land Bottom Water (ALBW), a variety of Antarctic Bottom Water formed off the Adélie Land coast of East Antarctica, ventilates the abyssal layers of the Australian sector of the Southern Ocean as well as the eastern Indian and Pacific Oceans. We present the first dissolved neodymium (Nd) isotope and concentration measurements for ALBW. The summertime signature of ALBW is characterized by εNd = −8.9, distinct from Ross Sea Bottom Water, and similar to Weddell Sea Bottom Water. Adélie Land Shelf Water, the precursor water mass for wintertime ALBW, features the least radiogenic Nd fingerprint observed around Antarctica to date (εNd = −9.9). Local geology around Antarctica is important in setting the chemical signature of individual varieties of Antarctic Bottom Water, evident from the shelf water signature, which should be considered in the absence of direct wintertime observations.

Item Details

Item Type:Refereed Article
Keywords:neodymium isotopes, Adélie Land Bottom Water, Australian Sector of the Southern Ocean, Antarctica
Research Division:Earth Sciences
Research Group:Oceanography
Research Field:Chemical Oceanography
Objective Division:Expanding Knowledge
Objective Group:Expanding Knowledge
Objective Field:Expanding Knowledge in the Earth Sciences
UTAS Author:Bowie, AR (Associate Professor Andrew Bowie)
UTAS Author:Rintoul, SR (Dr Steve Rintoul)
UTAS Author:Remenyi, T (Dr Tom Remenyi)
UTAS Author:Lannuzel, D (Associate Professor Delphine Lannuzel)
ID Code:129928
Year Published:2018
Deposited By:Oceans and Cryosphere
Deposited On:2018-12-21
Last Modified:2019-03-13
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