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https://hdl.handle.net/10356/143905
Title: | On the glacial-interglacial variability of the Asian monsoon in speleothem δ18O records | Authors: | Liu, Guangxin Li, X. Chiang, Hong-Wei Cheng, H. Yuan, S. Chawchai, S. He, S. Lu, Yanbin Aung, Lin Thu Maung, P. M. Tun, W. N. Oo, K. M. Wang, Xianfeng |
Keywords: | Engineering::Environmental engineering | Issue Date: | 2020 | Source: | Liu, G., Li, X., Chiang, H.-W., Cheng, H., Yuan, S., Chawchai, S., . . . Wang, X. (2020). On the glacial-interglacial variability of the Asian monsoon in speleothem δ18O records. Science Advances, 6(7), eaay8189-. doi:10.1126/sciadv.aay8189 | Journal: | Science Advances | Abstract: | While Asian monsoon (AM) changes have been clearly captured in Chinese speleothem oxygen isotope (δ18O) records, the lack of glacial-interglacial variability in the records remains puzzling. Here, we report speleothem δ18O records from three locations along the trajectory of the Indian summer monsoon (ISM), a major branch of the AM, and characterize AM rainfall over the past 180,000 years. We have found that the records close to the monsoon moisture source show large glacial-interglacial variability, which then decreases landward. These changes likely reflect a stronger oxygen isotope fractionation associated with progressive rainout of AM moisture during glacial periods, possibly due to a larger temperature gradient and suppressed plant transpiration. We term this effect, which counteracts the forcing of glacial boundary conditions, the moisture transport pathway effect. | URI: | https://hdl.handle.net/10356/143905 | ISSN: | 2375-2548 | DOI: | 10.1126/sciadv.aay8189 | Rights: | © 2020 The Authors, some rights reserved; exclusive licensee American Association for the Advancement of Science. No claim to original U.S. Government Works. Distributed under a Creative Commons Attribution NonCommercial License 4.0 (CC BY-NC). | Fulltext Permission: | open | Fulltext Availability: | With Fulltext |
Appears in Collections: | IGS Journal Articles |
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