Effect of near‐terminus subglacial hydrology on tidewater glacier submarine melt rates

Submarine melting of Greenlandic tidewater glacier termini is proposed as a possible mechanism driving their recent thinning and retreat. We use a general circulation model, MITgcm, to simulate water circulation driven by subglacial discharge at the terminus of an idealized tidewater glacier. We vary the spatial distribution of subglacial discharge emerging at the grounding line of the glacier and examine the effect on submarine melt volume and distribution. We find that subglacial hydrology exerts an important control on submarine melting; under certain conditions a distributed system can induce a factor 5 more melt than a channelized system, with plumes from a single channel inducing melt over only a localized area. Subglacial hydrology also controls the spatial distribution of melt, which has the potential to control terminus morphology and calving style. Our results highlight the need to constrain near‐terminus subglacial hydrology at tidewater glaciers if we are to represent ocean forcing accurately.

• Publication year

  2015

• Venue

  Geophysical Research Letters

• Publication date

  2015-04-28

• Fields of study

  Geology, Environmental Science

• Identifiers
  DOI 10.1002/2014GL062494
• External record

  Open on Semantic Scholar

• Source metadata

  Semantic Scholar

• No claims are published for this paper.

• No concepts are published for this paper.

• Modeling the impact of glacial runoff on fjord circulation and submarine melt rate using a new subgrid-scale parameterization for glacial plumes

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• Oceanic heat delivery via Kangerdlugssuaq Fjord to the south‐east Greenland ice sheet

  2014influential reference
• Ice–ocean interaction and calving front morphology at two west Greenland tidewater outlet glaciers

  2014cited by this paper
• Subaqueous melting of Store Glacier, west Greenland from three‐dimensional, high‐resolution numerical modeling and ocean observations

  2013influential reference
• Seasonal variability of submarine melt rate and circulation in an East Greenland fjord

  2013influential reference
• Understanding the Dynamic Response of Greenland's Marine Terminating Glaciers to Oceanic and Atmospheric Forcing: A White Paper

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  2012cited by this paper
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  2012influential reference
• Spreading of warm ocean waters around Greenland as a possible cause for glacier acceleration

  2012cited by this paper
• Convection-Driven Melting near the Grounding Lines of Ice Shelves and Tidewater Glaciers

  2011influential reference
• Warming of waters in an East Greenland fjord prior to glacier retreat: mechanisms and connection to large-scale atmospheric conditions

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  2010influential reference
• Rapid circulation of warm subtropical waters in a major glacial fjord in East Greenland

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  1980cited by this paper
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  1956cited by this paper

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