Browsing by Author "Chandler, David Matthew"

Now showing items 1-3 of 3

    • Antarctic ice sheet modelling – the needs, challenges, and opportunities for Norwegian Antarctic research 

      Langebroek, Petra Margaretha; Goelzer, Heiko; Petrini, Michele; Chandler, David Matthew (Conference object; Konferansebidrag, 2024-05)
      Antarctic Ice Sheet mass loss accounts for the largest uncertainties in global sea level projections. Antarctic meltwater and iceberg calving, together with changes in sea ice, also impact global ocean circulation, carbon uptake, and ecosystems. To understand, quantify and predict these changes and impacts, we employ climate and ice sheet models. Over the past 5+ years the Norwegian polar research ...

    • Rapid development and persistence of efficient subglacial drainage under 900 m-thick ice in Greenland 

      Chandler, David Matthew; Wadham, Jemma Louise; Nienow, Peter W.; Doyle, Samuel H.; Tedstone, Andrew J.; Telling, Jon; Hawkings, Jonathan R.; Alcock, Jonathan; Linhoff, Benjamin; Hubbard, Alun Lloyd (Journal article; Tidsskriftartikkel; Peer reviewed, 2021-05-11)
      Intensive study of the Greenland Ice Sheet's (GrIS) subglacial drainage has been motivated by its importance for ice dynamics and for nutrient/sediment export to coastal ecosystems. This has revealed consistent seasonal development of efficient subglacial drainage in the lower ablation area. While some hydrological models show qualitative agreement with field data, conflicting evidence (both field- ...

    • Widespread partial-depth hydrofractures in ice sheets driven by supraglacial streams 

      Chandler, David Matthew; Hubbard, Alun (Journal article; Tidsskriftartikkel; Peer reviewed, 2023-06-19)
      Dramatic supraglacial lake drainage events in Greenland and Antarctica are enabled by rapid hydrofracture propagation through ice over 1 km thick. Here we present a slower mode of hydrofracture, where hairline surface fractures intersect supraglacial streams, and hypothesize that penetration depth is critically limited by water supply and englacial refreezing. We develop a model of stream-fed ...