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On steric and mass-induced contributions to the annual sea-level variations in the South China Sea
Cheng, XH; Qi, YQ; xuhuacheng@scsio.ac.cn
2010
Source PublicationGLOBAL AND PLANETARY CHANGE
ISSN0921-8181
Volume72Issue:3Pages:227-233
AbstractThe steric sea level (SLA(steric)), water-mass change (SLA(mass)) and their contributions to the sea level anomaly (SLA) in the South China Sea (SCS) are studied by using altimetry data, Ishii data and GRACE data. Annual harmonic results and correlation analysis indicate that the SLA(steric) has a significant contribution to the SLA over deep basin and that its phase leads SLA 1-3 months in different parts of the SCS, whereas the SLA(mass) explains the SLA to a great extent over shallow water areas. The area-averaged SLA in the western SCS has an amplitude of similar to 7.6 cm and a phase of similar to 360 degrees, which is similar to 3.8 cm higher and peaks similar to 108 degrees later than SLA(steric). The SLA(mass) has an amplitude of similar to 6.3 cm and a phase of similar to 337 degrees. The simultaneous correlation coefficient between SLA and SLA(mass) is 0.78, which indicates that mass variation dominates the sea-level variation in the western SCS. Unlike the western SCS, the area-averaged SLA in the central SCS peaks at 254 degrees with a smaller amplitude of similar to 3.3 cm, which is similar to 1.8 cm lower and peaks similar to 15 days later than corresponding SLA(steric). The simultaneous correlation coefficient between SLA and SLA(steric) is 0.81; therefore, the contribution of steric variation to the sea-level variation is dominant in the central SCS. (C) 2010 Elsevier B.V. All rights reserved.
Department[Cheng, Xuhua] Chinese Acad Sci, Key Lab Trop Marine Environm Dynam, S China Sea Inst Oceanol, LED, Guangzhou 510301, Guangdong, Peoples R China
KeywordSouth China Sea Merged Altimetry Data Grace Sea Level Thermosteric Sea Level Water Mass
Subject AreaGeography, Physical ; Geosciences, Multidisciplinary
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Indexed Bysci
Funding ProjectLED
WOS IDWOS:000280040300013
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Cited Times:12[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.scsio.ac.cn/handle/344004/6267
Collection热带海洋环境国家重点实验室(LTO)
Corresponding Authorxuhuacheng@scsio.ac.cn
Recommended Citation
GB/T 7714
Cheng, XH,Qi, YQ,xuhuacheng@scsio.ac.cn. On steric and mass-induced contributions to the annual sea-level variations in the South China Sea[J]. GLOBAL AND PLANETARY CHANGE,2010,72(3):227-233.
APA Cheng, XH,Qi, YQ,&xuhuacheng@scsio.ac.cn.(2010).On steric and mass-induced contributions to the annual sea-level variations in the South China Sea.GLOBAL AND PLANETARY CHANGE,72(3),227-233.
MLA Cheng, XH,et al."On steric and mass-induced contributions to the annual sea-level variations in the South China Sea".GLOBAL AND PLANETARY CHANGE 72.3(2010):227-233.
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