1. 1Hydrologic Science & Engineering Program, Department of Geophysics, Colorado School of Mines, Golden, Colorado 80401, USA
2. 2Department of Geology and Geological Engineering, Colorado School of Mines, Golden, Colorado 80401, USA
3. 3Department of Geological Sciences and Environmental Studies, Binghamton University, Binghamton, New York 13902, USA
4. 4Department of Earth Sciences, Montana State University, Bozeman, Montana 59717, USA
5. 5Scripps Institution of Oceanography, University of California, San Diego, La Jolla, California 92093, USA
6. 6Bigelow Laboratory for Ocean Sciences, East Boothbay, Maine 04544, USA
7. 7Australian Antarctic Division, Kingston, TAS 7050, Australia
8. 8Australian Antarctic Program Partnership, Institute for Marine & Antarctic Studies, University of Tasmania, Hobart, TAS 7001, Australia
9. 9Australian Centre for Excellence in Antarctic Science, University of Tasmania, Hobart, TAS 7001, Australia
10. 10Division of Hydrologic Sciences, Desert Research Institute, Reno, Nevada 89512, USA
11. 11Lamont Doherty Earth Observatory, Columbia University, Palisades, New York 10964, USA
12. 12Geological Survey of Denmark and Greenland (GEUS), 1350 Copenhagen, Denmark
13. 13Business Integra, New York, New York 10001, USA
14. 14NASA Goddard Institute for Space Studies, New York, New York 10025, USA
15. 15Department of Geophysics, Stanford University, Stanford, California 94305, USA
16. 16Department of Electrical Engineering, Stanford University, Stanford, California 94305, USA
17. 17Department of Geological Sciences and Engineering, University of Nevada, Reno, Nevada 89557, USA
18. 18Physical Sciences Department, San Diego City College, San Diego, California 92101, USA
19. 19Department of Earth and Atmospheric Sciences, University of Nebraska, Lincoln, Nebraska 68588, USA
20. 20Department of Geology, Colgate University, Hamilton, New York 13346, USA
21. 21College of Marine Science, University of South Florida, St. Petersburg, Florida 33701, USA
22. 22Polar Oceans Research Group, Sheridan, Montana 59749, USA