Constant wind regimes during the Last Glacial Maximum and early Holocene: evidence from Little Llangothlin Lagoon, New England Tablelands, eastern Australia

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Author(s)
Shulmeister, James
Kemp, Justine
Fitzsimmons, Kathryn E
Gontz, Allen
Griffith University Author(s)
Year published
2016
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Here we present the results of a multi-proxy investigation
– integrating geomorphology, ground-penetrating
radar, and luminescence dating – of a high-elevation lunette
and beach berm in northern New South Wales, eastern Australia.
The lunette occurs on the eastern shore of Little Llangothlin
Lagoon and provides evidence for a lake high stand
combined with persistent westerly winds at the Last Glacial
Maximum (LGM – centring on 21.5 ka) and during the early
Holocene (ca. 9 and 6 ka). The reconstructed atmospheric circulation
is similar to the present-day conditions, and we infer
no significant changes in circulation at those ...
View more >Here we present the results of a multi-proxy investigation – integrating geomorphology, ground-penetrating radar, and luminescence dating – of a high-elevation lunette and beach berm in northern New South Wales, eastern Australia. The lunette occurs on the eastern shore of Little Llangothlin Lagoon and provides evidence for a lake high stand combined with persistent westerly winds at the Last Glacial Maximum (LGM – centring on 21.5 ka) and during the early Holocene (ca. 9 and 6 ka). The reconstructed atmospheric circulation is similar to the present-day conditions, and we infer no significant changes in circulation at those times, as compared to the present day. Our results suggest that the Southern Hemisphere westerlies were minimally displaced in this sector of Australasia during the latter part of the last ice age. Our observations also support evidence for a more positive water balance at the LGM and early Holocene in this part of the Australian sub-tropics.
View less >
View more >Here we present the results of a multi-proxy investigation – integrating geomorphology, ground-penetrating radar, and luminescence dating – of a high-elevation lunette and beach berm in northern New South Wales, eastern Australia. The lunette occurs on the eastern shore of Little Llangothlin Lagoon and provides evidence for a lake high stand combined with persistent westerly winds at the Last Glacial Maximum (LGM – centring on 21.5 ka) and during the early Holocene (ca. 9 and 6 ka). The reconstructed atmospheric circulation is similar to the present-day conditions, and we infer no significant changes in circulation at those times, as compared to the present day. Our results suggest that the Southern Hemisphere westerlies were minimally displaced in this sector of Australasia during the latter part of the last ice age. Our observations also support evidence for a more positive water balance at the LGM and early Holocene in this part of the Australian sub-tropics.
View less >
Journal Title
Climate of the Past
Volume
12
Copyright Statement
© Author(s) 2016. This work is distributed under
the Creative Commons Attribution 3.0 License.
Subject
Physical Geography and Environmental Geoscience not elsewhere classified
Physical Geography and Environmental Geoscience