Author Affiliations

Jorge C. Castellanos,^1,2,3,4 Zhongwen Zhan,^2,* Valey Kamalov,¹ Mattia Cantono,¹ Shuang Yin,¹ Antonio Mecozzi,³ Shirshendu Bhattacharya,¹ and Richard M Allen⁴

¹Google LLC, Mountain View, CA, USA.

²Division of Geological and Planetary Sciences, California Institute of Technology, Pasadena, CA, USA.

³Department of Physical and Chemical Sciences, University of L’Aquila, Coppito, Italy.

⁴Seismological Laboratory, University of California, Berkeley, CA 94720, USA.

^*Corresponding author: zwzhan@caltech.edu