Effect of wind on seismic exploration random noise on land: Modeling and analyzing

Random noise is a key factor which impacts the Signal Noise Ratio (SNR) of seismic records, and its interference without regularity makes seismic data process difficult. It is a first requirement for noise attenuation to know how random noise generated. Since the main effect of wind on seismic noise, we model wind-induced noise by wind induced vibration theory, aeroacoustics and wave equation, and analyze the influencing factors which cause the differences of noise in the desert in Tarim basin, the loess tableland in northern Shaanxi, the mountain land in Yunnan and the forest belt in north in China in this paper. There are wind speed, surface roughness, terrain, and vegetation. The greater the wind speed, the rougher the surface, the higher and the steeper the mountain, the more the vegetations and the thinner the branches and leaves of vegetations, the greater the amplitude and the frequency of wind-induced noise is. The simulated results explain the differences of wind induced noise in different areas. It lays a foundation for random noise attenuation both in data acquisition and data processing.