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https://hdl.handle.net/2440/118430
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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 Responsibility: | 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 |
Grant ID: | http://purl.org/au-research/grants/arc/DP150103875 http://purl.org/au-research/grants/arc/FT130100195 |
Published version: | http://dx.doi.org/10.1016/j.quascirev.2018.11.016 |
Appears in Collections: | Aurora harvest 4 Geology & Geophysics publications |
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