Depositional environment in the southern Ulleung Basin, East Sea (Sea of Japan), during the last 48 000 years

doi:10.1007/s13131-010-0063-6

	Depositional environment in the southern Ulleung Basin, East Sea (Sea of Japan), during the last 48 000 years
	Liu Yanguang 1; Sha Longbin 2; Shi Xuefa 1; Suk Bong-Chool 3; Li Chaoxin 1; Wang Kunshan 1; Li Xiaoyan 1
刊名	ACTA OCEANOLOGICA SINICA
	2010-09
卷号	29 期号:5 页码:52-64
关键词	East Sea depositional environment East Asian monsoon Tsushima Warm Current
ISSN号	0253-505X
DOI	10.1007/s13131-010-0063-6
英文摘要	The present study is based on the sedimentological data from a piston core KCES1 off the southern Ulleung Basin margin, the East Sea (Sea of Japan). The data include sediment color (L*), X-ray radiographs; grain size distribution and AMS(14)C date. Four kinds of sediments (homogeneous, laminated, crudely laminated and hybrid sediments) are identified according to the characters of the sedimentary structures that were considered to reflect changes in bottom-water oxygenation. Alternations of dark laminated/crudely laminated sediments and light homogeneous sediments represent millennial-scale variations that are possibly associated with the high-resolution changes in the East Asian monsoon (EAM). The relative contributions of the East China Sea Coastal Water (ECSCW) and the Tsushima Warm Current (TWC) were likely the main reasons for the repetition of the anoxic and oxic depositional conditions in the East Sea since the last 48 ka BP. During the interstadial, the strengthen summer EAM was attributed to the expansion of the ECSCW because of more humid climate in central Asia, and then more strongly low-salinity, nutrient-enriched water was introduced into the East Sea. The ventilation of deep water was restricted and therefore the dark laminated layer deposited under the anoxic bottom water condition. During the lowest stand of sea level in the last glacial maximum (LGM), the isolated East Sea dominated by stratified water masses and the euxinic depositional environment formed. The homogenous sediments have been predominating since 17.5 ka BP indicating that the TWC has intruded into the East Sea gradually with the stepwise rise of sea level and the bottom water oxygen level was high. During the late Younger Dryas (YD) period, the last dark laminated layer deposited because the ventilation of bottom water was restricted by stronger summer EAM. The TWC strengthened and the bottom water became oxic again from 10.5 ka BP.
资助项目	Primary Science Foundation of First Institute of Oceanography[2007T09]
WOS关键词	TSUSHIMA WARM CURRENT ; LATE QUATERNARY ; PALEOENVIRONMENTAL CHANGES ; MILLENNIAL-SCALE ; LATE PLEISTOCENE ; GLACIAL MAXIMUM ; ORBITAL-SCALE ; PALEOCEANOGRAPHIC EVOLUTION ; PLANKTONIC-FORAMINIFERA ; INTERSTADIAL EVENTS
WOS研究方向	Oceanography
语种	英语
出版者	SPRINGER
WOS记录号	WOS:000286127300007
内容类型	期刊论文
源URL	[http://ir.fio.com.cn:8080/handle/2SI8HI0U/26698]
专题	自然资源部第一海洋研究所
通讯作者	Liu Yanguang
作者单位	1.State Ocean Adm, Inst Oceanog 1, Key Lab Marine Sedimentol & Environm Geol, Qingdao 266061, Peoples R China 2.E China Normal Univ, Dept Geog, Shanghai 200062, Peoples R China 3.KORDI, S Sea Res Inst, Geoje 656830, South Korea
推荐引用方式 GB/T 7714	Liu Yanguang,Sha Longbin,Shi Xuefa,et al. Depositional environment in the southern Ulleung Basin, East Sea (Sea of Japan), during the last 48 000 years[J]. ACTA OCEANOLOGICA SINICA,2010,29(5):52-64.
APA	Liu Yanguang.,Sha Longbin.,Shi Xuefa.,Suk Bong-Chool.,Li Chaoxin.,...&Li Xiaoyan.(2010).Depositional environment in the southern Ulleung Basin, East Sea (Sea of Japan), during the last 48 000 years.ACTA OCEANOLOGICA SINICA,29(5),52-64.
MLA	Liu Yanguang,et al."Depositional environment in the southern Ulleung Basin, East Sea (Sea of Japan), during the last 48 000 years".ACTA OCEANOLOGICA SINICA 29.5(2010):52-64.