DOI: 10.1002/2016GL071439
论文题名: Decadal variation and trends in subsurface salinity from 1960 to 2012 in the northern South China Sea
作者: Zeng L. ; Wang D. ; Xiu P. ; Shu Y. ; Wang Q. ; Chen J.
刊名: Geophysical Research Letters
ISSN: 0094-8348
EISSN: 1944-8079
出版年: 2016
卷: 43, 期: 23 起始页码: 12181
结束页码: 12189
语种: 英语
英文关键词: decadal variation
; long-term trend
; northern South China Sea
; subsurface salinity
Scopus关键词: Advection
; Decadal change
; Decadal variations
; Horizontal advection
; Long-term trend
; Low frequency variability
; Northern South China Sea
; Subsurface salinity
; Subsurface waters
; Budget control
英文摘要: Observations suggest that subsurface waters in the northern South China Sea exhibited substantial low-frequency variability, with a striking decadal change in the southern limit of the 34.6 practical salinity unit (psu) isohaline. Long-term freshening of the subsurface waters, started in 1960, was followed by salinification from 1975, and freshening occurred again from 1993 to 2012. The linear trends were −0.0076, 0.0100, and −0.0078 psu/yr, respectively. An analysis of the subsurface salinity budget reveals that the main underlying contributors to subsurface salinity are horizontal advection and vertical entrainment. In particular, advection driven by the Luzon Strait transport and vertical entrainment from the mixed layer are the key factors controlling variations on subsurface salinity. Diagnosis of the salinity budget further suggests that entrainment from the mixed layer played a more important role in the freshening periods than in the salinifying period. ©2016. American Geophysical Union. All Rights Reserved. URL: https://www.scopus.com/inward/record.uri?eid=2-s2.0-85007412069&doi=10.1002%2f2016GL071439&partnerID=40&md5=9d973a06c5d10293248ac525eba55b47
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/9311
Appears in Collections: 科学计划与规划 气候变化与战略
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作者单位: State Key Laboratory of Tropical Oceanography, South China Sea Institute of Oceanology, Chinese Academy of Sciences, Guangzhou, China
Recommended Citation:
Zeng L.,Wang D.,Xiu P.,et al. Decadal variation and trends in subsurface salinity from 1960 to 2012 in the northern South China Sea[J]. Geophysical Research Letters,2016-01-01,43(23).