Acknowledgments

We thank Associate Editor Joakim Blanch, Yu Zhang and one anonymous reviewer for their constructive comments. We thank the sponsors of the Texas Consortium for Computation Seismology (TCCS) for financial support. The first author was additionally supported by the Statoil Fellows Program at the University of Texas at Austin. The second author was supported by the Jackson School Distinguished Postdoctoral Fellowship at the University of Texas at Austin. We thank TACC (Texas Advanced Computing Center) for providing computational resources used in this study.