海底多波地震勘探利用海底电缆(OBC)采集海底各岩层的弹性波的多波多分量信息。在利用振幅随偏移距变化(AVO)进行弹性参数反演中,这些分量对反演所作的贡献是不同的,体现在各反射波的反射系数与弹性参数的信息量及其组合关系的关联程度是不同的。利用波场正演技术分析研究海底多波地震资料中蕴含弹性参数的信息,有助于充分利用海底多波地震资料提高AVO反演弹性参数的可靠性。本文在前人工作的基础上,应用计算反射系数的Aki近似公式,进行海底多波多分量合成数据蕴含弹性参数的定量分析,确定哪些弹性参数或它们的组合关系能最佳地从AVO资料中反演得到。文中考虑的弹性参数是速度及密度的相对扰动量,在时间域内对反射系数的正演计算公式进行线性化,获取反演的灵敏度矩阵,并利用SVD计算反演灵敏度矩阵的特征值及特征向量,继而分析弹性参数反演的信息量。由计算结果可知海底压力波场和质点速度分量资料蕴含的弹性参数的信息要比常规海上地震资料多,且能较好地反演出纵横波速度及密度的相对扰动量 Seabed Multi-Wave Seismic Exploration Submarine cable (OBC) is used to acquire the multi-wave and multi-component information of the elastic waves of each submarine formation. The contributions of these components to the inversion are different in the inversion of the elastic parameters by using the amplitude versus offset variation (AVO), which is reflected in the correlation between the reflection and the elastic parameters of the individual reflected waves and their combination The degree is different. It is helpful to make full use of the seabed multi-wave seismic data to improve the reliability of the elastic parameters of AVO inversion by analyzing the information of the elastic parameters in the multi-wave seabed seismic data by using the forward modeling techniques. Based on the previous work, this paper uses the Aki approximation formula to calculate the reflection coefficient to quantitatively analyze the elastic parameters contained in the multi-component and multi-component seafloor synthetic data, and determine which elastic parameters or their combination relations can optimally extract from the AVO data Play to The elastic parameters considered in this paper are the relative disturbances of velocity and density. The forward calculation formula of reflection coefficient is linearized in the time domain to obtain the sensitivity matrix of inversion. The eigenvalues ​​and eigenvectors of the inversion sensitivity matrix are calculated by using SVD. , And then analyze the elastic parameters of the inversion of the amount of information. The results show that the information of the elastic parameters contained in the submarine pressure wave and mass velocity components data is more than the conventional marine seismic data and the relative disturbance of the P- and S-wave velocity and density can be well retrieved