Articles | Volume 19, issue 7
https://doi.org/10.5194/cp-19-1383-2023
© Author(s) 2023. This work is distributed under
the Creative Commons Attribution 4.0 License.
the Creative Commons Attribution 4.0 License.
https://doi.org/10.5194/cp-19-1383-2023
© Author(s) 2023. This work is distributed under
the Creative Commons Attribution 4.0 License.
the Creative Commons Attribution 4.0 License.
Research article
| 
18 Jul 2023
Research article |
| 18 Jul 2023
| 18 Jul 2023
Hydrological change in southern Australia over 1750 years: a bivalve oxygen isotope record from the Coorong Lagoon
Briony Kate Chamberlayne
Department of Earth Sciences and Sprigg Geobiology Centre, The University of Adelaide, Adelaide, 5005, Australia
Jonathan James Tyler
CORRESPONDING AUTHOR
Department of Earth Sciences and Sprigg Geobiology Centre, The University of Adelaide, Adelaide, 5005, Australia
Deborah Haynes
Department of Earth Sciences and Sprigg Geobiology Centre, The University of Adelaide, Adelaide, 5005, Australia
Department of Geography, Environment and Population, and Sprigg Geobiology Centre, The University of Adelaide, Adelaide, 5005, Australia
Yuexiao Shao
Department of Earth Sciences and Sprigg Geobiology Centre, The University of Adelaide, Adelaide, 5005, Australia
John Tibby
Department of Geography, Environment and Population, and Sprigg Geobiology Centre, The University of Adelaide, Adelaide, 5005, Australia
Bronwyn May Gillanders
Southern Seas Ecology Laboratories and the Environment Institute, School of Biological Sciences, The University of Adelaide, Adelaide, 5005, Australia
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Short summary
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We used a random forest approach to produce estimates of monthly precipitation stable isotope variability from 1962–2023, at high resolution across the entire Australian continent. Comprehensive skill and sensitivity testing shows that our random forest models skilfully predict precipitation isotope values in places and times that observations are not available. We make all outputs publicly available, facilitating use in fields from ecology and hydrology to archaeology and forensic science.
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This paper presents SahulCHAR, a new collection of palaeofire (ancient fire) records from Australia, New Guinea, and New Zealand. SahulCHAR version 1 contains 687 records of sedimentary charcoal or black carbon, including digitized data, records from existing databases, and original author-submitted data. SahulCHAR is a much-needed update to past charcoal compilations that will also provide greater representation of records from this region in future global syntheses to understand past fire.
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Short summary
We used geochemical signals in shells preserved in sediments to create a 1750-year record of hydrological change in the Coorong Lagoon of South Australia. The record is interpreted to reflect the balance of evaporation and precipitation and shows that it has always been a highly evaporated system. The record also shows similarities to other environmental reconstructions from the region. This knowledge can increase our understanding of the potential impacts of environmental change.
We used geochemical signals in shells preserved in sediments to create a 1750-year record of...
