Hangyu Meng, Australian National University, Canberra, AUSTRALIA, Wilma C. G. Huneke, Australian National University, Canberra, ACT, Australia, Wilton Aguiar, Australian National University, Research School of Earth Sicences, Canberra, Australia, Andrew M Hogg, Australian National University and ARC Centre of Excellence for Climate Extremes, ACCESS-NRI, Canberra, ACT, Australia and Adele K Morrison, Australian National University and Australian Centre for Excellence in Antarctic Science, Canberra, ACT, Australia