Preprints
https://doi.org/10.5194/essd-2021-48
https://doi.org/10.5194/essd-2021-48

  06 Apr 2021

06 Apr 2021

Review status: this preprint is currently under review for the journal ESSD.

Baseline data for monitoring geomorphological effects of glacier lake outburst flood: A very high-resolution image and GIS datasets of the distal part of the Zackenberg River, northeast Greenland

Aleksandra M. Tomczyk and Marek W. Ewertowski Aleksandra M. Tomczyk and Marek W. Ewertowski
  • Faculty of Geographical and Geological Sciences, Adam Mickiewicz University, Poznań, 61-680, Poland

Abstract. The Arctic regions experience intense transformations, such that efficient methods are needed to monitor and understand Arctic
landscape changes in response to climate warming and low-frequency high-magnitude events. One example of such events,
capable of causing serious landscape changes, is glacier lake outburst floods. On 6 August 2017, a flood event related to glacial 
lake outburst affected the Zackenberg River (NE Greenland). Here, we provided a very high-resolution dataset representing
unique time-series of data captured immediately before (5 August 2017), during (6 August 2017), and after (8 August 2017)
the flood. Our dataset covers a 2.1-km-long distal section of the Zackenberg River. The available files comprise: (1)
unprocessed images captured using an unmanned aerial vehicle (UAV): https://doi.org/10.5281/zenodo.4495282 (Tomczyk
and Ewertowski, 2021a); and (2) results of structure-from-motion (SfM) processing (orthomosaics, digital elevation models, 
and hillshade models in a raster format), uncertainty assessments (precision maps) and effects of geomorphological mapping
in vector formats: https://doi.org/10.5281/zenodo.4498296 (Tomczyk and Ewertowski, 2021b). Potential applications of the
presented dataset include: (1) assessment and quantification of landscape changes as an immediate result of glacier lake
outburst flood; (2) long-term monitoring of high-Arctic river valley development (in conjunction with other datasets); (3)
establishing a baseline for quantification of geomorphological impacts of future glacier lake outburst floods; (4) assessment of 
geohazards related to bank erosion and debris flow development (hazards for research station infrastructure – station buildings
and bridge); (5) monitoring of permafrost degradation; and (6) modelling flood impacts on river ecosystem, transport capacity,
and channel stability.  

Aleksandra M. Tomczyk and Marek W. Ewertowski

Status: open (until 16 Jun 2021)

Comment types: AC – author | RC – referee | CC – community | EC – editor | CEC – chief editor | : Report abuse
  • RC1: 'Comment on essd-2021-48', Anonymous Referee #1, 09 Apr 2021 reply
  • RC2: 'Comment on essd-2021-48', Dmitry Petrakov, 09 May 2021 reply
  • RC3: 'Comment on essd-2021-48', Anonymous Referee #3, 13 May 2021 reply
  • RC4: 'Comment on essd-2021-48', Anonymous Referee #4, 08 Jun 2021 reply

Aleksandra M. Tomczyk and Marek W. Ewertowski

Data sets

Before-, during-, and after-flood UAV-generated images of the distal part of Zackenberg river, northeast Greenland (August 2017) Tomczyk, Aleksandra Magdalena; Ewertowski, Marek Wojciech https://zenodo.org/record/4495282

Before-, during-, and after-flood UAV-generated digital elevation models, orthomosaics, and GIS datasets of the distal part of Zackenberg river, northeast Greenland (August 2017) Tomczyk, Aleksandra Magdalena; Ewertowski, Marek Wojciech https://zenodo.org/record/4498296

Aleksandra M. Tomczyk and Marek W. Ewertowski

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Short summary
We collected detailed (cm-scale) topographical data to illustrate how a single flood event can modify river landscape in the high-Arctic setting of Zackenberg Valley, NE Greenland. The studied flood was a result of an outburst from a glacier-dammed lake. We used drones to capture images immediately before, during, and after the flood for the 2-km-long section of the river. Data can be used for monitoring and modelling of flood events and assessment of geohazards for Zackenberg Research Station.