Sensors | |
Free and Forced Rossby Waves in the Western South China Sea Inferred from Jason-1 Satellite Altimetry Data | |
Xiangyu Wu1  Qiang Xie1  Zhigang He1  | |
[1] Key Laboratory of Tropical Marine Environmental Dynamics, South China Sea Institute of Oceanology, Chinese Academy of Sciences, Guangzhou, P.R. China; | |
关键词: intra-seasonal signal; South China Sea; Rossby wave; sea surface height; | |
DOI : 10.3390/s8063633 | |
来源: mdpi | |
【 摘 要 】
Data from a subsurface mooring deployed in the western South China Sea shows clear intra-seasonal oscillations (ISO) at the period of 40∼70 days. Analysis of remotely-sensed sea surface height (SSH) anomalies in the same area indicates that these ISO signals propagate both eastward and westward. Time-longitude diagrams of ISO signals in SSH anomalies and wind-stress curl indicate that the eastward propagating SSH anomalies is forced by wind-stress curl. This is also confirmed by lag correlation between SSH anomalies and the wind-stress-curl index (wind stress curl averaged over 109.5°E -115°E and 12°N -13.5°N). Lag correlation of SSH anomaly suggests that the westward propagating signals are free Rossby waves.
【 授权许可】
CC BY
© 2008 by the authors; licensee Molecular Diversity Preservation International, Basel, Switzerland.
【 预 览 】
Files | Size | Format | View |
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RO202003190058906ZK.pdf | 115KB | download |