Future Work

There are several avenues for future research. One obvious step is to solve for a 3-D velocity model. This would require significantly more events and stations than are available in this experiment. Second, the subtraction of the best fit plane wave from the arrival times is less than optimal. In areas of complex velocity this could introduce significant travel-time errors that would be difficult to correct.

The most interesting future research direction is to use the steering filters to test different geologic hypotheses. The difference in the reduction in the travel time errors and the location of large values in the regularization portion of the residual vector would both be good indicators of model suitability.