David Felton Porter¹, Kirsty J Tinto², Robin Elizabeth Bell³, Scott R Springer⁴, Laurence Padman⁵, Helen Amanda Fricker⁶, Cyrille Mosbeux⁷ and Indrani Das³, (1)Columbia University of New York, Palisades, NY, United States, (2)Columbia University, Palisades, NY, United States, (3)Lamont -Doherty Earth Observatory, Palisades, NY, United States, (4)Earth & Space Research, Seattle, WA, United States, (5)Earth & Space Research, Corvallis, OR, United States, (6)Scripps Institution of Oceanography, La Jolla, CA, United States, (7)LGGE Laboratoire de Glaciologie et Géophysique de l’Environnement, Saint Martin d'Hères, France