The North Atlantic marine reservoir effect in the early Holocene: implications for defining and understanding MRE values

Ascough, P.L., Cook, G.T., Dugmore, A.J. and Scott, E.M. (2007) The North Atlantic marine reservoir effect in the early Holocene: implications for defining and understanding MRE values. Nuclear Instruments and Methods in Physics Research Section B: Beam Interactions with Materials and Atoms, 259(1), pp. 438-447. (doi:10.1016/j.nimb.2007.01.185)

[img] Text
5021.pdf

698kB

Publisher's URL: http://dx.doi.org/10.1016/j.nimb.2007.01.185

Abstract

The marine reservoir effect (MRE) is a <sup>14</sup>C age offset between the oceanic and atmospheric carbon reservoirs. The MRE is neither spatially nor temporally constant and values may deviate significantly from the global model average provided by the Marine04 curve. Such a deviation is calculated as a ©R value and modern (pre-bomb) values show considerable spatial variations. There is also considerable evidence for temporal variability linked to paleoenvironmental changes identified in paleoclimatic proxy records. Seven new ©R values are presented for the North Atlantic, relating to the period c. 8430 3890 cal. BP (c. 6480 1940 BC). These were obtained from <sup>14</sup>C analysis of multiple samples of terrestrial and marine material derived from seven individual archaeological deposits from Mainland Scotland, the Outer Hebrides and the Orkney Isles. The ©R values vary between 143 ± 20 14C yr and ‑100 ± 15 <sup>14</sup>C yr with the positive values all occurring in the earlier period (8430 5060 cal. BP), and the negative values all coming from later deposits (4820 3890 cal. BP). The nature of MRE values and the potential for spatial and temporal variation in values is the subject of current research interest and these data are placed in the context of (i) other estimates for UK coastal waters and (ii) important questions concerning current approaches to quantifying the MRE.

Item Type:Articles
Status:Published
Refereed:Yes
Glasgow Author(s) Enlighten ID:Ascough, Dr Philippa and Cook, Professor Gordon
Authors: Ascough, P.L., Cook, G.T., Dugmore, A.J., and Scott, E.M.
Subjects:Q Science > QC Physics
College/School:College of Science and Engineering > Scottish Universities Environmental Research Centre
Journal Name:Nuclear Instruments and Methods in Physics Research Section B: Beam Interactions with Materials and Atoms
ISSN:0168-583X
Copyright Holders:Copyright © 2007 Elsevier
First Published:First published in Nuclear Instruments and Methods in Physics Research Section B: Beam Interactions with Materials and Atoms 259(1):438-447
Publisher Policy:Reproduced in accordance with the copyright policy of the publisher.

University Staff: Request a correction | Enlighten Editors: Update this record