In this paper,we introduce atomographic approachthat
overcomes these geometrical difficulties and
provides stable statics solutions frompicked first-break
times. We also show that the first-break picks contain
both the short and the long wavelength surface statics.
The solutions are obtained by solving a set of generalized
surface-consistent delay-time equations using the
method of weighted least squares and conjugate gradient.
While iterating, each first-break pick is evaluated
to ensure its consistency with the least-squares solution.
Basedonconsistency,we weight the traveltime picks and
use themin the next iteration. These weights also serve
as an indicator of anomalous picks to the user.