物探化探计算技术2012，Vol.34Issue(5)：533-540,8.DOI:10.3969/j.issn.1001-1749.2012.05.06
双相TI介质中弹性波交错网格高阶有限差分法数值模拟
ELASTIC WAVE NUMERICAL SIMULATION IN TWO-PHASE TRANSVERSELY ISOTROPIC MEDIUM BY HIGH-ORDER STAGGERED-GRID FINITE DIFFERENCE METHOD
摘要
Abstract
Finite differential format of wave equation in two-phase transverse isotropic media (TI) is obtained by solving two-phase media wave equation, and the numerical simulation of elastic wave finite difference is carried out in two-phase TI media. The results show that in the two-phase elastic wave propagation in TI media, in addition to existing conventional fast P wave (qP1 ) and S wave, there is slow P wave(qP2), slow P wave was significantly less than the speed of fast P wave, and the dissipation coefficient attenuate very quickly, so in practice it is difficult to observe slow P wave. The phase of the fast P wave is same in both solid phase and liquid phase, and that of the slow P wave is reverse, the amplitude of the slow P wave in liquid phase is bigger than that in solid phase.关键词
双相横向各向同性介质/交错网格/有限差分法/弹性波Key words
two-phase transversely isotropic media/ staggered-grid/ finite difference method/elastic wave分类
天文与地球科学引用本文复制引用
尹学爱,邱光辉..双相TI介质中弹性波交错网格高阶有限差分法数值模拟[J].物探化探计算技术,2012,34(5):533-540,8.基金项目
滨州学院科研基金(BZXYL1107) （BZXYL1107）
