A improved seismic reflection tomographic method
一种改进的地震反射层析成像方法

Data picking is difficult for seismic reflection traveltime tomography in complex media.In this study a new seismic reflection tomographic method is proposed for estimating velocity model from seismic data in complex media,in which the model is described by velocity field and a set of ray traveltimes.It consists of fitting seismic ray traveltimes and positions to data calculated by ray tracing.In order to improve inversion stability and efficiency,seismic ray is described by Hamilton function and ray tracing is done in phase space.Validation tests on synthetic and practical data are analyzed.The tests show that this tomographic method is effective for estimating velocity field in complex media.