Basic concepts of seismic zonation in
Russia are the degree of intensity and soil categories that correspond to
discrete structure in the ratio “seismic impact-ground reaction”. Meanwhile,
the parameters of seismic effects, and the parameters of soil properties are
continuous in the space. The report expounds the basic theory, adequately
representing the above mentioned continuality. Thus, many the concepts of
seismic zonation, used now, become either more correct, or unnecessary.