Publicaties | Kaarten

nieuwe zoekopdracht

[ meld een fout in dit record ]mandje (0): toevoegen | toon Print deze pagina
Discovery of a hypersaline subglacial lake complex beneath Devon Ice Cap, Canadian Arctic
Rutishauser, A.; Blankenship, D.D.; Sharp, M.J.; Skidmore, M.L.; Greenbaum, J.S.; Grima, C.; Schroeder, D.M.; Dowdeswell, J.A.; Young, D.A. (2018). Discovery of a hypersaline subglacial lake complex beneath Devon Ice Cap, Canadian Arctic. Science Advances 4(4): eaar4353. https://dx.doi.org/10.1126/sciadv.aar4353
In: Science Advances. AAAS: New York. ISSN 2375-2548; e-ISSN 2375-2548
Peer reviewed article  
Beschikbaar in  Auteurs 
Auteurs  Top 
  • Rutishauser, A.
  • Blankenship, D.D.
  • Sharp, M.J.
  • Skidmore, M.L.
  • Greenbaum, J.S.
  • Grima, C.
  • Schroeder, D.M.
  • Dowdeswell, J.A.
  • Young, D.A.
Abstract
    Subglacial lakes are unique environments that, despite the extreme dark and cold conditions, have been shown to host microbial life. Many subglacial lakes have been discovered beneath the ice sheets of Antarctica and Greenland, but no spatially isolated water body has been documented as hypersaline. We use radio-echo sounding measurements to identify two subglacial lakes situated in bedrock troughs near the ice divide of Devon Ice Cap, Canadian Arctic. Modeled basal ice temperatures in the lake area are no higher than −10.5°C, suggesting that these lakes consist of hypersaline water. This implication of hypersalinity is in agreement with the surrounding geology, which indicates that the subglacial lakes are situated within an evaporite-rich sediment unit containing a bedded salt sequence, which likely act as the solute source for the brine. Our results reveal the first evidence for subglacial lakes in the Canadian Arctic and the first hypersaline subglacial lakes reported to date. We conclude that these previously unknown hypersaline subglacial lakes may represent significant and largely isolated microbial habitats, and are compelling analogs for potential ice-covered brine lakes and lenses on planetary bodies across the solar system.
Alle informatie in het Integrated Marine Information System (IMIS) valt onder het VLIZ Privacy beleid Top | Auteurs 
IMIS is ontwikkeld en wordt gehost door het VLIZ.