The instability of diffusive convection and its implication for the thermohaline staircases in the deep Arctic Ocean

CORC > 南海海洋研究所 > 中国科学院南海海洋研究所 > 热带海洋环境国家重点实验室(LTO)

	The instability of diffusive convection and its implication for the thermohaline staircases in the deep Arctic Ocean
	Zhou, SQ ; Qu, L ; Lu, YZ ; Song, XL
刊名	OCEAN SCIENCE
	2014
卷号	10 期号:1 页码:127-134
ISSN号	1812-0784
通讯作者	sqzhou@scsio.ac.cn
中文摘要	In the present study, the classical description of diffusive convection is updated to interpret the instability of diffusive interfaces and the dynamical evolution of the bottom layer in the deep Arctic Ocean. In the new consideration of convective instability, both the background salinity stratification and rotation are involved. The critical Rayleigh number of diffusive convection is found to vary from 10(3) to 10(11) in the deep Arctic Ocean as well as in other oceans and lakes. In such a wide range of conditions, the interface-induced thermal Rayleigh number is shown to be consistent with the critical Rayleigh number of diffusive convection. In most regions, background salinity stratification is found to be the main hindrance to the occurrence of convecting layers. With the new parameterization, it is predicted that the maximum thickness of the bottom layer is 1051 m in the deep Arctic Ocean, which is close to the observed value of 929 m. The evolution time of the bottom layer is predicted to be similar to 100 yr, which is on the same order as that based on C-14 isolation age estimation.
学科主题	Meteorology & Atmospheric Sciences ; Oceanography
收录类别	SCI
资助信息	China NSF [41176027, 11072253]; Strategic Priority Research Program of the Chinese Academy of Sciences [XDA11030302]; LTO [LTOZZ1304]
原文出处	COPERNICUS GESELLSCHAFT MBH
WOS记录号	WOS:000332316200009
公开日期	2014-12-11
内容类型	期刊论文
源URL	[http://ir.scsio.ac.cn/handle/344004/10587]
专题	南海海洋研究所_热带海洋环境国家重点实验室(LTO)
推荐引用方式 GB/T 7714	Zhou, SQ,Qu, L,Lu, YZ,et al. The instability of diffusive convection and its implication for the thermohaline staircases in the deep Arctic Ocean[J]. OCEAN SCIENCE,2014,10(1):127-134.
APA	Zhou, SQ,Qu, L,Lu, YZ,&Song, XL.(2014).The instability of diffusive convection and its implication for the thermohaline staircases in the deep Arctic Ocean.OCEAN SCIENCE,10(1),127-134.
MLA	Zhou, SQ,et al."The instability of diffusive convection and its implication for the thermohaline staircases in the deep Arctic Ocean".OCEAN SCIENCE 10.1(2014):127-134.