Elastic reverse time migration (E-RTM) has limitations when the migration velocities contain strong contrasts. First, the vector-based imaging condition needs to use the reflector-image normal, and also cannot
Update default image tag for meta migration (milvus-io#21709) January 13, 2023 16:51 docs Add based on timetravel GC for snapshot KV (milvus-io#21417) January 4, 2023 21:37 githooks [skip ci]Update OWNERS files (milvus-io#11898) November 16, 2021 15:41 internal Fix ...
Reverse time migrationImagingP- and S-wave filed can be obtained based on decoupled, elastic wave equation, which can automatically preserve the amplitude and phase information. This method becomes the important method for the separation of elastic wave filed. Although the scalar imaging condition ...
Elastic reverse time migration (E-RTM) has limitations when the migration velocities contain strong contrasts. First, the traditional scheme of P/S-wave mode separation is based on Helmholtz's equations, which ignore the conversion between P-and S-waves at the current separation time. Thus, it...
Vector-basedAngle-dependentImaging conditionIn recent years, many studies have focused on elastic reverse time migration (RTM). In response to the issues involved in elastic RTM, we propose a new procedure for 2D elastic multicomponent RTM. The decomposed P- and S-wave components are obtained ...
Prestack elastic reverse time migration ( RTM ) requires m ulticom ponent seismic data. But for multicomponent elastic Kirchh off migration , there is alimitation that ray theory no longer applies if thegeology becomes com plicated . In this paper, the authors have created a new 2D m ig...
To suppress these crosstalk artefacts and spurious diffractions, we have developed a topographic separated-wavefield elastic least-squares reverse time migration algorithm. In this method, we apply P- and S-wave separated elastic velocity-stress wave equations in the curvilinear coordinates to derive ...
Therefore, with the goal of addressing the limitations of the current acoustic reverse‐time migration (RTM) processes, as well as deepening the understanding of the interactions between different wave modes in traditional elastic reverse‐time migration, a vector Pand S﹚ave reverse‐time migration ...
This yields a highly efficient wave-mode separation scheme for vector elastic reverse time migration (ERTM), especially in anisotropic cases. We separate qP- and qSV-waves by first obtaining the polarization vector based on the proposed Poynting vector using an analytical formula and then performing...
Vector-based excitation amplitude imaging condition for elastic reverse time migrationIn recent years, many studies have focused on elastic reverse time migration (RTM). In response to the issues involved in elastic RTM, we propose a new procedure for 2D elastic multicomponent RTM. The decomposed P...