The velocity and interface depth determination is one of the most important tasks of exploration seismology. However the process of velocity-depth determination suffers from non-uniqueness of the solution. Traditional methods for imposing uniqueness suffer from loss of resolution and damping of the solution. This work presents an improvement to travel time tomography by using a wavelet expansion of the model parameters combined with Cauchy regularization. By this method we achieve a stable high resolution tomography which produces geologically plausible solutions. The method is tested on synthetic and field data.
|State||Published - 2002|
|Event||2002 Society of Exploration Geophysicists Annual Meeting, SEG 2002 - Salt Lake City, United States|
Duration: 6 Oct 2002 → 11 Oct 2002
|Conference||2002 Society of Exploration Geophysicists Annual Meeting, SEG 2002|
|City||Salt Lake City|
|Period||6/10/02 → 11/10/02|