Abstract：Seismic wavefront self-interaction or multi-valued seismic ray is a natural phenomenon whenthe seismic wave propagates through a media con-taming low-velocity abnormal bodies or bending in-terfaces，which is commonly ignored in previousstudy.However，it is true that the later arrivalsmay contain some useful information regarding tothe low velocity zone or the irregular reflection in-terface and have a potential to improve the ray cov-erage .Based on the phase space method，we im-prove in this paper the wavefront constructionmethod in two aspects:firstly，using a continuouswavefront mapping method to deal with the reflec-tion interface;secondly，using a precise receiver-location algorithm in the ray tracing process.Sev-eral simple model simulations indicate that the im-proved wavefront construction method in phasespace is an effective and accurate approach to tracemulti-valued seismic rays.
王庆林, 白超英. 相空间波前构造法地震多值射线追踪的改进[J]. 石油地球物理勘探, 2013, 48(1): 15-21.
Wang Qinglin, Bai Chaoying. Multi-valued ray tracing based on a modified wave-front construction method in phase space. OGP, 2013, 48(1): 15-21.
