Abstract: Static correction is always a key issue for land seismic exploration, so whether the static correction is right or wrong can exert direct effect on the quality of seismic data processing. The problem of static correction gets especially prominent in the seismic exploration of the rough mountainous region in western China. So the surface consistency hypothesis and the horizontal layered model hypothesis are not correspondent with actual geological conditions. There will exist a major error by using the method of surface consistent static correction. In this paper, several non-surface consistent static correction methods are proposed, including the static correction method by using floating datum, the method of surface model static correction by wavefield continuation, the method of smooth static correction. As a result, the signal to noise ratio is increased and better results are obtained

Key words: non-surface consistency, floating datum, static correction