Inter-annual and intra-annual tree-ring oxygen isotope signals in response to monsoon rainfall in northwestern Thailand
Preechamart S, Pumijumnong N, Bräuning A, Muangsong C, Cai B, Buajan S (2022)
Publication Type: Journal article
Publication year: 2022
Journal
DOI: 10.1177/09596836221138352
Abstract
We present a new teak (Tectona grandis L.f.) tree-ring stable oxygen isotope (delta O-18(TR)) chronology from Mae Tuen (MT) site, Tak province, northwestern Thailand at inter-annual (167-year, A.D.1850-2016) and intra-annual (A.D.2006-2016) timescales. The inter-annual delta O-18(TR) chronology showed a significant negative correlation (r = -0.678, p < 0.01) with the May-October amount of regional rainfall obtained from CRU TS4.03. We established a linear regression model that explained 46.0% of the actual rainfall variance and reconstructed monsoon season rainfall back to A.D.1850. The seasonal variations in moisture conditions were reflected in inter-annual delta O-18(TR) variability. The rainfall amount and delta O-18 in precipitation (delta O-18(p)) mainly controlled intra-annual variations in teak delta O-18(TR). These results show that the variation in Thai teak delta O-18(TR) is dominated by rainfall, highlighting the strength of delta O-18(TR) as a monsoon rainfall proxy.
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Thailand (TH)
China (CN)How to cite
APA:
Preechamart, S., Pumijumnong, N., Bräuning, A., Muangsong, C., Cai, B., & Buajan, S. (2022). Inter-annual and intra-annual tree-ring oxygen isotope signals in response to monsoon rainfall in northwestern Thailand. Holocene. https://dx.doi.org/10.1177/09596836221138352
MLA:
Preechamart, Sineenart, et al. "Inter-annual and intra-annual tree-ring oxygen isotope signals in response to monsoon rainfall in northwestern Thailand." Holocene (2022).
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