Contrasting Common Era climate and hydrology sensitivities from paired lake sediment dinosterol hydrogen isotope records in the South Pacific Convergence Zone

Accepted/In Press date: 10 February 2022

Published date: 1 April 2022

Additional Information: Funding Information: This material is based upon work supported by the US National Science Foundation under Grant Nos. 0823503 and 1502417 to J.P.S. A University of Washington Program on Climate Change Fellowship, IGERT Ocean Change Fellowship [grant #NSF1068839], Princeton University Department of Geosciences Harry H. Hess postdoctoral Fellowship, and Simons Foundation Fellowship [732763] provided partial research support for A.E.M; IGERT Ocean Change mini-research awards, and a University of Washington Quaternary Research Center research award to A.E.M. The Explorers Club Exploration Fund Grant, Gilchrist Expedition Grant and Royal Geographical Society (with IBG) Monica Cole Grant assisted with Samoa travel. Lake Lanoto'o data was funded under a Natural Environment Research Council (NERC) Studentship to J.D.H. Funding for Lake Emaotul research was provided by NERC Grant NE/N006674/1. UBA 14C date was funded by a NERC SPITFIRE PhD Scholarship and sampled by Nichola Strandberg. We are grateful for permission from Wallis civic and traditional authorities. Sample collection in ‘Uvea benefitted from the assistance of K. Manufeki, S. Tauvale, C. Manry and others from Service de L'Environment, M. Fotuaika, J.-F. Poncet, P. Nicomette, S. Felomaki, P. Tauvale, C. Chauvet, and the planning assistance from C. Lique, M. Bridoux, and C. Altman. Field work in ‘Upolu, Samoa was kindly permitted by Taule'ale'ausmai Laavasa Malua, Chief Executive Officer, Niualuga Evaimalo and staff in Ministry Natural Resources and Environment; field assistance was provided by Josie Hill, Lucy, Tinifu, Solomano and Ai. Tom Bishop assisted with field work on Vanuatu. M. Wolfshorndl, T. Magee, J. Rodysill, and K. Brady assisted with splitting and scanning cores at LacCore. We thank C. Kaapu-Lyons, N. Wallsgrove, and B. Popp for analyzing Wallis water samples. T. Fonville performed the preliminary assessment of microfossils. M. Wolhowe and J. Gregerson assisted with instrument maintenance and M. Wolhowe made two new Vanuatu δ2Hdinosterol measurements. D. Xue analyzed ions and metals in Lac Lalolalo samples. Conversations with L. Thompson, S. PoChedley, R. Echols, J. Scheff, S. Rushley, D. Battisti, R. Wood, K. Thirumalai, N. Williams, W.J. D'Andrea and constructive comments from A.E. Ingalls, and P. Quay greatly improved this manuscript. Any use of trade, firm, or product names is for descriptive purposes only and does not imply endorsement by the U.S. Government. We thank S.N. Ladd for providing careful feedback on this project and helpful edits on the manuscript. We thank Editor P. Rioual and two anonymous reviewers for their helpful and constructive comments that improved this work. Funding Information: This material is based upon work supported by the US National Science Foundation under Grant Nos. 0823503 and 1502417 to J.P.S. A University of Washington Program on Climate Change Fellowship, IGERT Ocean Change Fellowship [grant # NSF1068839 ], Princeton University Department of Geosciences Harry H. Hess postdoctoral Fellowship, and Simons Foundation Fellowship [ 732763 ] provided partial research support for A.E.M; IGERT Ocean Change mini-research awards, and a University of Washington Quaternary Research Center research award to A.E.M. The Explorers Club Exploration Fund Grant, Gilchrist Expedition Grant and Royal Geographical Society (with IBG) Monica Cole Grant assisted with Samoa travel. Lake Lanoto'o data was funded under a Natural Environment Research Council ( NERC ) Studentship to J.D.H. Funding for Lake Emaotul research was provided by NERC Grant NE/N006674/1 . UBA 14 C date was funded by a NERC SPITFIRE PhD Scholarship and sampled by Nichola Strandberg. We are grateful for permission from Wallis civic and traditional authorities. Sample collection in ‘Uvea benefitted from the assistance of K. Manufeki, S. Tauvale, C. Manry and others from Service de L'Environment, M. Fotuaika, J.-F. Poncet, P. Nicomette, S. Felomaki, P. Tauvale, C. Chauvet, and the planning assistance from C. Lique, M. Bridoux, and C. Altman. Field work in ‘Upolu, Samoa was kindly permitted by Taule'ale'ausmai Laavasa Malua, Chief Executive Officer, Niualuga Evaimalo and staff in Ministry Natural Resources and Environment; field assistance was provided by Josie Hill, Lucy, Tinifu, Solomano and Ai. Tom Bishop assisted with field work on Vanuatu. M. Wolfshorndl, T. Magee, J. Rodysill, and K. Brady assisted with splitting and scanning cores at LacCore. We thank C. Kaapu-Lyons, N. Wallsgrove, and B. Popp for analyzing Wallis water samples. T. Fonville performed the preliminary assessment of microfossils. M. Wolhowe and J. Gregerson assisted with instrument maintenance and M. Wolhowe made two new Vanuatu δ 2 H dinosterol measurements. D. Xue analyzed ions and metals in Lac Lalolalo samples. Conversations with L. Thompson, S. PoChedley, R. Echols, J. Scheff, S. Rushley, D. Battisti, R. Wood, K. Thirumalai, N. Williams, W.J. D'Andrea and constructive comments from A.E. Ingalls, and P. Quay greatly improved this manuscript. Any use of trade, firm, or product names is for descriptive purposes only and does not imply endorsement by the U.S. Government . We thank S.N. Ladd for providing careful feedback on this project and helpful edits on the manuscript. We thank Editor P. Rioual and two anonymous reviewers for their helpful and constructive comments that improved this work. Publisher Copyright: © 2022

Keywords: Dinosterol, Holocene, Hydrogen isotopes, Lakes, Organic geochemistry, Paleohydrology, Paleolimnology, SPCZ, Sedimentology, Tropical Pacific

Local EPrints ID: 455750

URI: http://eprints.soton.ac.uk/id/eprint/455750

DOI: doi:10.1016/j.quascirev.2022.107421

ISSN: 0277-3791

PURE UUID: 7811ad4c-44dd-4f86-9f6f-15dab82b8239

ORCID for David Sear: orcid.org/0000-0003-0191-6179

ORCID for Peter Langdon: orcid.org/0000-0003-2724-2643

Date deposited: 31 Mar 2022 17:06

Last modified: 17 Mar 2024 07:10