干旱区生态环境知识资源中心(Arid): Sea-level changes in the Bohai Sea, northern China, constrained by coastal loess accumulation over the past 200 ka

Arid

DOI	10.1016/j.quascirev.2021.107368
	Sea-level changes in the Bohai Sea, northern China, constrained by coastal loess accumulation over the past 200 ka
	Yi, Shuangwen; Zeng, Lin; Xu, Zhiwei; Wang, Yao; Wang, Xianyan; Wu, Jiang; Lu, Huayu
通讯作者	Yi, SW
来源期刊	QUATERNARY SCIENCE REVIEWS
ISSN	0277-3791
EISSN	1873-457X
出版年	2022
卷号	277
英文摘要	Loess sequences are widely distributed in semi-arid regions around the world, and are sometimes also located in coastal zones. The accumulations of coastal loess provide a valuable record of both climate and sea-level changes. Here we report sedimentological and high sampling resolution luminescence dating evidence for such changes from two loess sequences from the Shandong Peninsula and Miaodao Archipelago near the coast of Bohai Sea in northern China. Both the quartz optically stimulated luminescence (OSL) and K-feldspar post-infrared IRSL (pIRIR(290)) signals show consistent and satisfactory luminescence characteristics up to similar to 100 ka, while the K-feldspar pIRIR(290) ages provide age control up to similar to 200 ka and are in stratigraphic order. With this fully independent age model, our results reveal that coastal loess accumulation is episodic with a high variability in apparent accumulation rates. After comparing with global and regional sea-level records, we find that the intervals with high accumulation rates coincide with global low sea-level stages, and that the loess sedimentary hiatuses indicated by nearly zero or very low accumulation rates at one site mainly correspond to global high sea-level stages, indicating the dominant role of global sea-level changes on coastal loess accumulation in the study area. We therefore conclude that regional marine regression mainly occurred during MIS 6, and MIS 5b to MIS 2, with extremely low regional sea levels possibly around 150 ka, 70-60 ka and 37-24 ka, while high sea-levels occurred during MIS 5e-5c and MIS 1. This study implies that coastal loess deposits with a good chronology could be used to constrain the timing of regional sea level change. (C) 2022 Elsevier Ltd. All rights reserved.
英文关键词	Coastal loess Regional sea-level change Luminescence chronology Paleoclimate change
类型	Article
语种	英语
收录类别	SCI-E
WOS记录号	WOS:000766906200020
WOS关键词	EAST-ASIAN MONSOON ; ICE VOLUME ; LUMINESCENCE SIGNALS ; QUARTZ ; OSL ; FELDSPAR ; DEPOSITS ; AGE ; PROVENANCE ; PROTOCOL
WOS类目	Geography, Physical ; Geosciences, Multidisciplinary
WOS研究方向	Physical Geography ; Geology
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/394102
推荐引用方式 GB/T 7714	Yi, Shuangwen,Zeng, Lin,Xu, Zhiwei,et al. Sea-level changes in the Bohai Sea, northern China, constrained by coastal loess accumulation over the past 200 ka[J],2022,277.
APA	Yi, Shuangwen.,Zeng, Lin.,Xu, Zhiwei.,Wang, Yao.,Wang, Xianyan.,...&Lu, Huayu.(2022).Sea-level changes in the Bohai Sea, northern China, constrained by coastal loess accumulation over the past 200 ka.QUATERNARY SCIENCE REVIEWS,277.
MLA	Yi, Shuangwen,et al."Sea-level changes in the Bohai Sea, northern China, constrained by coastal loess accumulation over the past 200 ka".QUATERNARY SCIENCE REVIEWS 277(2022).