| 摘要 |
A new method for refraction tomography is provided that uses differential delay times. Different types of refracted waves including head waves and diving waves are inverted. First, traveltime/offset functions for station in the seismic survey are estimated from first-arrival picks. Next, the traveltime/offset functions are transformed into velocity/depth functions to make up a near-surface model. Then, long-period statics are calculated using the derived near-surface model. Finally, short-period statics are estimated by a surface-consistent decomposition of the traveltime residuals. |
