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Natural Hazards and Earth System Sciences An interactive open-access journal of the European Geosciences Union
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https://doi.org/10.5194/nhess-2020-112
© Author(s) 2020. This work is distributed under
the Creative Commons Attribution 4.0 License.
https://doi.org/10.5194/nhess-2020-112
© Author(s) 2020. This work is distributed under
the Creative Commons Attribution 4.0 License.

Submitted as: research article 17 Apr 2020

Submitted as: research article | 17 Apr 2020

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This preprint is currently under review for the journal NHESS.

Multi-temporal landslide activity investigation by spaceborne SAR interferometry: Polish Carpathians case study

Kamila Pawluszek-Filipiak1, Mahdi Motagh2,3, and Andrzej Borkowski1 Kamila Pawluszek-Filipiak et al.
  • 1Institute of Geodesy and Geoinformatics, Wroclaw University of Environmental and Life Sciences, Wroclaw, Poland
  • 2Institute of Photogrammetry and Geoinformation (IPI), Leibniz Universität Hannover, Hannover, Germany
  • 3Hemholtz Center Potsdam, GFZ German Research Center for Geosciences, Potsdam, Germany

Abstract. The main goal of this research is the activity state verification of existing landslide inventory maps using Persistent Scatterer Interferometry (PSI). The study was conducted in Małopolskie municipality, a rural setting with a sparse urbanization in Polish Flysch Carpathians. PSI have been applied using Synthetic Aperture Radar (SAR) data from ALOS PALSAR, and Sentinel 1A/B from different acquisition geometry (ascending and descending orbit) to increase PS coverage and overcome geometric effects due to layover and shadowing. The Line-Of-Sight PSI measurements were projected to the steepest slope, which allows to homogenize the results from diverse acquisition modes and to compare displacement velocities with different slope orientations. Additionally, landslide intensity (motion rate) and expected damages maps were generated and verified during filed investigations. High correlation between PSI results and in-situ damage observations has been confirmed. Activity state and landslide-related expected damage map have been confirmed for 43 out of a total of 50 landslides investigated in the field. The short temporal baseline provided by Sentinel satellite 1A/B data allows increasing of the PS density significantly. The study substantiates usefulness of SAR based landslide activity monitoring for land use and land development, even in rural areas.

Kamila Pawluszek-Filipiak et al.

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Kamila Pawluszek-Filipiak et al.

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