Sulphur: a proxy for wildfires in stalagmites

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dc.contributor.authorColeborn, Ken_AU
dc.contributor.authorBaker, AAen_AU
dc.contributor.authorTreble, PCen_AU
dc.contributor.authorWynn, Pen_AU
dc.date.accessioned2020-06-11T06:44:09Zen_AU
dc.date.available2020-06-11T06:44:09Zen_AU
dc.date.issued2018-12-12en_AU
dc.date.statistics2020-06-01en_AU
dc.description.abstractBushfires are a global hazard that can have catastrophic impacts on communities and ecosystems. However, there is limited baseline data on how fire frequency and intensity have responded to climate change in the past. A speleothem-based bushfire record will allow us to determine long-term natural fire regimes and better understand the relationship between bushfires and climate. Recent research has demonstrated the potential of using sulphur as a speleothem paleofire proxy1 but a full characterisation of S in the karst environments of SW Western Australia is lacking. Here, we quantify the relative contributions of different sources of sulphur in a modern cave environment through the characterisation of rainfall, soil, bedrock, vegetation and cave drip water sulphate concentration and isotopic values (δ18O- SO4 and δ34S- SO4) to assess the role of sulphur cycling through the biomass in response to burn events at this site. This information will be used to interpret the SO4 isotope record, supported by other proxies in a 2-12 ka speleothem from SW Western Australia. This is the first speleothem SO4 isotope study in the southern hemisphere and the first in the world to use speleothem S isotopes in a paleofire context. © Author(s)en_AU
dc.identifier.citationColeborn, K., Baker, A., Treble, P., & Wynn, P. (2018). Sulphur: a proxy for wildfires in stalagmites. Paper presented at the AQUA Biennial Conference, Canberra, 10-14th December 2018. (pp. 27). Retrieved from: https://aqua.org.au/wp-content/uploads/2019/10/AQUA-2018-Program.pdfen_AU
dc.identifier.conferenceenddate14 December 2018en_AU
dc.identifier.conferencenameAQUA Biennial Conferenceen_AU
dc.identifier.conferenceplaceCanberra, Australiaen_AU
dc.identifier.conferencestartdate10 December 2018en_AU
dc.identifier.govdoc9648en_AU
dc.identifier.pagination27en_AU
dc.identifier.urihttps://aqua.org.au/wp-content/uploads/2019/10/AQUA-2018-Program.pdfen_AU
dc.identifier.urihttp://apo.ansto.gov.au/dspace/handle/10238/9585en_AU
dc.language.isoenen_AU
dc.publisherAustralasian Quaternary Association Inc.en_AU
dc.subjectSulfatesen_AU
dc.subjectFiresen_AU
dc.subjectFire hazardsen_AU
dc.subjectNatural disastersen_AU
dc.subjectCavesen_AU
dc.subjectEcosystemsen_AU
dc.subjectClimatic changeen_AU
dc.subjectAustraliaen_AU
dc.subjectWestern Australiaen_AU
dc.titleSulphur: a proxy for wildfires in stalagmitesen_AU
dc.typeConference Abstracten_AU
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