Abstract
The vertical structure of current field in the northern South China Sea affected by the passage of Typhoon Pabuk is investigated using the observational data. The strong near-bottom current which has a duration of less than 1 day is observed twice whereas such a current is almost missing at some intermediate layers. It is suggested by the power spectral density that the typhoon strengthens the near-inertial current which is the most significant in the upper layer and the weakest in the middle layer after the passage of Pabuk. The wave-number rotary spectrum is calculated to study the characteristics of the energy which the typhoon injects into the ocean, and it is suggested that the strong near-bottom current may be supported by the transport of energy by the near-inertial waves induced by typhoon, thus the pressure gradients might be established through the continental slope and induce the strong near-bottom current.
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