Acknowledgments

We thank Joakim Blanch, Aaron Stanton, and one anonymous reviewer for their suggestions that helped to improve the paper. We thank Mrinal Sen and Lexing Ying for constructive discussions. We thank the sponsors of the Texas Consortium for Computation Seismology (TCCS) for financial support. The first author is supported additionally by the Statoil Fellows Program at UT Austin, and the third author is supported by the Jackson School Distinguished Postdoctoral Fellowship at UT Austin. We thank Texas Advanced Computing Center (TACC) for providing computational resources used in this study.