The purpose of this work is to present and analyze the results of numerical simulations related to the application of three different mathematical models in the acoustic seismic wave propagation in which only compressional waves (P-waves) are contemplated. And present the results of an investigation about how these wave equation implementations can influence the amplitudes of a migrated section...

GPU has become a booming technology in reverse time migration (RTM) to perform the intensive computation. Compared with saving forward modeled wavefield on the disk, RTM via wavefield reconstruction using saved boundaries on device is a more efficient method because computation is much faster than CPUGPU data transfer. In this paper, we introduce the effective boundary saving strategy in backwa...

We develop a representation of reverse time migration in terms of Fourier integral operators the canonical relations of which are graphs. Through the dyadic parabolic decomposition of phase space, we obtain the solution of the wave equation with a boundary source and homogeneous initial conditions using wave packets. On this basis, we develop a numerical procedure for the reverse time continuat...

In this paper we study the linearized inverse problem associated with imaging of reflection seismic data. We introduce an inverse scattering transform derived from reverse time migration (RTM). In the process, the explicit evaluation of the so-called normal operator is avoided, while other differential and pseudodifferential operator factors are introduced. We prove that, under certain conditio...

Bubble clusters present in seawater can cause acoustic interference and signal distortion during marine exploration. However, this also be used as an masking technique, which has significant implications for military purposes. Therefore, characterizing the distribution of bubble water would allow development anti-detection technologies. In study, a sea experiment was performed using multi-sonar...

Comparative studies of methods of reverse time migration (RTM) show that spectral methods for calculating the Laplacian impose the least stringent demands on discretization stepsize; thus with spectral methods, the grid reenements often required by other methods can be avoided. Implemented with absorbing boundary conditions , which are energy-tuned to give good absorption at the boundaries, the...

Seismic reflection can provide precise estimates of subsurface structures. To obtain more information on subsurfaces using the same amount data, we first compared reverse time migration (RTM) images obtained from surface seismic profile (SSP), vertical (VSP), and single well (SWP) data for models that included faults with various dips. When were sufficient, SSP, SWP, VSP surveys suitable identi...

Abstract Least-squares reverse-time migration (RTM) works with an inverse operation, rather than adjoint operation in a conventional RTM, and thus produces image higher resolution more balanced amplitude the RTM image. However, least-squares introduces two side effects: sidelobes around reflectors high-wavenumber artifacts. These effects are caused mainly by limited bandwidth of seismic data, c...

Abstract. To discover or delineate mineral deposits and other geological features such as faults lithological boundaries in their host rocks, seismic methods are preferred for imaging the targets at great depth. One major goal is to produce a reliable image of reflectors underground given typical discontinuous geology crystalline environments with low signal-to-noise ratios. In this study, we i...