Seasonal variability of the Kuroshio Current at the PN Section in the East China Sea based on in-situ observation from 1987 to 2010

IOCAS-IR

	Seasonal variability of the Kuroshio Current at the PN Section in the East China Sea based on in-situ observation from 1987 to 2010
	WEI Yanzhou; PEI Yuhua ; ZHANG Rong-Hua
发表期刊	Acta Oceanologica Sinica
ISSN	0253-505X
	2015-05-15
出版年	2015
卷号	v.34 期号:05 页码:16-25
文献类型	CNKI期刊论文
摘要	As the spatio-temporal variability of the Kuroshio is highly influenced by mesoscale eddies, representing its seasonal variability characteristics requires sufficiently long term observations to reduce the uncertainties.Geostrophic velocity data estimated from hydrographic observation from 1987 to 2010 and the shipboard ADCP velocity data from 1993 to 2008 at the PN Section in the central East China Sea are collected to view the seasonal variability objectively. From both types of observation, it is found that the seasonal climatology mean of the Kuroshio Current exhibits significant difference in three areas, which are located at the Kuroshio Current core and its two flanks in a shallow layer less than 300 m, with the weakest northeast current at the core in autumn, the strongest counter current on the right flank in spring, and the strongest northeast current on the left flank in autumn, respectively. The seasonal variance of the Kuroshio Current also exhibits significant difference on the offshore side of the Kuroshio, with larger variance in spring and summer while smaller variance in autumn and winter. For the current parallel to the PN Section, the ratio of the seasonal variability component to the intraseasonal variability component is relatively smaller than that for the current perpendicular to the PN Section.Further analyses indicate that the seasonal variability at the PN Section is tightly linked to the upstream and downstream current variability.
关键词	Kuroshio Current,seasonal variability,East China Sea,significance test
CNKI专辑号	A;
CNKI专辑名称	基础科学;
CNKI专题号	A010;
CNKI专题名称	海洋学;
分类号	P731.27
收录类别	中科院核心 ; 中科院扩展
语种	英文;
资助项目(基金）	The National Basic Research Program(973 Program)of China under contract Nos 2012CB956000 and 2011CB409803 ; the National Natural Science Foundation of China under contract Nos 41475101,41421005,and 41276028 ; the Natural Science Foundation of China-Shandong Joint Fund for Marine Science Research Centers under contract No.U1406401 ; the Strategic Priority Project of Chinese Academy of Sciences under contract Nos XDA11010301 and XDA11020306
文献类型	CNKI期刊论文
条目标识符	http://ir.qdio.ac.cn/handle/337002/190027
专题	中国科学院海洋研究所
作者单位	1.KeyLaboratoryofOceanCirculationandWave,InstituteofOceanology,ChineseAcademyofSciences 2.UniversityoftheChineseAcademyofSciences 3.StateKeyLaboratoryofSatelliteOceanEnvironmentDynamics,SecondInstituteofOceanography,StateOceanicAdministration 4.CollegeofPhysicalandEnvironmentalOceanography,OceanUniversityofChina
推荐引用方式 GB/T 7714	WEI Yanzhou,PEI Yuhua,ZHANG Rong-Hua. Seasonal variability of the Kuroshio Current at the PN Section in the East China Sea based on in-situ observation from 1987 to 2010. 2015.