Quantifying Changes in Extent and Velocity of the Hornbreen/Hambergbreen Glacial System (SW, Spitsbergen) Based on Timeseries of Multispectral Satellite Imagery
This study focuses on the Hornsund region in Svalbard, where the temperature has risen by 1.14 °C per decade, six times faster than the global average. The accelerating temperature rise in the Arctic has had significant impacts on the Svalbard glaciers, including the Hornbreen–Hambergbreen system (H...
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ftmdpi:oai:mdpi.com:/2072-4292/15/14/3529/ 2023-08-20T04:05:00+02:00 Quantifying Changes in Extent and Velocity of the Hornbreen/Hambergbreen Glacial System (SW, Spitsbergen) Based on Timeseries of Multispectral Satellite Imagery Dawid Saferna Małgorzata Błaszczyk Mariusz Grabiec Bogdan Gądek agris 2023-07-13 application/pdf https://doi.org/10.3390/rs15143529 EN eng Multidisciplinary Digital Publishing Institute Earth Observation for Emergency Management https://dx.doi.org/10.3390/rs15143529 https://creativecommons.org/licenses/by/4.0/ Remote Sensing; Volume 15; Issue 14; Pages: 3529 glacier velocity Hornsund Hornbreen Hambergbreen feature tracking satellite imagery radiometric resolution Text 2023 ftmdpi https://doi.org/10.3390/rs15143529 2023-08-01T10:51:00Z This study focuses on the Hornsund region in Svalbard, where the temperature has risen by 1.14 °C per decade, six times faster than the global average. The accelerating temperature rise in the Arctic has had significant impacts on the Svalbard glaciers, including the Hornbreen–Hambergbreen system (HH system). The HH system connects Sørkapp Land with the rest of Spitsbergen, and its disintegration will lead to the formation of a new island. This study assesses the annual and seasonal changes in the velocity of the HH system and fluctuations of the position of the termini from 1985 to 2021 and their relationship with environmental factors. Furthermore, an assessment was made of the possible date of opening of the Hornsund strait. The study also investigates the impact of the radiometric resolution of satellite images on the quality of the velocity field and the detection of glacier features. Multispectral imagery was used to assess the velocity fields with Glacier Image Velocimetry (v 1.01) software, which uses the feature tracking method. In addition, the Glacier Termini Tracking plugin was used to acquire data on the fluctuating positions of the termini. The long-term mean annual velocity of the Hornbreen was 431 m a−1, while that of Hambergbreen was 141 m a−1. The peak seasonal velocity and fluctuations of the terminus position of Hambergbreen were delayed by approximately one month when compared to Hornbreen. Overall, air and sea surface temperatures influence the velocities and fluctuations of the termini, while precipitation plays a secondary role. If the recession continues, the Hornsund strait may open around 2053. An increase in the quality of velocity maps from 12.7% to 50.2% was found with an increase in radiometric resolution from 8 bit to 16 bit. Text Arctic glacier Hornsund Svalbard Sørkapp Land Spitsbergen MDPI Open Access Publishing Arctic Svalbard Hornsund ENVELOPE(15.865,15.865,76.979,76.979) Sørkapp Land ENVELOPE(16.523,16.523,76.801,76.801) Hornbreen ENVELOPE(16.689,16.689,77.066,77.066) Hambergbreen ENVELOPE(17.098,17.098,77.050,77.050) Remote Sensing 15 14 3529 |
institution |
Open Polar |
collection |
MDPI Open Access Publishing |
op_collection_id |
ftmdpi |
language |
English |
topic |
glacier velocity Hornsund Hornbreen Hambergbreen feature tracking satellite imagery radiometric resolution |
spellingShingle |
glacier velocity Hornsund Hornbreen Hambergbreen feature tracking satellite imagery radiometric resolution Dawid Saferna Małgorzata Błaszczyk Mariusz Grabiec Bogdan Gądek Quantifying Changes in Extent and Velocity of the Hornbreen/Hambergbreen Glacial System (SW, Spitsbergen) Based on Timeseries of Multispectral Satellite Imagery |
topic_facet |
glacier velocity Hornsund Hornbreen Hambergbreen feature tracking satellite imagery radiometric resolution |
description |
This study focuses on the Hornsund region in Svalbard, where the temperature has risen by 1.14 °C per decade, six times faster than the global average. The accelerating temperature rise in the Arctic has had significant impacts on the Svalbard glaciers, including the Hornbreen–Hambergbreen system (HH system). The HH system connects Sørkapp Land with the rest of Spitsbergen, and its disintegration will lead to the formation of a new island. This study assesses the annual and seasonal changes in the velocity of the HH system and fluctuations of the position of the termini from 1985 to 2021 and their relationship with environmental factors. Furthermore, an assessment was made of the possible date of opening of the Hornsund strait. The study also investigates the impact of the radiometric resolution of satellite images on the quality of the velocity field and the detection of glacier features. Multispectral imagery was used to assess the velocity fields with Glacier Image Velocimetry (v 1.01) software, which uses the feature tracking method. In addition, the Glacier Termini Tracking plugin was used to acquire data on the fluctuating positions of the termini. The long-term mean annual velocity of the Hornbreen was 431 m a−1, while that of Hambergbreen was 141 m a−1. The peak seasonal velocity and fluctuations of the terminus position of Hambergbreen were delayed by approximately one month when compared to Hornbreen. Overall, air and sea surface temperatures influence the velocities and fluctuations of the termini, while precipitation plays a secondary role. If the recession continues, the Hornsund strait may open around 2053. An increase in the quality of velocity maps from 12.7% to 50.2% was found with an increase in radiometric resolution from 8 bit to 16 bit. |
format |
Text |
author |
Dawid Saferna Małgorzata Błaszczyk Mariusz Grabiec Bogdan Gądek |
author_facet |
Dawid Saferna Małgorzata Błaszczyk Mariusz Grabiec Bogdan Gądek |
author_sort |
Dawid Saferna |
title |
Quantifying Changes in Extent and Velocity of the Hornbreen/Hambergbreen Glacial System (SW, Spitsbergen) Based on Timeseries of Multispectral Satellite Imagery |
title_short |
Quantifying Changes in Extent and Velocity of the Hornbreen/Hambergbreen Glacial System (SW, Spitsbergen) Based on Timeseries of Multispectral Satellite Imagery |
title_full |
Quantifying Changes in Extent and Velocity of the Hornbreen/Hambergbreen Glacial System (SW, Spitsbergen) Based on Timeseries of Multispectral Satellite Imagery |
title_fullStr |
Quantifying Changes in Extent and Velocity of the Hornbreen/Hambergbreen Glacial System (SW, Spitsbergen) Based on Timeseries of Multispectral Satellite Imagery |
title_full_unstemmed |
Quantifying Changes in Extent and Velocity of the Hornbreen/Hambergbreen Glacial System (SW, Spitsbergen) Based on Timeseries of Multispectral Satellite Imagery |
title_sort |
quantifying changes in extent and velocity of the hornbreen/hambergbreen glacial system (sw, spitsbergen) based on timeseries of multispectral satellite imagery |
publisher |
Multidisciplinary Digital Publishing Institute |
publishDate |
2023 |
url |
https://doi.org/10.3390/rs15143529 |
op_coverage |
agris |
long_lat |
ENVELOPE(15.865,15.865,76.979,76.979) ENVELOPE(16.523,16.523,76.801,76.801) ENVELOPE(16.689,16.689,77.066,77.066) ENVELOPE(17.098,17.098,77.050,77.050) |
geographic |
Arctic Svalbard Hornsund Sørkapp Land Hornbreen Hambergbreen |
geographic_facet |
Arctic Svalbard Hornsund Sørkapp Land Hornbreen Hambergbreen |
genre |
Arctic glacier Hornsund Svalbard Sørkapp Land Spitsbergen |
genre_facet |
Arctic glacier Hornsund Svalbard Sørkapp Land Spitsbergen |
op_source |
Remote Sensing; Volume 15; Issue 14; Pages: 3529 |
op_relation |
Earth Observation for Emergency Management https://dx.doi.org/10.3390/rs15143529 |
op_rights |
https://creativecommons.org/licenses/by/4.0/ |
op_doi |
https://doi.org/10.3390/rs15143529 |
container_title |
Remote Sensing |
container_volume |
15 |
container_issue |
14 |
container_start_page |
3529 |
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1774715415721672704 |