气候变化领域集成服务门户(CCPortal): Triassic-Jurassic climate in continental high-latitude Asia was dominated by obliquity-paced variations (Junggar Basin; Ürümqi; China)

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DOI	10.1073/pnas.1501137112
	Triassic-Jurassic climate in continental high-latitude Asia was dominated by obliquity-paced variations (Junggar Basin; Ürümqi; China)
	Sha J.; Olsen P.E.; Pan Y.; Xu D.; Wang Y.; Zhang X.; Yao X.; Vajda V.
发表日期	2015
ISSN	0027-8424
起始页码	3624
结束页码	3629
卷号	112 期号:12
英文摘要	Empirical constraints on orbital gravitational solutions for the Solar System can be derived from the Earth's geological record of past climates. Lithologically based paleoclimate data from the thick, coal-bearing, fluvial-lacustrine sequences of the Junggar Basin of Northwestern China (paleolatitude ∼60°) show that climate variability of the warm and glacier-free high latitudes of the latest Triassic-Early Jurassic (∼198-202 Ma) Pangea was strongly paced by obliquity-dominated (∼40 ky) orbital cyclicity, based on an age model using the 405-ky cycle of eccentricity. In contrast, coeval low-latitude continental climate was much more strongly paced by climatic precession, with virtually no hint of obliquity. Although this previously unknown obliquity dominance at high latitude is not necessarily unexpected in a high CO2 world, these data deviate substantially from published orbital solutions in period and amplitude for eccentricity cycles greater than 405 ky, consistent with chaotic diffusion of the Solar System. In contrast, there are indications that the Earth-Mars orbital resonance was in today's 2-to-1 ratio of eccentricity to inclination. These empirical data underscore the need for temporally comprehensive, highly reliable data, as well as new gravitational solutions fitting those data. © 2015, National Academy of Sciences. All rights reserved.
英文关键词	Lacustrine sediments; Obliquity cycle; Orbital forcing; Solar system chaos; Triassic-Jurassic
语种	英语
scopus关键词	carbon dioxide; Article; astronomy; climate; climate change; glacier; Jurassic; latitude; Lower Jurassic; Mesozoic; paleoclimate; periodicity; priority journal; Triassic
来源期刊	Proceedings of the National Academy of Sciences of the United States of America
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/159095
作者单位	Sha, J., State Key Laboratory of Palaeobiology and Stratigraphy, Nanjing Institute of Geology and Paleontology, Nanjing, 210008, China; Olsen, P.E., Lamont-Doherty Earth Observatory of Columbia University, Palisades, NY 10968, United States; Pan, Y., State Key Laboratory of Palaeobiology and Stratigraphy, Nanjing Institute of Geology and Paleontology, Nanjing, 210008, China; Xu, D., Institute of Geology, China Earthquake Administration, Beijing, 100029, China; Wang, Y., State Key Laboratory of Palaeobiology and Stratigraphy, Nanjing Institute of Geology and Paleontology, Nanjing, 210008, China; Zhang, X., Chinese Academy of Sciences Key Laboratory of Crust-Mantle Materials and Environments, School of Earth and Space Sciences, University of Science and Technology of China, Heifei, 230026, China; Yao, X., State Key Laboratory of Palaeobiology and Stratigraphy, Nanjing Institute of Geology and Paleontology, Nanjing, 210008, China; Vajda, V., Department of Geology, Lund University, Lund, 223 62, Sweden, Depa...
推荐引用方式 GB/T 7714	Sha J.,Olsen P.E.,Pan Y.,et al. Triassic-Jurassic climate in continental high-latitude Asia was dominated by obliquity-paced variations (Junggar Basin; Ürümqi; China)[J],2015,112(12).
APA	Sha J..,Olsen P.E..,Pan Y..,Xu D..,Wang Y..,...&Vajda V..(2015).Triassic-Jurassic climate in continental high-latitude Asia was dominated by obliquity-paced variations (Junggar Basin; Ürümqi; China).Proceedings of the National Academy of Sciences of the United States of America,112(12).
MLA	Sha J.,et al."Triassic-Jurassic climate in continental high-latitude Asia was dominated by obliquity-paced variations (Junggar Basin; Ürümqi; China)".Proceedings of the National Academy of Sciences of the United States of America 112.12(2015).