Details

Autor(en) / Beteiligte

• Bing Bai
• Bingshou He
• Kairui Li
• Huaigu Tang
• Jiajia Yang

Titel

Numerical simulation of seismic wavefields in TTI media using the rotated staggered-grid compact finite-difference scheme

Ist Teil von

• 地震学报（英文版）, 2018, Vol.31 (2), p.75-82

Ort / Verlag

College of Marine Geo-sciences, Ocean University of China, Qingdao 266100, China

Erscheinungsjahr

2018

Quelle

Alma/SFX Local Collection

Beschreibungen/Notizen

• Numerical simulation in transverse isotropic media with tilted symmetry axis (TTI) using the standard staggered-grid finite-difference scheme (SSG)results in errors caused by averaging or interpolation.In order to eliminate the errors,a method of rotated staggered-grid finite-difference scheme (RSG) is proposed.However,the RSG brings serious numerical dispersion.The compact staggered-grid finite-difference scheme (CSG) is an implicit difference scheme,which use fewer grid points to suppress dispersion more effectively than the SSG.This paper combines the CSG with the RSG to derive a rotated staggered-grid compact finite-difference scheme (RSGC).The numerical experiments indicate that the RSGC has weaker numerical dispersion and better accuracy than the RSG.