The pp stacking effect between salicylates and hydrogen bonds of the neighboring one-dimensional molecules extend the structure into a two-dimensional network.

The stacking effect model and coupling resonance model were presented. The two-freedom model which gives high description precision of coupling system was proposed.

This paper deals with two problems, nonzero -offset Fresnel zone in homogeneous media, and the effect of velocity error resulted in NMO correction and stacking on vertical resolution.