Abstract：We advance here a new finite-difference calculation of traveltimes that is better than Vidale's (1988).First-break ray paths between sources to receivers can be derived from known first break times at knots of 2-D grid.Then,curved-ray seismic tomography in any velocity distributions in 2-D medium can be achieved by taking simultaneously iterative reconstruction technique.Theoretical modeling shows that the method is an effective one for tomographic inversion.
谢海兵, 马在田, 王燕琨. 一种新程函方程差分法层析成像[J]. 石油地球物理勘探, 1997, 32(5): 623-627.
Xie Haibing, Ma Zaitian, Wang Yankun. Seismic tomography based on new finite difference scheme of eikonal equation. OGP, 1997, 32(5): 623-627.
