Preconditioning least-squares RTM in viscoacoustic media by Q-compensated RTM

Keyphrases

• Viscoacoustic 100%
• Least-squares Reverse Time Migration (LSRTM) 100%
• Q-compensated 100%
• Reverse Time Migration 100%
• Least Squares 80%
• Reverse-time 80%
• Iterative Methods 20%
• Conjugate Gradient Method 20%
• Convergence Rate 20%
• Wave Equation 20%
• Numerical Test 20%
• Hessian 20%
• Amplitude Attenuation 20%
• Fewer Iterations 20%
• Ill-conditioned Problem 20%
• Attenuating Media 20%
• Viscoelastic Medium 20%
• Slow Convergence 20%
• Forward Wave 20%
• Non-Hermitian 20%
• Backward Propagation 20%
• Generalized Minimal Residual (GMRES) 20%

Mathematics

• Least Square 100%
• Convergence Rate 33%
• Iterative Method 16%
• Approximates 16%
• Matrix (Mathematics) 16%
• Wave Equation 16%
• Residuals 16%
• Good Approximation 16%
• Adjoints 16%
• Conjugate Gradient Method 16%

Earth and Planetary Sciences

• Reaction Time 100%
• Resin Transfer Molding 36%
• Reflectance 9%
• Diffraction 9%
• Adjoints 9%
• Wave Equation 9%