** Next:** References
** Up:** Zhang & Claerbout: Traveltime
** Previous:** Traveltime picking of the

This paper presents an algorithm for picking the traveltimes of seismic
events. We model seismic events as delayed wavelets and define the picking
position as the first break of the minimum phase part of a wavelet.
This definition accords with usual practice. For minimum
phase wavelets, the first breaks are picked. For zero phase wavelets, the
central peaks are picked. Two implementations of the algorithm are given.
For isolated, noise-free events, the algorithm works well. But examples with
field data reveal that the algorithm fails to pick the correct traveltimes
when spiky noises are present.

** Next:** References
** Up:** Zhang & Claerbout: Traveltime
** Previous:** Traveltime picking of the
Stanford Exploration Project

12/18/1997