Julia Neme, Australian National University, Research School of Earth Sciences, Canberra, Australia; Australian Centre for Excellence in Antarctic Science, Canberra, Australia, Dr. Channing Prend, Columbia University of New York, Palisades, United States, Adele K Morrison, Australian National University and Australian Centre for Excellence in Antarctic Science, Canberra, ACT, Australia and Andrew F Thompson, CALTECH California Institute of Technology, Pasadena, United States