A pluvial episode identified in arid Australia during the Medieval Climatic Anomaly

Cohen, T. J., Nanson, G. C., Jansen, J. D., Gliganic, L. A., May, J. -H., Larsen, J. R., Goodwin, I. D., Browning, S. and Price, D. M. (2012) A pluvial episode identified in arid Australia during the Medieval Climatic Anomaly. Quaternary Science Reviews, 56 167-171. doi:10.1016/j.quascirev.2012.09.021

Author Cohen, T. J.
Nanson, G. C.
Jansen, J. D.
Gliganic, L. A.
May, J. -H.
Larsen, J. R.
Goodwin, I. D.
Browning, S.
Price, D. M.
Title A pluvial episode identified in arid Australia during the Medieval Climatic Anomaly
Journal name Quaternary Science Reviews   Check publisher's open access policy
ISSN 0277-3791
Publication date 2012-11-01
Sub-type Article (original research)
DOI 10.1016/j.quascirev.2012.09.021
Open Access Status Not Open Access
Volume 56
Start page 167
End page 171
Total pages 5
Place of publication Kidlington, Oxford, United Kingdom
Publisher Pergamon
Language eng
Abstract Optically stimulated luminescence (OSL) ages from a relict shoreline on Lake Callabonna record a major pluvial episode in southern central Australia between 1050 ± 70 and 1100 ± 60 Common Era (CE), within the Medieval Climatic Anomaly (MCA). During this pluvial interval Lake Callabonna filled to 10-12 times the volume of the largest historical filling (1974) and reached maximum depths of 4-5 m, compared to the 0.5-1.0 m achieved today. Until now there has been no direct evidence for the MCA in the arid interior of Australia. A multi-proxy, analogue-based atmospheric circulation reconstruction indicates that the pluvial episode was associated with an anomalous meridional atmospheric circulation pattern over the Southern extratropics, with high sea-level pressure ridges in the central Indian Ocean and Tasman Sea, and a trough extending from the Southern Ocean into central Australia. A major decline in the mobility of the Australian aboriginal hunter-gatherer coincides with this MCA period, in southern central Australia.
Keyword Mega-lake
Lake Callabonna
Medieval Climatic Anomaly
Q-Index Code C1
Q-Index Status Provisional Code
Institutional Status Non-UQ

Document type: Journal Article
Sub-type: Article (original research)
Collection: School of Geography, Planning and Environmental Management Publications
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Created: Mon, 24 Jun 2013, 00:29:59 EST by Joshua Larsen on behalf of School of Geography, Planning & Env Management