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《Oil Geophysical Prospecting》 2003-05
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Numerical modeling of P-wave and S-wave separation in elastic wavefield.

Ma Detang and Zhu Guangming.  
Commonused the full elastic wave equation to carry o ut the numerical modeling of elastic wavefield only obtained a hybrid wavefield of P-wave and S-wave.When you want to obtain P-wave and S-wave wavefield,ge nerally the wavefield separation is carried out after hybrid wavefield being obt ained or using acoustic equation to model the P-wave and S-wave wavefield,but these methods are very difficult to ensure the amplitude of P-wave and S-wave do not disorder.The paper gave an equivalent equation of full elastic wave equat ion,which contains variations of both the hybrid wavefield and the pure P-wave and S-wave wevefield. Using pseudo-spectrum method to solve the wave equation, obtained totally separated wavefield of pure P-wave and S-wave while obtaining hybrid wavefield,and preserved the information of mutual transformation of P-w ave and S-wave energy.The analysis of modeling wavefield showed using numerical modeling of elastic wave separation has important meaning in respect of knowing the propagating rule of elastic wave.
【CateGory Index】: P631.44
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