关键词: 浅海, 伪速度, 稀疏约束, 鬼波压制

Abstract:

Based on marine single-component seismic data acquired by conventional acquisition method, the vertical component of velocity (pseudo-V_z) at the same position is estimated. The pseudo-V_z is then combined with the single component of pressure data to get the aim of deghosting. By applying the sparsity constraint deconvolution method as an intermediate procedure, improvements of shallow sea single-component seismic data in resolution as well as in filling the frequency notches, which are caused by the interference of the up- and downgoing waves at the receivers are achieved. In addition, the energy of low-frequency signal is enhanced. The proposed method can be used for re-processing the existing single-component data through which can broaden the frequency bandwidth.

Key words: shallow sea, pseudo velocity, sparsity constraint, deghosting