摘要
本大应用爆炸力学和理论力学对爆炸震源（球状和往状）及集中力震源（落重、可控、敲击）进行了研究。给出了地震衍射CT中所涉及的震源函数形式和相应的入射场解析解与数值结果，并采用弹塑性理论、冲量定理及Laplace变换导出了位移Green函数，进而作褶积运算，最后得到位移入射场表达式及其图表显示。
The spherical and cylindrical dynamite sources as well as the concentrated force sources including weight drop,vibrator and shocking force are researched by using explosion mechanics and theoretical mechanics. The researches give source functions, relevant analytic and numerical results of the incident field in seismic diffraction tomography. By using elastoplastic theory,impulse theorem and Laplace transform,displacement Green's function is derived,and the convolution of Green's function with source function is made then. In addition,the expression of displace ment incident field and the corresponding graphic representations are offered final-ly.
出处
《石油地球物理勘探》
EI
CSCD
北大核心
1994年第4期434-440,共7页
Oil Geophysical Prospecting
关键词
震源
入射场
地震波
函数
CT
seismic source, incident field, scattering field, explosion mechanics, tomography,seismic wave,Green's function
