气候变化领域集成服务门户(CCPortal): High-resolution climate change during the Marine Isotope Stage 3 revealed by Zhouqu loess in the eastern margin of the Tibetan Plateau

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DOI	10.1177/03091333241236394
	High-resolution climate change during the Marine Isotope Stage 3 revealed by Zhouqu loess in the eastern margin of the Tibetan Plateau
	Chen, Zixuan; Li, Qiong; Li, Pushuang; Zhou, Jiantao; Su, Yating; Liu, Weiming; Luo, Yuanlong; Wen, Chen; Xu, Xuechao; Yang, Shengli
发表日期	2024
ISSN	0309-1333
EISSN	1477-0296
起始页码	48
结束页码	2
卷号	48 期号:2
英文摘要	A consensus has not yet been reached on effects of climate change and driving mechanisms between the Tibetan Plateau (TP) and adjacent monsoonal areas during the Marine Isotope Stage 3 (MIS 3). Loess-paleosol sequences from the TP provide valuable information about the MIS 3 environmental history. Detailed color index and a diffuse reflectance spectral (DRS) analysis of Zhouqu (ZQ) loess from the Western Qinling Mountains were conducted to investigate climate change on the eastern margin of the TP during the MIS 3. Our results show that the variations in color index and iron oxide content in ZQ loess are mainly caused by the pedogenesis and climate conditions. The lightness (L*) value and hematite (Hm) content were used to reconstruct the precipitation history and temperature changes, respectively. The reconstructed records revealed that climate change during the MIS 3 was characterized by high frequency and large amplitude, with millennial-scale changes superimposed on orbital-scale changes. Warm-humid climate occurred in the late MIS 3, while the early climate of MIS 3 was relatively cold-dry. The Indian summer monsoon (ISM) and temperature variations during the MIS 3 mainly occurred due to obliquity and precession. The North Atlantic cooling led to the southward movement of the Intertropical Convergence Zone, and the downstream cooling of the atmosphere by the westerly jet could result in events on a millennial-scale in the eastern margin of the TP. The interhemispheric forcing may play an important role in driving the strong summer monsoon in the late MIS 3.
英文关键词	Loess; soil color; iron oxide; diffuse reflectance spectral; Indian summer monsoon; temperature
语种	英语
WOS研究方向	Physical Geography ; Geology
WOS类目	Geography, Physical ; Geosciences, Multidisciplinary
WOS记录号	WOS:001168752600001
来源期刊	PROGRESS IN PHYSICAL GEOGRAPHY-EARTH AND ENVIRONMENT
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/308599
作者单位	Lanzhou University; Jiaying University; Chinese Academy of Sciences; Institute of Mountain Hazards & Environment, CAS; Lanzhou University
推荐引用方式 GB/T 7714	Chen, Zixuan,Li, Qiong,Li, Pushuang,et al. High-resolution climate change during the Marine Isotope Stage 3 revealed by Zhouqu loess in the eastern margin of the Tibetan Plateau[J],2024,48(2).
APA	Chen, Zixuan.,Li, Qiong.,Li, Pushuang.,Zhou, Jiantao.,Su, Yating.,...&Yang, Shengli.(2024).High-resolution climate change during the Marine Isotope Stage 3 revealed by Zhouqu loess in the eastern margin of the Tibetan Plateau.PROGRESS IN PHYSICAL GEOGRAPHY-EARTH AND ENVIRONMENT,48(2).
MLA	Chen, Zixuan,et al."High-resolution climate change during the Marine Isotope Stage 3 revealed by Zhouqu loess in the eastern margin of the Tibetan Plateau".PROGRESS IN PHYSICAL GEOGRAPHY-EARTH AND ENVIRONMENT 48.2(2024).