Upper ocean near-inertial response to 1998 Typhoon Faith in the South China Sea |
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| Authors: | SUN Lu ZHENG Quan''an TANG Tswen-Yung CHUANG Wen-Ssn LI Li HU Jianyu WANG Dongxiao |
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| Affiliation: | State Key Laboratory of Tropical Oceanography, South China Sea Institute of Oceanography, Chinese Academy of Sciences, Guangzhou 510301, China;South China Sea Environment Monitoring Center, South China Sea Branch, State Oceanic Administration, Guangzhou 510300, China;Department of Atmospheric and Oceanic Science, University of Maryland, College Park, Maryland 20742, USA;Institute of Oceanography, National Taiwan University, Taipei 100, China;Institute of Oceanography, National Taiwan University, Taipei 100, China;Third Institute of Oceanography, State Oceanic Administration, Xiamen 361005, China;State Key Laboratory of Marine Environmental Science, Xiamen University, Xiamen 361005, China;State Key Laboratory of Tropical Oceanography, South China Sea Institute of Oceanography, Chinese Academy of Sciences, Guangzhou 510301, China |
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| Abstract: | During the South China Sea monsoon experiment (SCSMEX), three autonomous temperature line acquisition system (ATLAS) buoys with acoustic Doppler current profiler (ADCP) were moored in the South China Sea to measure temperature, salinity and current velocity. Typhoon Faith passed through about 250 km south to one of the mooring buoys located at 12°58.50N, 114°24.50E from December 11 to 14, 1998. The data analysis indicates that the typhoon winds induce a great increase in the kinetic energy at near-inertial frequencies with two maxima in the mixed layer and thermocline. The near-inertial oscillations were observed at the upper 270 m in the wake of Typhoon Faith. The oscillations were originally excited in the sea surface layer and propagated downward. The amplitudes of the oscillations decrease with depth except in the thermocline. The near-inertial oscillation signals are also remarkable in temperature and salinity fields. |
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| Keywords: | near-inertial oscillation Typhoon Faith mooring buoy South China Sea |
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