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dc.contributor.authorLorrey, Andrew M.en_NZ
dc.contributor.authorWilliams, Paul W.en_NZ
dc.contributor.authorWoolley, John-Marken_NZ
dc.contributor.authorFauchereau, Nicolas C.en_NZ
dc.contributor.authorHartland, Adamen_NZ
dc.contributor.authorBostock, Helenen_NZ
dc.contributor.authorEaves, Shaunen_NZ
dc.contributor.authorLachniet, Matthew S.en_NZ
dc.contributor.authorRenwick, James A.en_NZ
dc.contributor.authorVarma, Vidyaen_NZ
dc.date.accessioned2020-09-01T21:42:10Z
dc.date.available2020-09-01T21:42:10Z
dc.date.issued2020
dc.identifier.citationLorrey, A. M., Williams, P. W., Woolley, J.-M., Fauchereau, N. C., Hartland, A., Bostock, H., … Varma, V. (2020). Late Quaternary climate variability and change from Aotearoa New Zealand speleothems: Progress in age modelling, oxygen isotope master record construction and proxy-model comparisons. Quaternary, 3(3), 24. https://doi.org/10.3390/quat3030024en
dc.identifier.urihttps://hdl.handle.net/10289/13783
dc.description.abstractWe re-evaluated speleothem isotope series from Aotearoa New Zealand that were recently contributed to the Speleothem Isotopes Synthesis and AnaLysis (SISAL) database. COnstructing Proxy Records from Age Models (COPRA) software was used to produce Bayesian age models for those speleothems. The new age modelling helped us examine Late Quaternary temporal coverage for the national speleothem network, and also supported our exploration of three different isotope master record generation techniques using Holocene δ¹⁸O data from Waitomo. We then applied the output from one of the isotope master record techniques to test an application case of how climate transfer functions can be developed using climate model simulated temperatures. Our results suggest Holocene δ¹⁸O trends at Waitomo capture air temperature variations weighted toward the primary season of soil moisture (and epikarst) recharge during winter. This interpretation is consistent with the latest monitoring data from the Waitomo region. Holocene δ¹⁸O millennial-scale trends and centennial-scale variability at Waitomo likely reflect atmospheric circulation patterns that concomitantly vary with surface water temperature and the isotopic composition of the Tasman Sea. A climate model simulation context for the Holocene millennial-scale trends in the Waitomo δ¹⁸O isotope master record suggest that site is sensitive to changes in the subtropical front (STF) and the Tasman Front. Our comparison of isotope master record techniques using Waitomo δ¹⁸O data indicate that caution is needed prior to merging δ¹⁸O data series from different caves in order to avoid time series artefacts. Future work should incorporate more high-resolution cave monitoring and climate calibration studies, and develop new speleothem data from northern and eastern regions of the country.en_NZ
dc.format.mimetypeapplication/pdf
dc.language.isoenen_NZ
dc.publisherMDPI AGen_NZ
dc.rightsThis is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
dc.titleLate Quaternary climate variability and change from Aotearoa New Zealand speleothems: Progress in age modelling, oxygen isotope master record construction and proxy-model comparisonsen_NZ
dc.typeJournal Article
dc.identifier.doi10.3390/quat3030024en_NZ
dc.relation.isPartOfQuaternaryen_NZ
pubs.begin-page24
pubs.elements-id256273
pubs.issue3en_NZ
pubs.publication-statusPublished onlineen_NZ
pubs.volume3en_NZ
dc.identifier.eissn2571-550Xen_NZ


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