气候变化领域集成服务门户(CCPortal): Structure of the Freshened Surface Layer in the Kara Sea During Ice-Free Periods

CCPortal

DOI	10.1029/2020JC016486
	Structure of the Freshened Surface Layer in the Kara Sea During Ice-Free Periods
	Osadchiev A.A.; Frey D.I.; Shchuka S.A.; Tilinina N.D.; Morozov E.G.; Zavialov P.O.
发表日期	2021
ISSN	21699275
卷号	126 期号:1
英文摘要	This work is focused on the seasonal and interannual variability of the freshened surface layer (FSL) in the Kara Sea during ice-free periods. The majority of annual freshwater runoff inflows to the Kara Sea during the freshet period in June–July. As a result, a large low-salinity and strongly stratified FSL is formed in the central Kara Sea at the beginning of the ice-free period. Initially, this layer is fresh with salinities of less than 15. Then, in August–October, river discharge steadily decreases, the fresh (<15) and strongly stratified river plume remains limited to the inner part of the FSL adjacent to the Ob and Yenisei gulfs, which receives reduced freshwater discharge. The area of the fresh plume steadily decreases with decreasing of river discharge; in October, it remains only within the Ob and Yenisei gulfs. Area and position of the outer part of the FSL, on the opposite, remain stable until the end of ice-free period. Salinities in the outer part steadily increase to 20–25, vertical salinity gradients at the boundary with the subjacent sea decrease, albeit remain prominent. Area and position of the FSL also have low interannual variability, because the volume of river runoff during freshet period in June–July is stable on interannual time scale. As a result, downward freshwater transport and the formation of the seasonal halocline occur in August–October at the stable area located in the central Kara Sea. © 2020. American Geophysical Union. All Rights Reserved.
英文关键词	Arctic Ocean; mixing; river plume; ROFI; stratification; surface layer
语种	英语
来源期刊	Journal of Geophysical Research: Oceans
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/186525
作者单位	Shirshov Institute of Oceanology, Russian Academy of Sciences, Moscow, Russian Federation; Institute of Geology of Ore Deposits, Petrography, Mineralogy and Geochemistry, Russian Academy of Sciences, Moscow, Russian Federation; Moscow Institute of Physics and Technology, Dolgoprudny, Russian Federation; National Research Tomsk State University, Tomsk, Russian Federation
推荐引用方式 GB/T 7714	Osadchiev A.A.,Frey D.I.,Shchuka S.A.,et al. Structure of the Freshened Surface Layer in the Kara Sea During Ice-Free Periods[J],2021,126(1).
APA	Osadchiev A.A.,Frey D.I.,Shchuka S.A.,Tilinina N.D.,Morozov E.G.,&Zavialov P.O..(2021).Structure of the Freshened Surface Layer in the Kara Sea During Ice-Free Periods.Journal of Geophysical Research: Oceans,126(1).
MLA	Osadchiev A.A.,et al."Structure of the Freshened Surface Layer in the Kara Sea During Ice-Free Periods".Journal of Geophysical Research: Oceans 126.1(2021).