globalchange  > 过去全球变化的重建
DOI: 10.1016/j.quascirev.2012.09.007
Scopus记录号: 2-s2.0-84880615773
论文题名:
Late Quaternary palaeoenvironmental change in the Australian drylands
作者: Fitzsimmons K.E.; Cohen T.J.; Hesse P.P.; Jansen J.; Nanson G.C.; May J.-H.; Barrows T.T.; Haberlah D.; Hilgers A.; Kelly T.; Larsen J.; Lomax J.; Treble P.
刊名: Quaternary Science Reviews
ISSN: 2773791
出版年: 2013
卷: 74
起始页码: 78
结束页码: 96
语种: 英语
英文关键词: Aridity ; Australasian integration of ice core, marine and terrestrial records (OZ-INTIMATE) project ; Australia ; Desert dunes ; Palaeohydrology ; Playas
Scopus关键词: Aridity ; Australia ; Desert dunes ; Ice core ; Palaeohydrology ; Playas ; Arid regions ; Atmospheric thermodynamics ; Stream flow ; Lakes ; climatic region ; Holocene ; humid environment ; Last Glacial Maximum ; moisture content ; paleoenvironment ; paleohydrology ; precipitation (climatology) ; Quaternary ; snowmelt ; Australia ; Lake Eyre Basin ; South Australia
英文摘要: In this paper we synthesise existing palaeoenvironmental data from the arid and semi-arid interior of the Australian continent for the period 40-0ka. Moisture is the predominant variable controlling environmental change in the arid zone. Landscapes in this region respond more noticeably to changes in precipitation than to temperature. Depending on their location, arid zone records broadly respond to tropical monsoon-influenced climate regimes, the temperate latitude westerly systems, or a combination of both.The timing and extent of relatively arid and humid phases vary across the continent, in particular between the westerly wind-controlled temperate latitudes, and the interior and north which are influenced by tropically sourced precipitation. Relatively humid phases in the Murray-Darling Basin on the semi-arid margins, which were characterised by large rivers most likely fed by snow melt, prevailed from 40ka to the Last Glacial Maximum (LGM), and from the deglacial to the mid Holocene. By contrast, the Lake Eyre basin in central Australia remained relatively dry throughout the last 40ka, with lake high stands at Lake Frome around 35-30ka, and parts of the deglacial period and the mid-Holocene. The LGM was characterised by widespread relative aridity and colder conditions, as evidenced by extensive desert dune activity and dust transport, lake level fall, and reduced but episodic fluvial activity. The climate of the deglacial period was spatially divergent. The southern part of the continent experienced a brief humid phase around ~17-15ka, followed by increased dune activity around ~14-10ka. This contrasts with the post-LGM persistence of arid conditions in the north, associated with a lapsed monsoon and reflected in lake level lows and reduced fluvial activity, followed by intensification of the monsoon and increasingly effective precipitation from ~14ka. Palaeoenvironmental change during the Holocene was also spatially variable. The early to mid-Holocene was, however, generally characterised by moderately humid conditions, demonstrated by lake level rise, source-bordering dune activity, and speleothem growth, persisting at different times across the continent. Increasingly arid conditions developed into the late Holocene, particularly in the central arid zone. © 2012 Elsevier Ltd.
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/60572
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作者单位: Department of Human Evolution, Max Planck Institute for Evolutionary Anthropology, Deutscher Platz 6, D-04103 Leipzig, Germany; School of Earth and Environmental Sciences, University of Wollongong, Wollongong, Australia; Department of Environment and Geography, Macquarie University, Sydney, Australia; Department of Physical Geography and Quaternary Geology, Stockholm University, Stockholm, Sweden; College of Life and Environmental Sciences, University of Exeter, Exeter, United Kingdom; FEI Australia, Brisbane, Australia; Institute of Geography, University of Cologne, Cologne, Germany; Geoscience Australia, Canberra, Australia; Research School of Earth Sciences, Australian National University, Canberra, Australia; Connected Waters Initiative Research Centre, Water Research Laboratory, University of New South Wales, Sydney, Australia; Department of Geography, Justus-Liebig-University Gießen, Gießen, Germany; Institute for Environmental Research, Australian Nuclear Science and Technology Association, Sydney, Australia

Recommended Citation:
Fitzsimmons K.E.,Cohen T.J.,Hesse P.P.,et al. Late Quaternary palaeoenvironmental change in the Australian drylands[J]. Quaternary Science Reviews,2013-01-01,74
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