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当前地震勘探急待解决的问题，是提高分辨率。常规认为地震记录是地震子波和反射系数的褶积，并将地震子波看成是大地滤波器的脉冲响应。现在看来，其效果只限于地质构造的研究。根据地震波的物理成因和传播过程，建立了地震波的运动方程，并求得其正演解。从而得出结论：１）地震波是时变的，任一层的反射波受其上所有各层的综合影响；２）反射波频率取决地层的固有频率，在几Ｈｚ～８０Ｈｚ之间；３）下行波随深度的增加，高频成份增加，上行波随深度变浅，低频成份增强，高频成份变弱，其中包含以检波器自然频率存在的振动；４）地震波频率产生和地层厚度无关。
The current urgent problem of seismic exploration is to improve the resolution. Seismograms are conventionally considered as the convolution of the seismic wavelet and the reflection coefficient, and the seismic wavelet is considered as the impulse response of the earth filter. It now appears that its effectiveness is limited to the study of geological formations. According to the physical origin and propagation process of seismic wave, the motion equation of seismic wave is established and its forward solution is obtained. The conclusions are as follows: 1) The seismic wave is time-varying, and the reflected wave of any layer is affected by the combined effect of all the layers above it. 2) The reflected wave frequency depends on the natural frequency of the formation, The descending wave increases with the increase of depth, the high frequency component increases, the ascending wave becomes shallower with the depth, the low frequency component strengthens and the high frequency component becomes weaker, including the vibration existing at the natural frequency of the geophone; 4) The generation of seismic wave frequency has nothing to do with the formation thickness.