In situ quantification of supraglacial cryoconite morphodynamics using time-lapse imaging: an example from Svalbard

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dc.contributor.author Irvine-Fynn, Tristram D. L.
dc.contributor.author Bridge, Jonathan W.
dc.contributor.author Hodson, Andrew J.
dc.date.accessioned 2011-10-26T13:37:56Z
dc.date.available 2011-10-26T13:37:56Z
dc.date.issued 2011-10-26
dc.identifier.citation Irvine-Fynn , T D L , Bridge , J W & Hodson , A J 2011 , ' In situ quantification of supraglacial cryoconite morphodynamics using time-lapse imaging: an example from Svalbard ' Journal of Glaciology , vol 57 , no. 204 , pp. 651-657 . en
dc.identifier.issn 1727-5652
dc.identifier.other PURE: 172252
dc.identifier.other dspace: 2160/7633
dc.identifier.uri http://hdl.handle.net/2160/7633
dc.identifier.uri http://www.ingentaconnect.com/content/igsoc/jog/2011/00000057/00000204/art00007 en
dc.description Irvine-Fynn, T. D. L., Bridge, J. W., Hodson, A. J. (2011). In situ quantification of supraglacial cryoconite morphodynamics using time-lapse imaging: an example from Svalbard. Journal of Glaciology, 57 (204), 651-657. en
dc.description.abstract There is growing recognition of the significance of biologically active supraglacial dust (cryoconite) for glacial mass balance and ecology. Nonetheless, the processes controlling the distribution, transport and fate of cryoconite particles in the glacial system remain somewhat poorly understood. Here, using a 216 hour time series of plot-scale (0.04 m2) images, we quantify the small-scale dynamics of cryoconite on Longyearbreen, Svalbard. We show significant fluctuations in the apparent cryoconite area and dispersion of cryoconite over the plot, within the 9 day period of observations. However, the net movement of cryoconite across the ice surface averaged only 5.3 mm d−1. High-resolution measurements of cryoconite granule motion showed constant, random motion but weak correlation with meteorological forcing factors and no directional trends for individual particle movement. The high-resolution time-series data suggest that there is no significant net transport of dispersed cryoconite material across glacier surfaces. The areal coverage and motion of particles within and between cryoconite holes appears to be a product of differential melting leading to changes in plot-scale microtopography, local meltwater flow dynamics and weather-dependent events. These subtle processes of cryoconite redistribution may be significant for supraglacial albedo and have bearing on the surface energy balance at the glacier scale. en
dc.format.extent 7 en
dc.language.iso eng
dc.relation.ispartof Journal of Glaciology en
dc.title In situ quantification of supraglacial cryoconite morphodynamics using time-lapse imaging: an example from Svalbard en
dc.type Text en
dc.type.publicationtype Article (Journal) en
dc.identifier.doi http://dx.doi.org/10.3189/002214311797409695
dc.contributor.institution Institute of Geography & Earth Sciences en
dc.contributor.institution Centre for Glaciology en
dc.description.status Peer reviewed en


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