Isotropic angle-domain elastic reverse-time migration

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Vector-based elastic reverse time migration (2015, background): “Yan and Sava (2008) review various elastic image conditions, including imaging with vector displacement components and imaging with scalar and vector potentials from Helmholtz decomposition, and they conclude that the potential-based image condition gives clearer PP and PS images than directly…”
Elastic reflection-based waveform inversion with a nonlinear approach (2017, positive): “…RWI, the PP-image is the only parameter to approximate those reflectors, whereas for elastic models, elastic imaging workflows can output four crosscorrelation components (Yan and Sava, 2008; Duan and Sava, 2015; Yang et al., 2015) or 2C image perturbations (Duan et al., 2017), alternatively.”
Comparison of methods for extracting ADCIGs from RTM (2014, methodology): “The crosscorrelation image can be normalized by the square of the source strength (Kaelin and Guitton, 2006; Chattopadhyay and McMechan, 2008), but this source-normalization is not applied to any of the ADCIGs in this paper because most of the previous papers do not use the source-normalized crossco”
Source location using time‐reverse imaging (2010, methodology): “We introduce cross-correlation of the wavefield components P and S to image sources, which is similar to PS converted wave migration (Wapenaar et al. 1987; Yan and Sava 2008).”