Abstract: There are different interference source during the acquisition of offshore seismic data. Some is generated naturally, while the other is formed due to the outside disturbance, such as the disturbance from wind wave and current, disturbance from obstacles on the seafloor, disturbance from fishing, mechanical disturbance, and the disturbance from equipment used during the process. While analyzing the interference source during the process, this paper elaborates and categorizes the features and manifestation of interference wave on single shot or original stack profile, spreading out almost all the features of noise during offshore seismic data acquisition. In view of the features and manifestation of interference wave on single shot or original stack profile, this paper further illustrates the methods for identifying the interference wave during field acquisition or data processing in the lab, and summarizes the harm of interference and noise to seismic data.

Key words: offshore seismic data acquisition, interference source, interference wave, noise identificatio