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The glaciated valley landsystem of Morsárjökull, southeast Iceland

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  • David J. A. Evans
  • Marek Ewertowski
  • Chris Orton

Abstract

A 1:4470 map of the Morsárjökull foreland, southern Iceland shows the spatial distribution of post Little Ice Age glacial sediment–landform associations pertaining to the operation of a typical active temperate outlet glacier of the south Vatnajökull ice cap. The map depicts an exemplar for the debris-charged glaciated valley landsystem, with characteristics further indicative of ‘uncovered alpine glaciers’, such as the uneven distribution of moraine volume, the localized appearance of a fluted subglacial bed and within-valley lateral moraine asymmetry. Such glaciers are characterized by strong glacier-climate coupling, because temporally and spatially sporadic rock avalanche-type medial moraines can only locally retard ablation. This morainic debris also has a short residence time in the glacier system due to its strong coupling with the proglacial fluvial system and resulting in efficient sediment transfer. Areas of more substantial latero-frontal moraine document phases of rock slope failure onto the snout and the passage of the debris to the ice margin.

Suggested Citation

  • David J. A. Evans & Marek Ewertowski & Chris Orton, 2017. "The glaciated valley landsystem of Morsárjökull, southeast Iceland," Journal of Maps, Taylor & Francis Journals, vol. 13(2), pages 909-920, November.
    • Handle: RePEc:taf:tjomxx:v:13:y:2017:i:2:p:909-920
    DOI: 10.1080/17445647.2017.1401491
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    1. David J. A. Evans & Marek Ewertowski & Chris Orton, 2017. "Skaftafellsjökull, Iceland: glacial geomorphology recording glacier recession since the Little Ice Age," Journal of Maps, Taylor & Francis Journals, vol. 13(2), pages 358-368, November.
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