by Staff Writers
Fairbanks AK (SPX) Feb 04, 2016
University of Alaska Fairbanks mathematicians and glaciologists have taken a first step toward understanding how glacier ice flowing off Greenland affects sea levels.
Andy Aschwanden, Martin Truffer and Mark Fahnestock used mathematical computer models and field tests to reproduce the flow of 29 inlet glaciers fed by the Greenland ice sheet. They compared their data with data from NASA's Operation IceBridge North aerial campaign.
The comparisons showed that the computer models accurately depicted current flow conditions in topographically complex Greenland.
The work by the three researchers, all with UAF's Geophysical Institute, is featured in the latest edition of Nature Communications.
The time was right for the comparison, said Truffer, a physicist in the Geophysical Institute's Glaciers Group.
"Better computer models and NASA's high resolution data set made the difference," he said. "Each part needed each other to make sense. It couldn't have happened without either."
The work has taken over a decade, hindered by the ability to understand the thickness of Greenland ice. The NASA campaign provided that information, using an advanced ice-penetrating radar developed by the University of Kansas Center.
"The result has been a substantial improvement in our knowledge of subglacial topography, particularly in the deep channels feeding outlet glaciers," the three wrote in the Nature Communications article.
The three now want to see if the model can accurately predict how sea levels might be affected by a melting Greenland ice sheet.
University of Alaska Fairbanks
Beyond the Ice Age
|The content herein, unless otherwise known to be public domain, are Copyright 1995-2017 - Space Media Network. All websites are published in Australia and are solely subject to Australian law and governed by Fair Use principals for news reporting and research purposes. AFP, UPI and IANS news wire stories are copyright Agence France-Presse, United Press International and Indo-Asia News Service. ESA news reports are copyright European Space Agency. All NASA sourced material is public domain. Additional copyrights may apply in whole or part to other bona fide parties. Advertising does not imply endorsement, agreement or approval of any opinions, statements or information provided by Space Media Network on any Web page published or hosted by Space Media Network. Privacy Statement|