Analysis of the Velocity Changes of the Jakobshavn Glacier Based on SAR Imagery

Łukosz Magdalena (), Hejmanowski Ryszard and Witkowski Wojciech T.
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Łukosz Magdalena: Department of Mining Areas Protection, Geoinformatics and Mining Surveying, AGH University of Science and Technology, Cracow, Poland
Hejmanowski Ryszard: Department of Mining Areas Protection, Geoinformatics and Mining Surveying, AGH University of Science and Technology, Cracow, Poland
Witkowski Wojciech T.: Department of Mining Areas Protection, Geoinformatics and Mining Surveying, AGH University of Science and Technology, Cracow, Poland

Quaestiones Geographicae, 2022, vol. 41, issue 1, 93-105

Abstract: The study analyzes the changes in dynamics of the Jakobshavn Glacier in summer and winter in 2017 and 2021. Satellite radar observations and the available database were used for this. Moreover, the influence of the time baseline between SAR images on the quality of the results was also investigated. The velocities computed from Sentinel-1 images and the offset-tracking technique were compared with the MEaSUREs database information. The results showed that Jakobshavn Glacier accelerated in 2021 up to 39.0 m d−1. However, this value may be underestimated due to the resolution of Sentinel-1 data. The results therefore confirm the acceleration of the glacier melting process, which may be a result of the observed climate changes on our planet.

Keywords: marine-terminating glacier; offset-tracking; SAR imagery; glacier surface velocity; temporal changes in dynamics (search for similar items in EconPapers)
Date: 2022
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Persistent link: https://EconPapers.repec.org/RePEc:vrs:quageo:v:41:y:2022:i:1:p:93-105:n:6

DOI: 10.2478/quageo-2022-0007

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