【摘要】 虚反射的去除对于海洋高分辨率地震勘探剖面质量的提高具有重要意义.本文针对海洋小道距高分辨率斜缆地震资料中虚反射速度低的特点,应用抛物线Radon变换进行去除.实际处理效果表明,经抛物线Radon变换处理后的叠加剖面,其虚反射去除效果明显,剖面信噪比得以提升.进一步的分析表明高分辨率地震的虚反射能够与有效波分离的主要因素是斜缆采集,小道距对处理也产生积极影响,炮间和道间的插值可以在一定程度上改善处理的效果.更多还原

【Abstract】 It is important to attenuate the ghost for the high resolution seismic exploration profile. In this paper,because the velocity of the ghost acquired by variable-depth streamer is slower,the parabolic Radon transform can be used to attenuate the noise.The result shows that the stack profile with parabolic Radon transform is better than that without parabolic Radon transform which S/N ratio improves. Further research indicates that the variable-depth streamer is the key factor to attenuate the ghost using the parabolic Radon transform. The final result can also benefit from the small group interval and shot-trace interpolation.更多还原