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  • Measuring Height Change Around the Periphery of the Greenland Ice Sheet With Radar Altimetry 

    Gray, Laurence; Burgess, David; Copland, Luke; Langley, Kirsty; Gogineni, Prasad; Paden, John; Leuschen, Carl; van As, Dirk; Fausto, Robert; Joughin, Ian; Smith, Ben (Frontiers Media, 2019-06-11)
    Ice loss measurements around the periphery of the Greenland Ice Sheet can provide key information on the response to climate change. Here we use the excellent spatial and temporal coverage provided by the European Space ...
  • CReSIS airborne radars and platforms for ice and snow sounding 

    Arnold, Emily J.; Leuschen, Carl; Rodriguez-Morales, Fernando; Li, Jilu; Paden, John; Hale, Richard; Keshmiri, Shawn (International Glaciological Society, 2019-11-19)
    This paper provides an update and overview of the Center for Remote Sensing of Ice Sheets (CReSIS) radars and platforms, including representative results from these systems. CReSIS radar systems operate over a frequency ...
  • Hard rock landforms generate 130 km ice shelf channels through water focusing in basal corrugations 

    Jeofry, Hafeez; Ross, Neil; Le Brocq, Anne; Graham, Alastair G.C.; Li, Jilu; Gogineni, Prasad; Morlighem, Mathieu; Jordan, Thomas; Siegert, Martin J. (Nature Research, 2018-11-01)
    Satellite imagery reveals flowstripes on Foundation Ice Stream parallel to ice flow, and meandering features on the ice-shelf that cross-cut ice flow and are thought to be formed by water exiting a well-organised subglacial ...
  • A large impact crater beneath Hiawatha Glacier in northwest Greenland 

    Kjær, Kurt H.; Larsen, Nicolaj K.; Binder, Tobias; Bjørk, Anders A.; Eisen, Olaf; Fahnestock, Mark A.; Funder, Svend; Garde, Adam A.; Haack, Henning; Helm, Veit; Houmark-Nielsen, Michael; Kjeldsen, Kristian K.; Khan, Shfaqat A.; Machguth, Horst; McDonald, Iain; Morlighem, Mathieu; Mouginot, Jérémie; Paden, John D.; Waight, Tod E.; Weikusat, Christian; Willerslev, Eske; MacGregor, Joseph A. (American Association for the Advancement of Science, 2018-11-14)
    We report the discovery of a large impact crater beneath Hiawatha Glacier in northwest Greenland. From airborne radar surveys, we identify a 31-kilometer-wide, circular bedrock depression beneath up to a kilometer of ice. ...
  • AI Radar Sensor: Creating Radar Depth Sounder Images Based on Generative Adversarial Network 

    Rahnemoonfar, Maryam; Johnson, Jimmy; Paden, John (2019-12-12)
    Significant resources have been spent in collecting and storing large and heterogeneous radar datasets during expensive Arctic and Antarctic fieldwork. The vast majority of data available is unlabeled, and the labeling ...
  • Intercomparison of snow depth retrievals over Arctic sea ice from radar data acquired by Operation IceBridge 

    Kwok, Ron; Kurtz, Nathan T.; Brucker, Ludovic; Ivanoff, Alvaro; Newman, Thomas; Farrel, Sinead L.; King, Joshua; Howell, Stephen; Webster, Melinda A.; Paden, John; Leuschen, Carl J.; MacGregor, Joseph A.; Richter-Menge, Jacqueline; Harbeck, Jeremy; Tschudi, Mark (European Geosciences Union, 2017-11)
    Since 2009, the ultra-wideband snow radar on Operation IceBridge (OIB; a NASA airborne mission to survey the polar ice covers) has acquired data in annual campaigns conducted during the Arctic and Antarctic springs. ...
  • Radar sounder evidence of thick, porous sediments in Meridiani Planum and implications for ice‐filled deposits on Mars 

    Watters, Thomas R.; Leuschen, Carl J.; Campbell, Bruce A.; Morgan, Gareth A.; Cicchetti, Andrea; Grant, John A.; Philips, Roger J.; Plaut, Jeffrey J. (American Geophysical Union, 2017-09-19)
    Meridiani Planum is one of the most intensely studied regions on Mars, yet little is known about the physical properties of the deposits below those examined by the Opportunity rover. We report the detection of subsurface ...
  • Antarctic firn compaction rates from repeat-track airborne radar data: I. Methods 

    Medley, B.; Ligtenberg, S. R. M.; Joughin, Ian R.; van den Broeke, Michiel R.; Gogineni, Sivaprasad; Nowicki, S. (International Glaciological Society, 2015-10)
    While measurements of ice-sheet surface elevation change are increasingly used to assess mass change, the processes that control the elevation fluctuations not related to ice-flow dynamics (e.g. firn compaction and ...