Holocene lake-level fluctuations in Lakes Keilambete and Gnotuk, southwestern Victoria, Australia
Reconstructed Holocene lake-level curves from two saline, hydrologically closed maar crater lakes in southwestern Victoria, Australia, show near synchronous lake-level changes throughout the Holocene. We show that lake levels, reconstructed from sediment particle size and ostracod valve chemistry (δ...
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Online Access: | http://dx.doi.org/10.1177/0959683612471983 http://journals.sagepub.com/doi/pdf/10.1177/0959683612471983 http://journals.sagepub.com/doi/full-xml/10.1177/0959683612471983 |
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crsagepubl:10.1177/0959683612471983 2024-04-28T08:24:23+00:00 Holocene lake-level fluctuations in Lakes Keilambete and Gnotuk, southwestern Victoria, Australia Wilkins, Daniel Gouramanis, Chris De Deckker, Patrick Fifield, L Keith Olley, Jon 2013 http://dx.doi.org/10.1177/0959683612471983 http://journals.sagepub.com/doi/pdf/10.1177/0959683612471983 http://journals.sagepub.com/doi/full-xml/10.1177/0959683612471983 en eng SAGE Publications http://journals.sagepub.com/page/policies/text-and-data-mining-license The Holocene volume 23, issue 6, page 784-795 ISSN 0959-6836 1477-0911 Paleontology Earth-Surface Processes Ecology Archeology Global and Planetary Change journal-article 2013 crsagepubl https://doi.org/10.1177/0959683612471983 2024-04-09T08:00:37Z Reconstructed Holocene lake-level curves from two saline, hydrologically closed maar crater lakes in southwestern Victoria, Australia, show near synchronous lake-level changes throughout the Holocene. We show that lake levels, reconstructed from sediment particle size and ostracod valve chemistry (δ 18 O and Sr/Ca) have undergone rapid (<100 yr), large (>10 m) fluctuations throughout the Holocene. Finer sampling resolution shows a more sensitive response to Holocene climate than was previously presented for Lake Keilambete. Both maar crater lakes show a short-lived maximum in Holocene lake levels around 7.2 ka. The period of lake filling leading to peak lake levels matches the phase of most effective precipitation (7.4–7.0 ka) reconstructed from a high-resolution speleothem record from northern Tasmania. Water levels declined in both lakes during the mid Holocene, with a more substantive decline after ~5 ka which coincides with the end of the Southern Hemisphere hypsithermal. Water levels continued to oscillate with a periodicity of around 300–700 years, before reaching a late-Holocene nadir around 1.8 ka (Keilambete) and 1.3 ka (Gnotuk). The trend and periodicity of oscillations in the maar water levels show commonalities to δD in the Dome C ice core, and suggest that temperature may be a significant component in influencing the Precipitation/Evaporation (P/E) ratio in southeastern Australia during the Holocene. Article in Journal/Newspaper ice core SAGE Publications The Holocene 23 6 784 795 |
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Open Polar |
collection |
SAGE Publications |
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crsagepubl |
language |
English |
topic |
Paleontology Earth-Surface Processes Ecology Archeology Global and Planetary Change |
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Paleontology Earth-Surface Processes Ecology Archeology Global and Planetary Change Wilkins, Daniel Gouramanis, Chris De Deckker, Patrick Fifield, L Keith Olley, Jon Holocene lake-level fluctuations in Lakes Keilambete and Gnotuk, southwestern Victoria, Australia |
topic_facet |
Paleontology Earth-Surface Processes Ecology Archeology Global and Planetary Change |
description |
Reconstructed Holocene lake-level curves from two saline, hydrologically closed maar crater lakes in southwestern Victoria, Australia, show near synchronous lake-level changes throughout the Holocene. We show that lake levels, reconstructed from sediment particle size and ostracod valve chemistry (δ 18 O and Sr/Ca) have undergone rapid (<100 yr), large (>10 m) fluctuations throughout the Holocene. Finer sampling resolution shows a more sensitive response to Holocene climate than was previously presented for Lake Keilambete. Both maar crater lakes show a short-lived maximum in Holocene lake levels around 7.2 ka. The period of lake filling leading to peak lake levels matches the phase of most effective precipitation (7.4–7.0 ka) reconstructed from a high-resolution speleothem record from northern Tasmania. Water levels declined in both lakes during the mid Holocene, with a more substantive decline after ~5 ka which coincides with the end of the Southern Hemisphere hypsithermal. Water levels continued to oscillate with a periodicity of around 300–700 years, before reaching a late-Holocene nadir around 1.8 ka (Keilambete) and 1.3 ka (Gnotuk). The trend and periodicity of oscillations in the maar water levels show commonalities to δD in the Dome C ice core, and suggest that temperature may be a significant component in influencing the Precipitation/Evaporation (P/E) ratio in southeastern Australia during the Holocene. |
format |
Article in Journal/Newspaper |
author |
Wilkins, Daniel Gouramanis, Chris De Deckker, Patrick Fifield, L Keith Olley, Jon |
author_facet |
Wilkins, Daniel Gouramanis, Chris De Deckker, Patrick Fifield, L Keith Olley, Jon |
author_sort |
Wilkins, Daniel |
title |
Holocene lake-level fluctuations in Lakes Keilambete and Gnotuk, southwestern Victoria, Australia |
title_short |
Holocene lake-level fluctuations in Lakes Keilambete and Gnotuk, southwestern Victoria, Australia |
title_full |
Holocene lake-level fluctuations in Lakes Keilambete and Gnotuk, southwestern Victoria, Australia |
title_fullStr |
Holocene lake-level fluctuations in Lakes Keilambete and Gnotuk, southwestern Victoria, Australia |
title_full_unstemmed |
Holocene lake-level fluctuations in Lakes Keilambete and Gnotuk, southwestern Victoria, Australia |
title_sort |
holocene lake-level fluctuations in lakes keilambete and gnotuk, southwestern victoria, australia |
publisher |
SAGE Publications |
publishDate |
2013 |
url |
http://dx.doi.org/10.1177/0959683612471983 http://journals.sagepub.com/doi/pdf/10.1177/0959683612471983 http://journals.sagepub.com/doi/full-xml/10.1177/0959683612471983 |
genre |
ice core |
genre_facet |
ice core |
op_source |
The Holocene volume 23, issue 6, page 784-795 ISSN 0959-6836 1477-0911 |
op_rights |
http://journals.sagepub.com/page/policies/text-and-data-mining-license |
op_doi |
https://doi.org/10.1177/0959683612471983 |
container_title |
The Holocene |
container_volume |
23 |
container_issue |
6 |
container_start_page |
784 |
op_container_end_page |
795 |
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1797584704287801344 |