The Effects of Internal Waves on the Signal Temporal Correlation Length in the South China Sea

The temporal correlation of sound transmission is simulated using a two-dimensional advective frozen-ocean model using the temperature data of a temperature sensor array deployed on the propagation path in the South China Sea (SCS) experiment 2009. The relationships of temporal correlation length, source-receiver range, and sound speed standard deviation (STD) caused by internal waves (including both linear internal waves and solitons) are numerically investigated. It is found that the temporal correlation length is -1.2 power dependent on source-receiver range and -0.9 power dependent on sound speed STD.