Topographic scattering effects on seismic data: from seismic numerical modeling to field data
Yu Duan and Li-Yun Fu
ASEG Extended Abstracts
2001(1) 1 - 4
Using synthetic seismograms, we study the influence of the widely observed strong scattered noises in complex near-surface areas. Our studies show that an intense scattering occurs in near surface regions, especially in the near-source and near-receiver regions. The scattering is dominated by rugged topography. These strong near-surface scatterings can seriously decrease the energy of valid signals and significantly increase noise levels that mask the interesting reflections. The study of simulating wave scattering by a low-velocity topographic structure in the western areas of China shows that the topographic effect is the most important factor to degrade the quality of seismic data in these areas.
Full text doi:10.1071/ASEG2001ab034
© ASEG 2001