Peter A Selkin¹, Fenna Bergmann², Petra Dekens³, Valier Galy⁴, Risa A Hess¹, Hendrik Lantzsch², Laure Meynadier⁵, Brendan Reilly⁶, Jairo F Savian⁷, Michael E Weber⁸, Christian France-Lanord⁹ and Volkard Spiess¹⁰, (1)University of Washington Tacoma Campus, Tacoma, WA, United States, (2)University of Bremen, Bremen, Germany, (3)San Francisco State University, San Francisco, CA, United States, (4)WHOI-MCG, Woods Hole, MA, United States, (5)Institut de Physique du Globe, Paris, France, (6)Oregon State University, College of Earth, Ocean, and Atmospheric Sciences, Corvallis, OR, United States, (7)IAG-USP, Sao Paulo, Brazil, (8)Univ Cologne, Cologne, Germany, (9)CNRS CRPG, Vandoeuvre Les Nancy, France, (10)Texas A & M University College Station, College Station, TX, United States