Asa K Rennermalm¹, Regine Hock², Giovanni Corti³, Federico Covi⁴, Clément Miège¹, Sasha Z Leidman¹, Marco Tedesco⁵, Jonathan Kingslake⁶ and Xavier Fettweis⁷, (1)Rutgers University, New Brunswick, NJ, United States, (2)Univ of AK-Geophysical Inst, Fairbanks, AK, United States, (3)Reed College, Portland, OR, United States, (4)Geophysical Institute Fairbanks, Fairbanks, AK, United States, (5)Columbia University, Palisades, NY, United States, (6)Lamont-Doherty Earth Observatory, Columbia University, Palisades, NY, United States, (7)University of Liège, Liège, Belgium