Spectrum Analysis of Deep Water Ambient Noise in the West Pacific

This work put forward an analysis of the spectrum characteristics of deep water ambient noise in the West Pacific, in terms of depth dependence and the relationship to temperature, based on the experimental data obtained in the autumn of 2020. The results illustrate that the ambient noise is higher in the morning than the afternoon and evening; the minimum noise level is about 10dB and 40dB lower than the mean and maximum noise level; the mean standard deviation of noise level higher than 1kHz is about 6.3dB during the measurement.