Interval Velocity Estimation from Beam-Stacked Data
, by Biondo Biondi

Beam stacks, like local slant stacks from which they are derived,
select data based on the direction of wave propagation.
The goal is to estimate the low-wavenumber components of the
velocity function from beam-stacked data using a tomographic
approach. The velocity estimation does not require picking the data but it
is solved by searching for the maximum of an objective function that measures how well the velocity model predicts the beam-stacked data.
The inversion was successful in estimating the velocity
function in a horizontally layered medium both from
synthetic data and from field data.
The results of this simple inversion indicate
directions for future research into method's application
to two-dimensional velocity estimation.