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Three-stage vertical distribution of seawater conductivity
Zheng ZY(郑泽宇)1,2,5; Fu Y(傅洋)1,2; Liu KZ(刘开周)1,3; Xiao R(肖睿)4; Wang XH(王晓辉)1,3; Shi HB(史海波)1,2
Indexed BySCI
WOS IDWOS:000436953900025
Contribution Rank1
Funding OrganizationNational Natural Science Foundation of China [71671182] ; National Key R&D Program of China [2018YFF0214704] ; Program for One-hundred Talent Program of the Chinese Academy of Sciences [Y5AA100A01]

Seawater conductivity is an important indicator of ocean electromagnetic properties and directly impacts the electromagnetic attenuation characteristics and phase distribution features of the ocean. Few studies have considered how the combined effects of salinity, temperature and pressure affect the vertical conductivity distribution and its formation mechanisms. Here, we analyse the vertical distributions of seawater conductivity from the sea surface to a maximum depth of 7062 m at five different locations. Electric conductivity profiles show similar vertical structures at all locations. Electric conductivity decreases with increasing depth first and then slowly increases from approximately 2000 m to the seabed. We observe an exponential relationship between the conductivity minimum and the water depth. At all five measurement locations, seawater conductivity measurements show a stable three-stage vertical distribution on logarithmic scales, with the middle stage satisfying a power law relationship. We analyse the vertical distribution of temperature in the second stage and investigate the relationship between temperature and conductivity. The results show that temperature also exhibits a power-law relationship with depth and a high linear correlation exists between temperature and conductivity. Our findings suggest that the vertical structure of conductivity is largely temperature dependent.

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Document Type期刊论文
Corresponding AuthorZheng ZY(郑泽宇)
Affiliation1.Shenyang Institute of Automation, Chinese Academy of Sciences, Shenyang, 110016, PR China
2.Key Laboratory of Network Control System, Chinese Academy of Sciences, Shenyang, 110016, PR China
3.State Key Laboratory of Robotics, Chinese Academy of Sciences, Shenyang, 110016, PR China
4.Department of Biostatistics and Epidemiology, University of Pennsylvania Perelman School of Medicine, Philadelphia, PA, 19104, USA
5.University of Chinese Academy of Sciences, Beijing, 100049, China
Recommended Citation
GB/T 7714
Zheng ZY,Fu Y,Liu KZ,et al. Three-stage vertical distribution of seawater conductivity[J]. SCIENTIFIC REPORTS,2018,8:1-10.
APA Zheng ZY,Fu Y,Liu KZ,Xiao R,Wang XH,&Shi HB.(2018).Three-stage vertical distribution of seawater conductivity.SCIENTIFIC REPORTS,8,1-10.
MLA Zheng ZY,et al."Three-stage vertical distribution of seawater conductivity".SCIENTIFIC REPORTS 8(2018):1-10.
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