On steric and mass-induced contributions to the annual sea-level variations in the South China Sea
On steric and mass-induced contributions to the annual sea-level variations in the South China Sea
复制标题
空间和质量引起的南海年海平面变化的贡献
DOI：
10.1016/j.gloplacha.2010.05.002
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发表时间：
2010-06
影响因子：
3.9
通讯作者：
中科院分区：
文献类型：
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作者：
利用测高资料、石井资料和GRACE资料研究了南中国海的空间海平面(SLAsteric)、水团变化(SLAMASS)及其对海平面异常的贡献。年调和结果和相关分析表明，SLA对深盆SLA有显著贡献，其位相在南海不同区域提前1-3个月，而SLA对浅水区SLA有很大的解释作用。南海西部的SLA幅值为∼7.6 cm，位相为∼360°，比Slasteric高∼3.8 cm，峰值∼晚108°。SLAMAS的振幅为∼6.3 cm，相位为∼337°。SLA与SLAmassis的同时相关系数为0.78，表明质量变化是南海西部海平面变化的主导因素。与西部南海不同的是，南海中部的面平均SLA峰值在2 54°处，波幅较小，∼为3.3 cm，比相应的SLA低∼1.8 cm，峰值∼比相应的SLA晚15天。SLA和SLAsteric值的同时相关系数为0.81，因此，位阻变化对南海中部海平面变化的贡献占主导地位。
The steric sea level (SLAsteric), water-mass change (SLAmass) 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 SLAsterichas a significant contribution to the SLA over deep basin and that its phase leads SLA 1–3months in different parts of the SCS, whereas the SLAmassexplains the SLA to a great extent over shallow water areas. The area-averaged SLA in the western SCS has an amplitude of ∼7.6cm and a phase of ∼360°, which is ∼3.8cm higher and peaks ∼108° later than SLAsteric. The SLAmasshas an amplitude of ∼6.3cm and a phase of ∼337°. The simultaneous correlation coefficient between SLA and SLAmassis 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° with a smaller amplitude of ∼3.3cm, which is ∼1.8cm lower and peaks ∼15days later than corresponding SLAsteric. The simultaneous correlation coefficient between SLA and SLAstericis 0.81; therefore, the contribution of steric variation to the sea-level variation is dominant in the central SCS.
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影响因子：
5.2
作者：
Chambers, Don P.
通讯作者：
Chambers, Don P.
影响因子：
2.2
作者：
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通讯作者：
S. Sokolov;S. Rintoul
影响因子：
3.6
作者：
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通讯作者：
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影响因子：
10.3
作者：
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通讯作者：
R. Nerem;J. Wahr;E. Leuliette
影响因子：
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作者：
Li Li-Li;Xu Jindian;Cai Rongshuo
通讯作者：
Li Li-Li;Xu Jindian;Cai Rongshuo