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Type: Journal article
Title: Australian hydroclimate during Marine Isotope Stage 3: a synthesis and review
Author: Kemp, C.
Tibby, J.
Arnold, L.
Barr, C.
Citation: Quaternary Science Reviews: the international multidisciplinary research and review journal, 2019; 204:94-104
Publisher: Elsevier
Issue Date: 2019
ISSN: 0277-3791
Statement of
C.W. Kemp, J. Tibby, L.J. Arnold, C. Barr
Abstract: Improved reconstructions of Australia's climate during Marine Isotope Stage 3 (MIS 3) are important for understanding the environmental context of widespread human settlement of the continent and the extinction of a wide range of megafauna by 45 ± 5 thousand years ago (ka). To better understand spatial and temporal climate trends during this period, we present a synthesis of hydroclimate data from 40 Australian MIS 3 records. Hydroclimate records were evaluated and weighted by a scoring system developed to evaluate dating and proxy quality and resolution before inclusion into the synthesis. Our analysis reveals that Australia experienced spatially variable climates from ∼57 to 49 ka before becoming predominantly wet from ∼49 to 40 ka. After ∼40 ka increasingly dry climates dominated MIS 3. Records from monsoon-influenced regions indicate a rapid drying from ∼48 ka to the end of MIS 3, while there was a wetter period from ∼50 to 40 ka in south westerly wind-influenced records. The implications of our findings are discussed in relation to other proxy records, with there being a significant relationship with regional fire history, but little correlation to atmospheric CO₂ concentration or global sea level.
Keywords: Quaternary; paleoclimatology; Australia; pata analysis; Australian monsoon; water availability; south westerly winds
Rights: © 2018 Elsevier Ltd. All rights reserved.
DOI: 10.1016/j.quascirev.2018.11.016
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Appears in Collections:Aurora harvest 4
Geology & Geophysics publications

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