Rex, C. L. , Tyler, J. J., Nagaya, K., Staff, R. , Leng, M. J., Yamada, K., Kitaba, I., Kitagawa, J., Kojima, H. and Nakagawa, T. (2024) The contemporary stable isotope hydrology of Lake Suigetsu and surrounding catchment (Japan) and its implications for sediment-derived palaeoclimate records. Quaternary Science Advances, 13, 100145. (doi: 10.1016/j.qsa.2023.100145)
![[img]](https://eprints.gla.ac.uk/style/images/fileicons/text.png) |
Text
309801.pdf - Published Version Available under License Creative Commons Attribution. 10MB |
Abstract
The Lake Suigetsu sediment cores exemplify a high-quality archive of palaeoclimatic change in East Asia during the past 150 ka. Robust interpretation of stable isotope-based proxy reconstructions from the Suigetsu cores can be aided by a greater understanding of the factors affecting the isotope composition of the lake and how it relates to that of precipitation. Here we use extended contemporary monitoring to establish the factors affecting the stable isotope composition (δ18O, δ2H and d-excess) of precipitation, river water and lake water in the catchment surrounding Lake Suigetsu, central Japan. We show that the composition of precipitation is influenced by the dual East Asian Monsoon system, producing minima in δ18O and δ2H and semi-annually varying d-excess values across the year. These signals are then transferred to the lake system, where they are combined with secondary local influences on lake water composition: homogenisation with existing catchment waters, a catchment transit lag, the interaction with saline water from the nearby Sea of Japan, and evaporative enrichment during summer. Our observations suggest that the palaeo-isotope composition of Lake Suigetsu was closely related to the behaviour of the East Asian Monsoon. We highlight lake stratification and proxy seasonality as critical components of signal interpretation.
| Item Type: | Articles |
|---|---|
| Additional Information: | This research was financially supported by an Australian Research Council Discovery Project [grant number DP200101768], a JSPS KAKENHI Grant [grant number 19K20442] and C.L.Rex was supported by the NERC IAPETUS2 Doctoral Training Partnership. |
| Status: | Published |
| Refereed: | Yes |
| Glasgow Author(s) Enlighten ID: | Rex, Charlie and Staff, Dr Richard |
| Authors: | Rex, C. L., Tyler, J. J., Nagaya, K., Staff, R., Leng, M. J., Yamada, K., Kitaba, I., Kitagawa, J., Kojima, H., and Nakagawa, T. |
| College/School: | College of Science and Engineering > Scottish Universities Environmental Research Centre |
| Journal Name: | Quaternary Science Advances |
| Publisher: | Elsevier |
| ISSN: | 2666-0334 |
| Published Online: | 22 November 2023 |
| Copyright Holders: | Copyright © 2023 The Author(s) |
| First Published: | First published in Quaternary Science Advances 13:100145 |
| Publisher Policy: | Reproduced under a Creative Commons licence |
| Data DOI: | https://doi.org/10.5525/gla.researchdata.1429 |
University Staff: Request a correction | Enlighten Editors: Update this record
Funder and Project Information
Funder and Project Information