Dry lake beds as sources of dust in Australia during the Late Quaternary: A volumetric approach based on lake bed and deflated dune volumes

Patterns of aeolian deposition in subtropical Australia through the last glacial and deglacial periods

“…The challenge is that environmental change may be explained by both local and regional forces; for example, vegetation change may result from local fire regime changes or moisture balance shifts forced by regional climate. Deconvolution between local and regional drivers is important when investigating dust flux as the net mobilization of lithogenic material can be a result of processes at the source (e.g., Washington et al, 2006) and depositional locus (Farebrother et al, 2017). Two ways to separate local and regional signals are to: (1) increase the current multi-proxy paleoenvironmental dataset for the LGM in Australia (Turney et al, 2006a), with particular emphasis on capturing records of sufficient antiquity in underrepresented and climatically sensitive locations; and (2) establish robust chronologies, in combination with multi-proxy datasets, which can be used to infer changes in local variables (e.g., effective precipitation, temperature, catchment conditions, and available moisture) and how they have influenced the paleoenvironmental record.…”

Interglacial-glacial climatic signatures preserved in a regressive coastal barrier, southeastern Australia

“…The observations of aeolian dune activity during the LGM presented in this paper contribute to a larger discussion on the climatic conditions and landscape dynamics between MIS 4 to MIS 2 in southeastern Australia with evidence for more arid conditions and sparser vegetation (Bowler, 1976;Colhoun 1988). Further evidence of more arid conditions in this region during these glacial periods comes from marine cores from the Tasman Sea showing higher dust production from the Australian continent during these periods (Hesse, 1994;Hesse et al, 2004;Hesse and McTainsh, 1999;2003;Farebrother et al, 2017). The OSL ages and aeolian landforms in Gippsland support the notion of intensification of aridity and geographical extension in its range in this southeastern region of Australia during the LGM.…”

Determining the Frequency of Dry Lake Bed Formation in Semi-Arid Mongolia From Satellite Data

“…Dry lake beds are one important source as well as a hotspot of Asian dust emission. Dust affects Earth's climate, ecology, and economies across a broad range of scales, both temporally and spatially, and is an integral part of the Earth's climate system [6]. Dust sources, of natural and anthropogenic origins, were calculated with their respective contributions to emissions, and …”

“…Satellite images of dust storms in the Gobi region often show that large dust clouds are comprised of many well-defined plumes that emerge from "point" sources [5]. Farebrother et al (2017) found a strong power relationship between the lake area and the mass of deflated lake bed sediments in Southeastern Australia [6]. In Mongolia's Gobi Desert, dry lake beds have been identified as a source of high-frequency dust storms.…”