Climatic records over the past 30 ka from temperate Australia - a synthesis from the Oz-INTIMATE workgroup
Temperate Australia sits between the heat engine of the tropics and the cold Southern Ocean, encompassing a range of rainfall regimes and falling under the influence of different climatic drivers. Despite this heterogeneity, broad-scale trends in climatic and environmental change are evident over th...
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ftunivqespace:oai:espace.library.uq.edu.au:UQ:309329 2023-05-15T13:49:28+02:00 Climatic records over the past 30 ka from temperate Australia - a synthesis from the Oz-INTIMATE workgroup Petherick, L. Bostock, H. Cohen, T. J. Fitzsimmons, K. Tibby, J. Fletcher, M. -S. Moss, P. Reeves, J. Mooney, S. Barrows, T. Kemp, J. Jansen, J. Nanson, G. Dosseto, A. 2013-08-15 https://espace.library.uq.edu.au/view/UQ:309329 eng eng Pergamon doi:10.1016/j.quascirev.2012.12.012 issn:0277-3791 issn:1873-457X orcid:0000-0002-8903-8958 orcid:0000-0003-1546-9242 0806 Not set Temperate Australia Palaeoenvironmental variability Last Glacial Maximum 1105 Ecology Evolution Behavior and Systematics 1204 Archaeology 1907 Geology 2306 Global and Planetary Change 3302 Archaeology Journal Article 2013 ftunivqespace https://doi.org/10.1016/j.quascirev.2012.12.012 2020-12-15T00:25:54Z Temperate Australia sits between the heat engine of the tropics and the cold Southern Ocean, encompassing a range of rainfall regimes and falling under the influence of different climatic drivers. Despite this heterogeneity, broad-scale trends in climatic and environmental change are evident over the past 30ka. During the early glacial period (~30-22ka) and the Last Glacial Maximum (~22-18ka), climate was relatively cool across the entire temperate zone and there was an expansion of grasslands and increased fluvial activity in regionally important Murray-Darling Basin. The temperate region at this time appears to be dominated by expanded sea ice in the Southern Ocean forcing a northerly shift in the position of the oceanic fronts and a concomitant influx of cold water along the southeast (including Tasmania) and southwest Australian coasts. The deglacial period (~18-12ka) was characterised by glacial recession and eventual disappearance resulting from an increase in temperature deduced from terrestrial records, while there is some evidence for climatic reversals (e.g. the Antarctic Cold Reversal) in high resolution marine sediment cores through this period. The high spatial density of Holocene terrestrial records reveals an overall expansion of sclerophyll woodland and rainforest taxa across the temperate region after ~12ka, presumably in response to increasing temperature, while hydrological records reveal spatially heterogeneous hydro-climatic trends. Patterns after ~6ka suggest higher frequency climatic variability that possibly reflects the onset of large scale climate variability caused by the El Niño/Southern Oscillation. Article in Journal/Newspaper Antarc* Antarctic Sea ice Southern Ocean The University of Queensland: UQ eSpace Antarctic Southern Ocean The Antarctic Quaternary Science Reviews 74 58 77 |
institution |
Open Polar |
collection |
The University of Queensland: UQ eSpace |
op_collection_id |
ftunivqespace |
language |
English |
topic |
Temperate Australia Palaeoenvironmental variability Last Glacial Maximum 1105 Ecology Evolution Behavior and Systematics 1204 Archaeology 1907 Geology 2306 Global and Planetary Change 3302 Archaeology |
spellingShingle |
Temperate Australia Palaeoenvironmental variability Last Glacial Maximum 1105 Ecology Evolution Behavior and Systematics 1204 Archaeology 1907 Geology 2306 Global and Planetary Change 3302 Archaeology Petherick, L. Bostock, H. Cohen, T. J. Fitzsimmons, K. Tibby, J. Fletcher, M. -S. Moss, P. Reeves, J. Mooney, S. Barrows, T. Kemp, J. Jansen, J. Nanson, G. Dosseto, A. Climatic records over the past 30 ka from temperate Australia - a synthesis from the Oz-INTIMATE workgroup |
topic_facet |
Temperate Australia Palaeoenvironmental variability Last Glacial Maximum 1105 Ecology Evolution Behavior and Systematics 1204 Archaeology 1907 Geology 2306 Global and Planetary Change 3302 Archaeology |
description |
Temperate Australia sits between the heat engine of the tropics and the cold Southern Ocean, encompassing a range of rainfall regimes and falling under the influence of different climatic drivers. Despite this heterogeneity, broad-scale trends in climatic and environmental change are evident over the past 30ka. During the early glacial period (~30-22ka) and the Last Glacial Maximum (~22-18ka), climate was relatively cool across the entire temperate zone and there was an expansion of grasslands and increased fluvial activity in regionally important Murray-Darling Basin. The temperate region at this time appears to be dominated by expanded sea ice in the Southern Ocean forcing a northerly shift in the position of the oceanic fronts and a concomitant influx of cold water along the southeast (including Tasmania) and southwest Australian coasts. The deglacial period (~18-12ka) was characterised by glacial recession and eventual disappearance resulting from an increase in temperature deduced from terrestrial records, while there is some evidence for climatic reversals (e.g. the Antarctic Cold Reversal) in high resolution marine sediment cores through this period. The high spatial density of Holocene terrestrial records reveals an overall expansion of sclerophyll woodland and rainforest taxa across the temperate region after ~12ka, presumably in response to increasing temperature, while hydrological records reveal spatially heterogeneous hydro-climatic trends. Patterns after ~6ka suggest higher frequency climatic variability that possibly reflects the onset of large scale climate variability caused by the El Niño/Southern Oscillation. |
format |
Article in Journal/Newspaper |
author |
Petherick, L. Bostock, H. Cohen, T. J. Fitzsimmons, K. Tibby, J. Fletcher, M. -S. Moss, P. Reeves, J. Mooney, S. Barrows, T. Kemp, J. Jansen, J. Nanson, G. Dosseto, A. |
author_facet |
Petherick, L. Bostock, H. Cohen, T. J. Fitzsimmons, K. Tibby, J. Fletcher, M. -S. Moss, P. Reeves, J. Mooney, S. Barrows, T. Kemp, J. Jansen, J. Nanson, G. Dosseto, A. |
author_sort |
Petherick, L. |
title |
Climatic records over the past 30 ka from temperate Australia - a synthesis from the Oz-INTIMATE workgroup |
title_short |
Climatic records over the past 30 ka from temperate Australia - a synthesis from the Oz-INTIMATE workgroup |
title_full |
Climatic records over the past 30 ka from temperate Australia - a synthesis from the Oz-INTIMATE workgroup |
title_fullStr |
Climatic records over the past 30 ka from temperate Australia - a synthesis from the Oz-INTIMATE workgroup |
title_full_unstemmed |
Climatic records over the past 30 ka from temperate Australia - a synthesis from the Oz-INTIMATE workgroup |
title_sort |
climatic records over the past 30 ka from temperate australia - a synthesis from the oz-intimate workgroup |
publisher |
Pergamon |
publishDate |
2013 |
url |
https://espace.library.uq.edu.au/view/UQ:309329 |
geographic |
Antarctic Southern Ocean The Antarctic |
geographic_facet |
Antarctic Southern Ocean The Antarctic |
genre |
Antarc* Antarctic Sea ice Southern Ocean |
genre_facet |
Antarc* Antarctic Sea ice Southern Ocean |
op_relation |
doi:10.1016/j.quascirev.2012.12.012 issn:0277-3791 issn:1873-457X orcid:0000-0002-8903-8958 orcid:0000-0003-1546-9242 0806 Not set |
op_doi |
https://doi.org/10.1016/j.quascirev.2012.12.012 |
container_title |
Quaternary Science Reviews |
container_volume |
74 |
container_start_page |
58 |
op_container_end_page |
77 |
_version_ |
1766251416711593984 |