Aleksei Titov^1,2, Nate Lindsey^1,3 and Jonathan Blair Ajo-Franklin^1,4, (1)Lawrence Berkeley National Laboratory, Berkeley, CA, United States, (2)Colorado School of Mines, Geophysics Department, Golden, CO, United States, (3)University of California, Berkeley, Earth and Planetary Science, Berkeley, CA, United States, (4)Rice University, Earth, Environmental and Planetary Sciences Department, Houston, TX, United States