Статья

Climate variations of Central Asia on orbital to millennial timescales

Hai ChengDepartment of Earth Sciences, University of Minnesota, Minneapolis, USAChristoph SpötlInstitute of Geology, Universität Innsbruck, Innsbruck, AustriaSebastian F. M. BreitenbachGodwin Laboratory, Department of Earth Science, University of Cambridge, Cambridge, UKAshish SinhaDepartment of Earth Sciences, California State University Dominguez Hills, Carson, USAJasper A. WassenburgInstitute for Geosciences, Johannes Gutenberg-Universität Mainz, GermanyKlaus Peter JochumClimate Geochemistry Department, Max Planck Institute for Chemistry, Mainz, GermanyDenis ScholzInstitute for Geosciences, Johannes Gutenberg-Universität Mainz, GermanyXianglei LiInstitute of Global Environmental Change, Xi'an Jiaotong University, Xi'an, ChinaLiang YiSanya Institute of Deep Sea Science and Engineering, CAS, Sanya, ChinaYoubing PengInstitute of Global Environmental Change, Xi'an Jiaotong University, Xi'an, ChinaYanbin LvInstitute of Global Environmental Change, Xi'an Jiaotong University, Xi'an, ChinaPingzhong ZhangSchool of Geological Sciences and Mineral Resources, Lanzhou University, Lanzhou, ChinaAntonina A. VotintsevaNuffield Department of Clinical Medicine, University of Oxford, Oxford, UKVadim LoginovYoufeng NingInstitute of Global Environmental Change, Xi'an Jiaotong University, Xi'an, ChinaGayatri KathayatInstitute of Global Environmental Change, Xi'an Jiaotong University, Xi'an, ChinaR. Lawrence EdwardsDepartment of Earth Sciences, University of Minnesota, Minneapolis, USA

2016en

ABI

Аннотация

The extent to which climate variability in Central Asia is causally linked to large-scale changes in the Asian monsoon on varying timescales remains a longstanding question. Here we present precisely dated high-resolution speleothem oxygen-carbon isotope and trace element records of Central Asia's hydroclimate variability from Tonnel'naya cave, Uzbekistan, and Kesang cave, western China. On orbital timescales, the supra-regional climate variance, inferred from our oxygen isotope records, exhibits a precessional rhythm, punctuated by millennial-scale abrupt climate events, suggesting a close coupling with the Asian monsoon. However, the local hydroclimatic variability at both cave sites, inferred from carbon isotope and trace element records, shows climate variations that are distinctly different from their supra-regional modes. Particularly, hydroclimatic changes in both Tonnel'naya and Kesang areas during the Holocene lag behind the supra-regional climate variability by several thousand years. These observations may reconcile the apparent out-of-phase hydroclimatic variability, inferred from the Holocene lake proxy records, between Westerly Central Asia and Monsoon Asia.

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Идентификаторы

DOI: 10.1038/srep36975

Цитирования и источники

Цитирований: 3Использованных источников: 0

Показатели — AkademScholar