Characteristics study of internal wave in the Yellow Sea

This paper presents characteristics study of internal wave in the Yellow Sea by analyzing nearly 40 h thermistor data obtained in 2007 experiment. Vertical displacements of isopycnel surfaces are derived from thermistor chain data, and its power spectrum is analyzed to qualitatively interpret the high-frequency characteristics of internal wave. The internal wave spectra of low modes are estimated with the method of mode decomposition, which shows a steeper slope in [13, 46] cph band than that of Modified GM model. A regional spectrum model based on the Modified GM model is proposed in this paper, which demonstrates can better fit the experiment data. Moreover, energy density of internal waves is also estimated in this paper.