TY - JOUR T1 - Accelerated thermokarst formation in the McMurdo Dry Valleys, Antarctica JF - Scientific Reports Y1 - 2013 A1 - Joseph S. Levy A1 - Andrew G Fountain A1 - Dickson, James L. A1 - Head, James W. A1 - Okal, Marianne A1 - Marchant, David R. A1 - Watters, Jaclyn VL - 3 UR - http://www.nature.com/srep/2013/130724/srep02269/full/srep02269.html?WT.ec_id=SREP-20130730 ER -