Browsing Bergen Open Research Archive by Author "de Fleurian, Basile"

Now showing items 1-9 of 9

    • Exceptionally high heat flux needed to sustain the Northeast Greenland Ice Stream 

      Smith-Johnsen, Silje; de Fleurian, Basile; Schlegel, Nicole; Seroussi, Hélène; Nisancioglu, Kerim Hestnes (Journal article; Peer reviewed, 2020)
      The Northeast Greenland Ice Stream (NEGIS) currently drains more than 10 % of the Greenland Ice Sheet area and has recently undergone significant dynamic changes. It is therefore critical to accurately represent this feature ...

    • Ice Thickness and Bed Elevation of the Northern and Southern Patagonian Icefields 

      Millan, Romain; Rignot, Eric; Rivera, A; Martineau, Vincent; Mouginot, Jérémie; Zamora, Rodrigo; Uribe, Jose; Lenzano, G; de Fleurian, Basile; Li, Xin; Gim, Yonggyu; Kirchner, Donald L. (Peer reviewed; Journal article, 2019)
      The Northern and Southern Patagonian Icefields are the largest ice masses in the Southern Hemisphere outside Antarctica, but their ice volume and bed topography are poorly known. Here, we combine airborne gravity data ...

    • Impact of seasonal fluctuations of ice velocity on decadal trends observed in Southwest Greenland 

      Halas, Paul Lucas; Mouginot, Jérémie; de Fleurian, Basile; Langebroek, Petra (Journal article; Peer reviewed, 2023)
      By tracking the feature displacement between satellite images spaced approximately one year apart, surface runoff has been shown to have a long-term impact on the average ice flow of a land-terminating sector of Greenland. ...

    • Present day Jakobshavn Isbræ close to the Holocene minimum extent 

      Kajanto, Karita Anneli; Seroussi, Hélène; de Fleurian, Basile; Nisancioglu, Kerim Hestnes (Journal article; Peer reviewed, 2020)
      Marine terminating glaciers evolve on millenial timescales in response to changes in oceanic and atmospheric conditions. However, the relative role of oceanic and atmospheric drivers remains uncertain. The evolution of ...

    • The role of subglacial hydrology in ice streams with elevated geothermal heat flux 

      Smith-Johnsen, Silje; de Fleurian, Basile; Nisancioglu, Kerim Hestnes (Peer reviewed; Journal article, 2020-02-10)
      The spatial distribution of geothermal heat flux (GHF) under ice sheets is largely unknown. Nonetheless, it is an important boundary condition in ice-sheet models, and suggested to control part of the complex surface ...

    • Sensitivity of the Northeast Greenland Ice Stream to Geothermal Heat 

      Smith-Johnsen, Silje; Schlegel, Nicole; de Fleurian, Basile; Nisancioglu, Kerim Hestnes (Peer reviewed; Journal article, 2019-12-20)
      Recent observations of ice flow surface velocities have helped improve our understanding of basal processes on Greenland and Antarctica, though these processes still constitute some of the largest uncertainties driving ice ...

    • SHMIP The subglacial hydrology model intercomparison Project 

      de Fleurian, Basile; Werder, Mauro A.; Beyer, Sebastian; Brinkerhoff, Douglas J.; Delaney, Ian; Dow, Christine F.; Downs, Jacob; Gagliardini, Olivier; Hoffman, Matthew J.; Hooke, R. LeB.; Seguinot, J.; Sommers, Aleah (Peer reviewed; Journal article, 2018-10-24)
      Subglacial hydrology plays a key role in many glaciological processes, including ice dynamics via the modulation of basal sliding. Owing to the lack of an overarching theory, however, a variety of model approximations exist ...

    • Simulated retreat of Jakobshavn Isbræ since the Little Ice Age controlled by geometry 

      Steiger, Nadine; Nisancioglu, Kerim Hestnes; Åkesson, Henning; de Fleurian, Basile; Nick, Faezeh M. (Peer reviewed; Journal article, 2018-07-12)
      Rapid retreat of Greenland's marine-terminating glaciers coincides with regional warming trends, which have broadly been used to explain these rapid changes. However, outlet glaciers within similar climate regimes ...

    • Simulated retreat of Jakobshavn Isbræ since the Little Ice Age controlled by geometry 

      Steiger, Nadine; Nisancioglu, Kerim Hestnes; Åkesson, Henning; de Fleurian, Basile; Nick, Faezeh M. (Peer reviewed; Journal article, 2018-07-12)
      Rapid retreat of Greenland's marine-terminating glaciers coincides with regional warming trends, which have broadly been used to explain these rapid changes. However, outlet glaciers within similar climate regimes experience ...