Princeton University
Email:
abaig@princeton.edu
poster/oral: poster
| Recently, Fréchet kernels for teleseismic body wave amplitudes and traveltimes have been derived with the aid of the Born approximation. These developments allow for an expansion from the realm of ray-theoretical analysis by accounting for singly scattered wavefronts that constructively or destructively interfere with the ballistic wavefront. Thus, we expect predictions based on these Born-Fréchet kernels to better predict measured observables than purely ray-theoretical schemes when scattering is prevalent. To confirm our suspicions, we plot the predicted value of a quantity, be it the amplitude or traveltime perturbation, against the same quantity measured from `ground-truth' seismograms of acoustic waves in a variety of regimes of random media. With these scatter-plots, we are able to ascertain in which regimes we can reasonably forward model amplitudes and traveltimes with our Born-Fréchet kernels as well as determine in which regimes these kernels outperform the ray-theoretical formulation. |