Elastic Reverse Time Migration for Weakly Illuminated Structure

One of the most effective techniques to obtain PP and PS images is elastic reverse time migration which employs multi-component seismic data. The two types complementary play an important role in reducing blind spots exploration. However, image deep structures always blurred due shielding effect overburden rock on waves. To overcome this issue, we develop approach for insufficient illumination. This contains crucial elements. first that derive wave equation extract wavefields associated with exploration target using staining algorithm. Secondly, inner product imaging condition a filter mute migrated artifacts. filter, consisting vectors, determines part wavefield contributed imaging. Synthetic examples exhibit proposed method can improve signal-to-noise ratio weakly illuminated structures.