Numerical simulation of seismic wavefields in TTI media using the rotated staggered-grid compact finite-difference scheme |
| |
| Authors: | Bing Bai Bingshou He Kairui Li Huaigu Tang Jiajia Yang |
| |
| Institution: | 1.College of Marine Geo-sciences, Ocean University of China, Qingdao 266100, China2.Evaluation and Detection Technology Laboratory of Marine Mineral Resources, Qingdao National Laboratory for Marine Science and Technology, Qingdao 266071, China3.Key Laboratory of Submarine Geoscience and Prospecting Techniques, Ministry of Education, Qingdao 266100, China4.Qingdao Institute of Marine Geology, China Geological Survey, Qingdao 266071, China |
| |
| Abstract: | 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. |
| |
| Keywords: | TTI media rotated staggered-grid compact staggered-grid finite-difference |
| 本文献已被 CNKI 等数据库收录！ |
| 点击此处可从《Earthquake Science》浏览原始摘要信息 |
| 点击此处可从《Earthquake Science》下载免费的PDF全文 |
|
