一、引言 側波,在地震勘探中常称为折射波,在一般的文献中又常称为首波。“折射波”这名称易和普通的折射波相混,“首波”从其含义說又沒能包括和其本属同一范畴的表面側波。但是在理論研究中,把首波和表面侧波放在一起討論比較方便,故这里就采用“侧波”这名 I. INTRODUCTION Side waves, often referred to as seismic waves in seismic exploration, are often referred to as the first wave in general literature. The term “refracted wave” is easily confused with ordinary refracted waves, which, in its meaning, fail to include the surface side waves of the same category as their own. However, in the theoretical study, the first wave and the surface side waves put together to discuss more convenient, so here we use the “side wave” this name