There have been a lot of research results on the characteristics of ambient noise distribution with depth. but the correlation between the two is rarely reported. In order to reveal the cross-correlation between noise spectrum level and reception depth. three-day ambient noise measurements were conducted in the northern South China Sea using two underwater acoustic gliders. https://www.roneverhart.com/DPA-d-fine-Slim-Capsule-Headset-Mic-Single-Ear-40mm-Boom-Interchangeable-Black-p7600/