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Browsing by Author "Porter, Philip R."
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Ice-marginal sediment delivery to the surface of a high-arctic glacier: Austre Broggerbreen, Svalbard
Porter, Philip R.; Vatne, Geir; Ng, Felix; Irvine-Fynn, Tristram D. L. (2010)Enhanced delivery of water-saturated, ice-marginal sediments to the glacier surface is a response to glacier thinning that has the potential to increase both levels of sediment transfer through the glacier hydrological ... -
Seasonally stable temperature gradients through supraglacial debris in the Everest region of Nepal, Central Himalaya
Rowan, Ann V.; Nicholson, Lindsey I.; Quincey, Duncan J.; Gibson, Morgan J.; Irvine-Fynn, Tristram D.L.; Watson, C. Scott; Wagnon, Patrick; Rounce, David R.; Thompson, Sarah S.; Porter, Philip R.; Glasser, Neil F. (2020-12-03)Rock debris covers about 30% of glacier ablation areas in the Central Himalaya and modifies the impact of atmospheric conditions on mass balance. The thermal properties of supraglacial debris are diurnally variable but ... -
Spatially consistent microbial biomass and future cellular carbon release from melting Northern Hemisphere glacier surfaces
Stevens, Ian T.; Irvine-Fynn, Tristram D. L.; Edwards, Arwyn; Mitchell, Andrew C.; Cook, Joseph M.; Porter, Philip R.; Holt, Tom O.; Huss, Matthias; Fettweis, Xavier; Moorman, Brian J.; Sattler, Birgit; Hodson, Andy J. (2022-11-10)Melting glacier ice surfaces host active microbial communities that enhance glacial melt, contribute to biogeochemical cycling, and nourish downstream ecosystems; but these communities remain poorly characterised. Over the ... -
Time‐lapse photogrammetry reveals hydrological controls of fine‐scale High‐Arctic glacier surface roughness evolution
Irvine‐Fynn, Tristram D. L.; Holt, Tom O.; James, Timothy D.; Smith, Mark W.; Rutter, Nick; Porter, Philip R.; Hodson, Andrew J. (2022-02-23)In a warming Arctic, as glacier snowlines rise, short‐ to medium‐term increases in seasonal bare‐ice extent are forecast for the next few decades. These changes will enhance the importance of turbulent energy fluxes for ...