Dust emissions from Kati Thanda-Lake Eyre: a review
Kati Thanda-Lake Eyre (KT-LE) sits at the heart of Australia’s dust transport system. Satellite mapping demonstrates that the lower Channel Country/northern KT-LE represents a global dust hotspot–the largest in the Southern Hemisphere. This dust is transported widely, with two dominant plume pathway...
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ftunivwollongong:oai:ro.uow.edu.au:test2021-10567 2023-05-15T18:25:46+02:00 Dust emissions from Kati Thanda-Lake Eyre: a review Marx, S. K. May, J. H. Cohen, T. Kamber, B. S. McGowan, H. A. Petherick, L. 2022-01-01T08:00:00Z https://ro.uow.edu.au/test2021/5020 https://doi.org/10.1080/03721426.2022.2054918 unknown Research Online https://ro.uow.edu.au/test2021/5020 https://doi.org/10.1080/03721426.2022.2054918 Test Series for Scopus Harvesting 2021 aeolian Aerosol geomorphology lacustrine palaeoclimate Quaternary text 2022 ftunivwollongong https://doi.org/10.1080/03721426.2022.2054918 2022-05-30T22:24:06Z Kati Thanda-Lake Eyre (KT-LE) sits at the heart of Australia’s dust transport system. Satellite mapping demonstrates that the lower Channel Country/northern KT-LE represents a global dust hotspot–the largest in the Southern Hemisphere. This dust is transported widely, with two dominant plume pathways; southeast, across the Tasman Sea, South Pacific Ocean and Southern Ocean, and northwest over the Pilbara/Kimberly and Indian Ocean. Marine sedimentary records imply KT-LE has been emitting dust throughout the Quaternary and potentially longer, although dust deposits linked directly to KT-LE exist only for the past ~55 kyr. The southern section of KT-LE emits little dust today; however, palaeo-aeolian sediments outcrop in, and mantle, the southern lake margins, pointing to the possibility of major net dust deflation episodes over the last glacial cycle. The spatial extent of net-deflation episodes remains uncertain. Only one event, at 30–15 ka, is evident in both lake sedimentary records and distal dust records. Over the late Pleistocene, it remains difficult to quantity the contribution of KT-LE sediment to Australia’s dust load, although estimates suggest KT-LE generated 13% and 22% of Australia’s dust load over the last 80 and 40 ka, respectively. Modern-day/Holocene dust emissions are periodic and appear coupled to arid-humid cycles, with sediment recharge a key contributing factor. During the late Pleistocene, controls on emissions are less clear, but likely coincided with large-scale changes in moisture. Despite 80 years of dust research at KT-LE, there remains much to learn about climate–landscape interactions and dust generation in Australia’s arid heart. Text Southern Ocean University of Wollongong, Australia: Research Online Indian Kati ENVELOPE(15.793,15.793,67.536,67.536) Pacific Southern Lake ENVELOPE(-94.333,-94.333,62.217,62.217) Southern Ocean Transactions of the Royal Society of South Australia 146 1 168 206 |
institution |
Open Polar |
collection |
University of Wollongong, Australia: Research Online |
op_collection_id |
ftunivwollongong |
language |
unknown |
topic |
aeolian Aerosol geomorphology lacustrine palaeoclimate Quaternary |
spellingShingle |
aeolian Aerosol geomorphology lacustrine palaeoclimate Quaternary Marx, S. K. May, J. H. Cohen, T. Kamber, B. S. McGowan, H. A. Petherick, L. Dust emissions from Kati Thanda-Lake Eyre: a review |
topic_facet |
aeolian Aerosol geomorphology lacustrine palaeoclimate Quaternary |
description |
Kati Thanda-Lake Eyre (KT-LE) sits at the heart of Australia’s dust transport system. Satellite mapping demonstrates that the lower Channel Country/northern KT-LE represents a global dust hotspot–the largest in the Southern Hemisphere. This dust is transported widely, with two dominant plume pathways; southeast, across the Tasman Sea, South Pacific Ocean and Southern Ocean, and northwest over the Pilbara/Kimberly and Indian Ocean. Marine sedimentary records imply KT-LE has been emitting dust throughout the Quaternary and potentially longer, although dust deposits linked directly to KT-LE exist only for the past ~55 kyr. The southern section of KT-LE emits little dust today; however, palaeo-aeolian sediments outcrop in, and mantle, the southern lake margins, pointing to the possibility of major net dust deflation episodes over the last glacial cycle. The spatial extent of net-deflation episodes remains uncertain. Only one event, at 30–15 ka, is evident in both lake sedimentary records and distal dust records. Over the late Pleistocene, it remains difficult to quantity the contribution of KT-LE sediment to Australia’s dust load, although estimates suggest KT-LE generated 13% and 22% of Australia’s dust load over the last 80 and 40 ka, respectively. Modern-day/Holocene dust emissions are periodic and appear coupled to arid-humid cycles, with sediment recharge a key contributing factor. During the late Pleistocene, controls on emissions are less clear, but likely coincided with large-scale changes in moisture. Despite 80 years of dust research at KT-LE, there remains much to learn about climate–landscape interactions and dust generation in Australia’s arid heart. |
format |
Text |
author |
Marx, S. K. May, J. H. Cohen, T. Kamber, B. S. McGowan, H. A. Petherick, L. |
author_facet |
Marx, S. K. May, J. H. Cohen, T. Kamber, B. S. McGowan, H. A. Petherick, L. |
author_sort |
Marx, S. K. |
title |
Dust emissions from Kati Thanda-Lake Eyre: a review |
title_short |
Dust emissions from Kati Thanda-Lake Eyre: a review |
title_full |
Dust emissions from Kati Thanda-Lake Eyre: a review |
title_fullStr |
Dust emissions from Kati Thanda-Lake Eyre: a review |
title_full_unstemmed |
Dust emissions from Kati Thanda-Lake Eyre: a review |
title_sort |
dust emissions from kati thanda-lake eyre: a review |
publisher |
Research Online |
publishDate |
2022 |
url |
https://ro.uow.edu.au/test2021/5020 https://doi.org/10.1080/03721426.2022.2054918 |
long_lat |
ENVELOPE(15.793,15.793,67.536,67.536) ENVELOPE(-94.333,-94.333,62.217,62.217) |
geographic |
Indian Kati Pacific Southern Lake Southern Ocean |
geographic_facet |
Indian Kati Pacific Southern Lake Southern Ocean |
genre |
Southern Ocean |
genre_facet |
Southern Ocean |
op_source |
Test Series for Scopus Harvesting 2021 |
op_relation |
https://ro.uow.edu.au/test2021/5020 https://doi.org/10.1080/03721426.2022.2054918 |
op_doi |
https://doi.org/10.1080/03721426.2022.2054918 |
container_title |
Transactions of the Royal Society of South Australia |
container_volume |
146 |
container_issue |
1 |
container_start_page |
168 |
op_container_end_page |
206 |
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1766207428440883200 |