Surface‐consistent amplitude corrections for single or multicomponent sources and receivers using reciprocity and waveform inversion

摘要: SUMMARY In land seismics, near-surface conditions often vary within surveys, resulting in differences source strength and signature. Furthermore, discrepancies between closely spaced recordings are also commonly observed. Processing interpretation of recorded data require that corrected for these receiver perturbations the early stages processing. However, existing surface-consistent deconvolution techniques applicable to primary reflection only, therefore ground roll multiples suppressed prior application. This is usually performed with multichannel filter operations. The performance operations, however, rapidly deteriorates presence acquisition-related amplitude phase perturbations. We propose an alternative approach compensate perturbations, which has advantage being purely a pre-processing step. It following characteristics: (i) it can be applied complete recordings, hence does not isolation reflections data, (ii) no assumptions imposed on subsurface (iii) multicomponent data. procedure based reciprocity medium response, so normal reciprocal traces attributed application requires symmetric acquisition, is, identical patterns, locations, orientations have components. Besides reciprocity, additional constraints required determine lateral variations fully. use criteria minimizing total energy adjacent common gathers, offset panels response. Synthetic tests demonstrate significantly reduced using this method.