Blar i forfatter "Pettersson, R."

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    • The Subglacial Lake That Wasn't There: Improved Interpretation From Seismic Data Reveals a Sediment Bedform at Isunnguata Sermia 

      Hofstede, C; Wilhelms, F.; Neckel, N.; Fritzsche, D.; Beyer, S.; Hubbard, Alun Lloyd; Pettersson, R.; Eisen, O. (Journal article; Tidsskriftartikkel; Peer reviewed, 2023-08-26)
      Radio Echo Sounding (RES) surveys conducted in May 2010 and April 2011 revealed a 2 km2 flat area with increased bed reflectivity at the base of Isunnguata Sermia at the western margin of the Greenland Ice Sheet. This flat reflector was located within a localized subglacial hydraulic potential (hydropotential) minimum, as part of a complex and elongated trough system. By analogy with comparable ...

    • Subglacial water drainage, storage, and piracy beneath the Greenland ice sheet 

      Lindbäck, K.; Pettersson, R.; Hubbard, Alun Lloyd; Doyle, Samuel H.; Van As, D.; Mikkelsen, A.B.; Fitzpatrick, A.A. (Journal article; Tidsskriftartikkel; Peer reviewed, 2015-08-26)
      Meltwater drainage across the surface of the Greenland ice sheet (GrIS) is well constrained by measurements and modeling, yet despite its critical role, knowledge of its transit through the subglacial environment remains limited. Here we present a subglacial hydrological analysis of a land-terminating sector of the GrIS at unprecedented resolution that predicts the routing of surface-derived meltwater ...