Now showing items 1-12 of 12

    • Characteristics and dynamics of two major Greenland glacial fjords 

      Sutherland, David A.; Straneo, Fiamma; Pickart, Robert S. (John Wiley & Sons, 2014-06-16)
      The circulation regimes of two major outlet glacial fjords in southeastern Greenland, Sermilik Fjord (SF) and Kangerdlugssuaq Fjord (KF), are investigated using data collected in summer 2009. The two fjords show similar ...
    • Constraints on the lake volume required for hydro-fracture through ice sheets 

      Krawczynski, Michael J.; Behn, Mark D.; Das, Sarah B.; Joughin, Ian (American Geophysical Union, 2009-05-16)
      Water-filled cracks are an effective mechanism to drive hydro-fractures through thick ice sheets. Crack geometry is therefore critical in assessing whether a supraglacial lake contains a sufficient volume of water to keep ...
    • Effect of a sheared flow on iceberg motion and melting 

      FitzMaurice, Anna; Straneo, Fiamma; Cenedese, Claudia; Andres, Magdalena (John Wiley & Sons, 2016-12-27)
      Icebergs account for approximately half the freshwater flux into the ocean from the Greenland and Antarctic ice sheets and play a major role in the distribution of meltwater into the ocean. Global climate models distribute ...
    • Ice sheet–derived submarine groundwater discharge on Greenland's continental shelf 

      DeFoor, Whitney; Person, Mark; Larsen, Hans Christian; Lizarralde, Daniel; Cohen, Denis; Dugan, Brandon (American Geophysical Union, 2011-07-28)
      Isotopically light (−1‰ to −8‰ δ18O) and fresh pore fluids (300–520 mM Cl−) were found in continental shelf sediments up to 100 km offshore of southeastern (SE) Greenland, suggesting infiltration and mixing of ice sheet ...
    • Iceberg meltwater fluxes dominate the freshwater budget in Greenland's iceberg-congested glacial fjords 

      Enderlin, Ellyn; Hamilton, Gordon S.; Straneo, Fiamma; Sutherland, David A. (John Wiley & Sons, 2016-11-09)
      Freshwater fluxes from the Greenland ice sheet have increased over the last two decades due to increases in liquid (i.e., surface and submarine meltwater) and solid ice (i.e., iceberg) fluxes. To predict potential ice ...
    • The impact of resolution on the representation of southeast Greenland barrier winds and katabatic flows 

      Moore, G. W. K.; Renfrew, Ian A.; Harden, Benjamin E.; Mernild, Sebastian H. (John Wiley & Sons, 2015-04-19)
      Southern Greenland is characterized by a number of low-level high wind speed weather systems that are the result of topographic flow distortion. These systems include barrier winds and katabatic flow that occur along its ...
    • Moored observations of synoptic and seasonal variability in the East Greenland Coastal Current 

      Harden, Benjamin E.; Straneo, Fiamma; Sutherland, David A. (John Wiley & Sons, 2014-12-23)
      We present a year-round assessment of the hydrographic variability within the East Greenland Coastal Current on the Greenland shelf from five synoptic crossings and 4 years of moored hydrographic data. From the five synoptic ...
    • Noble gas signatures in Greenland : tracing glacial meltwater sources 

      Niu, Yi; Castro, M. Clara; Aciego, Sarah M.; Hall, Chris M.; Stevenson, Emily I.; Arendt, Carli A.; Das, Sarah B. (John Wiley & Sons, 2015-11-06)
      This study represents the first comprehensive noble gas study in glacial meltwater from the Greenland Ice Sheet. It shows that most samples are in disequilibrium with surface collection conditions. A preliminary Ne and Xe ...
    • Spreading of Greenland meltwaters in the ocean revealed by noble gases 

      Beaird, Nicholas; Straneo, Fiamma; Jenkins, William J. (John Wiley & Sons, 2015-09-30)
      We present the first noble gas observations in a proglacial fjord in Greenland, providing an unprecedented view of surface and submarine melt pathways into the ocean. Using Optimum Multiparameter Analysis, noble gas ...
    • Structure and dynamics of a subglacial discharge plume in a Greenlandic fjord 

      Mankoff, Kenneth D.; Straneo, Fiamma; Cenedese, Claudia; Das, Sarah B.; Richards, Clark G.; Singh, Hanumant (John Wiley & Sons, 2016-12-15)
      Discharge of surface-derived meltwater at the submerged base of Greenland's marine-terminating glaciers creates subglacial discharge plumes that rise along the glacier/ocean interface. These plumes impact submarine melting, ...
    • Trend and interannual variability in southeast Greenland Sea Ice : impacts on coastal Greenland climate variability 

      Moore, G. W. K.; Straneo, Fiamma; Oltmanns, Marilena (John Wiley & Sons, 2014-12-02)
      We describe the recent occurrence of a region of diminished sea ice cover or “notch” offshore of the Kangerdlugssuaq Fiord, the site of the largest tidewater glacier along Greenland's southeast coast. The notch's location ...
    • Utility of Rn-222 as a passive tracer of subglacial distributed system drainage 

      Linhoff, Benjamin S.; Charette, Matthew A.; Nienow, Peter W.; Wadham, Jemma L.; Tedstone, Andrew; Cowton, Thomas (Elsevier, 2017-01-23)
      Water flow beneath the Greenland Ice Sheet (GrIS) has been shown to include slow-inefficient (distributed) and fast-efficient (channelized) drainage systems, in response to meltwater delivery to the bed via both moulins ...