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UAV-based remote sensing of immediate changes in geomorphology following a glacial lake outburst flood at the Zackenberg river, northeast Greenland

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  • Aleksandra M. Tomczyk
  • Marek W. Ewertowski

Abstract

Two detailed geomorphological maps (1:2000) depicting landscape changes as a result of a glacial lake outburst flood were produced for the 2.1-km-long section of the Zackenberg river, NE Greenland. The maps document the riverscape before the flood (5 August 2017) and immediately after the flood (8 August 2017), illustrating changes to the riverbanks and morphology of the channel. A series of additional maps (1:800) represent case studies of different types of riverbank responses, emphasising the importance of the lateral thermo-erosion and bank collapsing as significant immediate effects of the flood. The average channel width increased from 40.75 m pre-flood to 44.59 m post-flood, whereas the length of active riverbanks decreased from 1729 to 1657 m. The new deposits related to 2017 flood covered 93,702 m2. The developed maps demonstrated the applicability of small Unmanned Aerial Vehicles (UAVs) for investigating the direct effects of floods, even in the harsh Arctic environment.

Suggested Citation

  • Aleksandra M. Tomczyk & Marek W. Ewertowski, 2020. "UAV-based remote sensing of immediate changes in geomorphology following a glacial lake outburst flood at the Zackenberg river, northeast Greenland," Journal of Maps, Taylor & Francis Journals, vol. 16(1), pages 86-100, January.
    • Handle: RePEc:taf:tjomxx:v:16:y:2020:i:1:p:86-100
    DOI: 10.1080/17445647.2020.1749146
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    Cited by:

    1. Gheorghe-Gavrilă Hognogi & Ana-Maria Pop & Alexandra-Camelia Marian-Potra & Tania Someșfălean, 2021. "The Role of UAS–GIS in Digital Era Governance. A Systematic Literature Review," Sustainability, MDPI, vol. 13(19), pages 1-31, October.

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