A statistical analysis of mesoscale eddies in the Bay of Bengal from 22-year altimetry data

doi:10.1007/s13131-016-0945-3

CORC > 自然资源部第一海洋研究所 > 自然资源部第一海洋研究所 > 业务部门 > 海洋物理与遥感研究室

	A statistical analysis of mesoscale eddies in the Bay of Bengal from 22-year altimetry data
	Cui Wei; Yang Jungang; Ma Yi
刊名	ACTA OCEANOLOGICA SINICA
	2016-11
卷号	35 期号:11 页码:16-27
关键词	mesoscale eddy altimetry data Bay of Bengal eddy characteristics seasonal variability interannual variability
ISSN号	0253-505X
DOI	10.1007/s13131-016-0945-3
英文摘要	Eddy properties in the Bay of Bengal are studied from 22 a archiving, validation and interpretation of satellite oceanographic (AVISO) data using a sea level anomaly (SLA)-based eddy identification. A geographical distribution and an eddy polarity, an eddy lifetime and propagation distances, eddy origins and terminations, eddy propagation directions and trajectories, eddy kinetic properties, the evolution of eddy properties, seasonal and interannual variabilities of eddy activities are analyzed in this area. Eddies exist principally in the western Bay of Bengal and most of them propagate westward. The polarity distribution of eddies shows cyclones prefer to occur in the northwest and south of the Bay of Bengal, while anticyclones mainly occur in the east of the bay. Five hundred and sixty-five cyclones and 389 anticyclones with the lifetime that exceeds 30 d are detected during the 22 a period, and there is a preference for the cyclones for all lifetime and propagation distances. The kinetic properties of all observed eddies show the average amplitude of the cyclones is larger than that of the anticyclones, whereas that is opposite for average radius, and their average velocities are basically the same. Moreover, the evolution of eddies properties reveals that the eddies with a long lifetime that exceeds 90 d have a significant double-stage feature of the former 50 d growth period and the dying period after 50 d. For the seasonal variability of the eddies, the cyclones occur more often in spring while the anticyclones occur more often in summer. The analysis of long-lived eddy seasonal distributions shows that there is the obvious seasonal variation of the eddy activities in the Bay of Bengal. The interannual variability of an eddy number shows an obvious negative correlation with the EKE variation.
资助项目	National High Technology Research and Development Program (863 program) of China[2013AA122803]
WOS研究方向	Oceanography
语种	英语
出版者	SPRINGER
WOS记录号	WOS:000387805300003
内容类型	期刊论文
源URL	[http://ir.fio.com.cn/handle/2SI8HI0U/3320]
专题	业务部门_海洋物理与遥感研究室
作者单位	State Ocean Adm, Inst Oceanog 1, Qingdao 266061, Peoples R China
推荐引用方式 GB/T 7714	Cui Wei,Yang Jungang,Ma Yi. A statistical analysis of mesoscale eddies in the Bay of Bengal from 22-year altimetry data[J]. ACTA OCEANOLOGICA SINICA,2016,35(11):16-27.
APA	Cui Wei,Yang Jungang,&Ma Yi.(2016).A statistical analysis of mesoscale eddies in the Bay of Bengal from 22-year altimetry data.ACTA OCEANOLOGICA SINICA,35(11),16-27.
MLA	Cui Wei,et al."A statistical analysis of mesoscale eddies in the Bay of Bengal from 22-year altimetry data".ACTA OCEANOLOGICA SINICA 35.11(2016):16-27.