Irregular surface seismic forward modeling by a body-fitted rotated–staggered-grid finite-difference method
Sign Up to like & getrecommendations! Published in 2018 at "Applied Geophysics"
DOI: 10.1007/s11770-018-0697-2
Abstract: Finite-difference (FD) methods are widely used in seismic forward modeling owing to their computational efficiency but are not readily applicable to irregular topographies. Thus, several FD methods based on the transformation to curvilinear coordinates using… read more here.
Keywords: staggered grid; forward modeling; method; finite difference ... See more keywords
Unification of Lagrangian staggered-grid hydrodynamics and cell-centered hydrodynamics in two dimensions
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DOI: 10.1063/5.0260576
Abstract: We propose a computational framework to unify Lagrangian staggered-grid hydrodynamic (SGH) and cell-centered hydrodynamic (CCH) methods. This unified framework applies Newton's first, second, and third laws to discretize the corresponding set of gasdynamic equations on… read more here.
Keywords: hydrodynamics; lagrangian staggered; staggered grid; cell centered ... See more keywords
A Nonbalanced Staggered-Grid FDTD Scheme for the First-Order Elastic-Wave Extrapolation and Reverse-Time Migration
Sign Up to like & getrecommendations! Published in 2022 at "IEEE Journal of Selected Topics in Applied Earth Observations and Remote Sensing"
DOI: 10.1109/jstars.2022.3181000
Abstract: In this study, an efficient and accurate staggered-grid finite-difference time-domain method to solve the two-dimensional (2-D) first-order stress–velocity elastic-wave equation is proposed. In the conventional implementation of the staggered-grid finite-difference (SGFD) method, the same SGFD… read more here.
Keywords: time; staggered grid; sgfd; scheme ... See more keywords
Elastic Wave Modeling With High-Order Temporal and Spatial Accuracies by a Selectively Modified and Linearly Optimized Staggered-Grid Finite-Difference Scheme
Sign Up to like & getrecommendations! Published in 2022 at "IEEE Transactions on Geoscience and Remote Sensing"
DOI: 10.1109/tgrs.2021.3078626
Abstract: High-order staggered-grid finite-difference (SFD) schemes are preferred in elastic wave simulation for geophysical problems because they decrease the accumulation of error from grid dispersion. However, most SFD approaches reach high-order spatial but limited temporal accuracy.… read more here.
Keywords: staggered grid; sfd; order; high order ... See more keywords
An average-derivative based second-order staggered-grid finite-difference scheme for 3D frequency-domain elastic wave modeling
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DOI: 10.1190/geo2024-0574.1
Abstract: In this paper we develop an average-derivative based second-order staggered-grid finite-difference (ADSSFD) scheme for performing 3D frequency-domain elastic wave modeling. The ADSSFD scheme applies the idea of average derivative to discretize the first-order derivative of… read more here.
Keywords: scheme; staggered grid; order staggered; adssfd scheme ... See more keywords
Analysis of Seismic Wavefield Characteristics in 3D Tunnel Models Based on the 3D Staggered-Grid Finite-Difference Scheme in the Cylindrical Coordinate System
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DOI: 10.3390/app11135854
Abstract: The accurate prediction of the geological conditions ahead of a tunnel plays an important role in tunnel construction. Among all forward geological prospecting methods, the seismic detection method is widely applied. However, due to the… read more here.
Keywords: seismic wavefield; coordinate system; characteristics tunnel; staggered grid ... See more keywords
Stripe patterns in wind forecasts induced by physics-dynamics coupling on a staggered grid in CMA-GFS 3.0
Sign Up to like & getrecommendations! Published in 2025 at "Geoscientific Model Development"
DOI: 10.5194/gmd-18-8253-2025
Abstract: Abstract. An unphysical stripe pattern is identified in low-level wind field in China Meteorological Administration Global Forecast System (CMA-GFS), characterized by meridional stripes in u-component and zonal stripes in v-component. This stripe noise is primarily… read more here.
Keywords: stripe; staggered grid; dynamics coupling; cma gfs ... See more keywords