Receiver grouping strategies for hybrid geometric-mean reverse time migration

Receiver grouping strategies for hybrid geometric-mean reverse time migration Bai, Tong; Lyu, Bin; Williamson, Paul; Nakata, Nori Geometric-mean reverse time migration (GmRTM), a powerful crosscorrelation-based imaging method, generates higher resolution source images and is more robust to noise compared with conventional time-reversal imaging. The price to pay is the higher computational costs. Alternatively, we can adopt hybrid strategies by dividing the receivers into different groups. Conven