A Marine Reservoir Correction for the Houtman-Abrolhos Archipelago, East Indian Ocean, Western Australia

Squire, Peter, Joannes-Boyau, Renaud, Scheffers, Anja M., Nothdurft, Luke D., Hua, Quan, Collins, Lindsay B., Scheffers, Sander R. and Zhao, Jian-xin (2013) A Marine Reservoir Correction for the Houtman-Abrolhos Archipelago, East Indian Ocean, Western Australia. Radiocarbon, 55 1: 103-114. doi:10.2458/azu_js_rc.v55i1.16197


Author Squire, Peter
Joannes-Boyau, Renaud
Scheffers, Anja M.
Nothdurft, Luke D.
Hua, Quan
Collins, Lindsay B.
Scheffers, Sander R.
Zhao, Jian-xin
Title A Marine Reservoir Correction for the Houtman-Abrolhos Archipelago, East Indian Ocean, Western Australia
Journal name Radiocarbon   Check publisher's open access policy
ISSN 0033-8222
Publication date 2013-01-01
Year available 2013
Sub-type Article (original research)
DOI 10.2458/azu_js_rc.v55i1.16197
Open Access Status DOI
Volume 55
Issue 1
Start page 103
End page 114
Total pages 12
Place of publication Tucson, AZ, United States
Publisher University of Arizona, Department of Geosciences
Collection year 2014
Language eng
Abstract High-precision analysis using accelerator mass spectrometry (AMS) was performed upon known-age Holocene and modern, pre-bomb coral samples to generate a marine reservoir age correction value (ΔR) for the Houtman-Abrolhos Archipelago (28.7°S, 113.8°E) off the Western Australian coast. The mean ΔR value calculated for the Abrolhos Islands, 54 ± 30 yr (1σ) agrees well with regional ΔR values for Leeuwin Current source waters (N-NW Australia-Java) of 60 ± 38. The Abrolhos Islands show little variation with ΔR values of the northwestern and north Australian coast, underlining the dominance of the more equilibrated western Pacific-derived waters of the Leeuwin Current over local upwelling. The Abrolhos Islands ΔR values have remained stable over the last 2896 yr cal BP, being also attributed to the Leeuwin Current and the El Niño Southern Oscillation (ENSO) signal during this period. Expected future trends will be a strengthening of the teleconnection of the Abrolhos Islands to the climatic patterns of the equatorial Pacific via enhanced ENSO and global warming activity strengthening the Leeuwin Current. The possible effect upon the trend of future ΔR values may be to maintain similar values and an increase in stability. However, warming trends of global climate change may cause increasing dissimilarity of ΔR values due to the effects of increasing heat stress upon lower-latitude coral communities.
Keyword Radiocarbon age calibration
Leeuwin Current system
Events
Corals
Q-Index Code C1
Q-Index Status Confirmed Code
Institutional Status UQ

Document type: Journal Article
Sub-type: Article (original research)
Collections: School of Earth Sciences Publications
Official 2014 Collection
 
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