Analyzing ice dynamics using Sentinel-1 data at the Solheimajoküll Glacier, Iceland
The climate in southern Iceland has warmed over the last 70 years, resulting in accelerated glacier dynamics at the Solheimajoküll glacier. In this study, we compare glacier terminus locations from 1973 to 2018, to changes in climate across the study area, and we derive ice-surface velocities (2015–...
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ftdatacite:10.6084/m9.figshare.12909630 2023-05-15T16:21:37+02:00 Analyzing ice dynamics using Sentinel-1 data at the Solheimajoküll Glacier, Iceland Gómez, Diego Salvador, Pablo Sanz, Julia Urbazaev, Mikhail Casanova, José Luis 2020 https://dx.doi.org/10.6084/m9.figshare.12909630 https://tandf.figshare.com/articles/dataset/Analyzing_ice_dynamics_using_Sentinel-1_data_at_the_Solheimajok_ll_Glacier_Iceland/12909630 unknown Taylor & Francis https://dx.doi.org/10.1080/15481603.2020.1814031 Creative Commons Attribution 4.0 International https://creativecommons.org/licenses/by/4.0/legalcode cc-by-4.0 CC-BY Medicine Biotechnology 59999 Environmental Sciences not elsewhere classified FOS Earth and related environmental sciences Ecology FOS Biological sciences 69999 Biological Sciences not elsewhere classified dataset Dataset 2020 ftdatacite https://doi.org/10.6084/m9.figshare.12909630 https://doi.org/10.1080/15481603.2020.1814031 2021-11-05T12:55:41Z The climate in southern Iceland has warmed over the last 70 years, resulting in accelerated glacier dynamics at the Solheimajoküll glacier. In this study, we compare glacier terminus locations from 1973 to 2018, to changes in climate across the study area, and we derive ice-surface velocities (2015–2018) from satellite remote-sensing imagery (Sentinel-1) using the offset-tracking method. There have been two regional temperature trends in the study period: cooling (1973–1979) and warming (1980–2018). Our results indicate a time lag of about 20 years between the onset of glacier retreat (−53 m/year since 2000) and the inception of the warming period. Seasonally, the velocity time series suggest acceleration during the summer melt season since 2016, whereas glacier velocities during accumulation months were constant. The highest velocities were observed at high elevations where the ice-surface slope is the steepest. We tested several scenarios to assess the hydrological time response to glacier accelerations, with the highest correlations being found between one and 30 days after the velocity estimates. Monthly correlation analyses indicated inter-annual and intra-annual variability in the glacier dynamics. Additionally, we investigate the linkage between glacier velocities and meltwater outflow parameters as they provide useful information about internal processes in the glacier. Velocity estimates positively correlate with water level and negatively correlate with water conductivity between April and August. There is also a disruption in the correlation trend between water conductivity and ice velocity in June, potentially due to a seasonal release of geothermal water. Dataset glacier Iceland DataCite Metadata Store (German National Library of Science and Technology) |
institution |
Open Polar |
collection |
DataCite Metadata Store (German National Library of Science and Technology) |
op_collection_id |
ftdatacite |
language |
unknown |
topic |
Medicine Biotechnology 59999 Environmental Sciences not elsewhere classified FOS Earth and related environmental sciences Ecology FOS Biological sciences 69999 Biological Sciences not elsewhere classified |
spellingShingle |
Medicine Biotechnology 59999 Environmental Sciences not elsewhere classified FOS Earth and related environmental sciences Ecology FOS Biological sciences 69999 Biological Sciences not elsewhere classified Gómez, Diego Salvador, Pablo Sanz, Julia Urbazaev, Mikhail Casanova, José Luis Analyzing ice dynamics using Sentinel-1 data at the Solheimajoküll Glacier, Iceland |
topic_facet |
Medicine Biotechnology 59999 Environmental Sciences not elsewhere classified FOS Earth and related environmental sciences Ecology FOS Biological sciences 69999 Biological Sciences not elsewhere classified |
description |
The climate in southern Iceland has warmed over the last 70 years, resulting in accelerated glacier dynamics at the Solheimajoküll glacier. In this study, we compare glacier terminus locations from 1973 to 2018, to changes in climate across the study area, and we derive ice-surface velocities (2015–2018) from satellite remote-sensing imagery (Sentinel-1) using the offset-tracking method. There have been two regional temperature trends in the study period: cooling (1973–1979) and warming (1980–2018). Our results indicate a time lag of about 20 years between the onset of glacier retreat (−53 m/year since 2000) and the inception of the warming period. Seasonally, the velocity time series suggest acceleration during the summer melt season since 2016, whereas glacier velocities during accumulation months were constant. The highest velocities were observed at high elevations where the ice-surface slope is the steepest. We tested several scenarios to assess the hydrological time response to glacier accelerations, with the highest correlations being found between one and 30 days after the velocity estimates. Monthly correlation analyses indicated inter-annual and intra-annual variability in the glacier dynamics. Additionally, we investigate the linkage between glacier velocities and meltwater outflow parameters as they provide useful information about internal processes in the glacier. Velocity estimates positively correlate with water level and negatively correlate with water conductivity between April and August. There is also a disruption in the correlation trend between water conductivity and ice velocity in June, potentially due to a seasonal release of geothermal water. |
format |
Dataset |
author |
Gómez, Diego Salvador, Pablo Sanz, Julia Urbazaev, Mikhail Casanova, José Luis |
author_facet |
Gómez, Diego Salvador, Pablo Sanz, Julia Urbazaev, Mikhail Casanova, José Luis |
author_sort |
Gómez, Diego |
title |
Analyzing ice dynamics using Sentinel-1 data at the Solheimajoküll Glacier, Iceland |
title_short |
Analyzing ice dynamics using Sentinel-1 data at the Solheimajoküll Glacier, Iceland |
title_full |
Analyzing ice dynamics using Sentinel-1 data at the Solheimajoküll Glacier, Iceland |
title_fullStr |
Analyzing ice dynamics using Sentinel-1 data at the Solheimajoküll Glacier, Iceland |
title_full_unstemmed |
Analyzing ice dynamics using Sentinel-1 data at the Solheimajoküll Glacier, Iceland |
title_sort |
analyzing ice dynamics using sentinel-1 data at the solheimajoküll glacier, iceland |
publisher |
Taylor & Francis |
publishDate |
2020 |
url |
https://dx.doi.org/10.6084/m9.figshare.12909630 https://tandf.figshare.com/articles/dataset/Analyzing_ice_dynamics_using_Sentinel-1_data_at_the_Solheimajok_ll_Glacier_Iceland/12909630 |
genre |
glacier Iceland |
genre_facet |
glacier Iceland |
op_relation |
https://dx.doi.org/10.1080/15481603.2020.1814031 |
op_rights |
Creative Commons Attribution 4.0 International https://creativecommons.org/licenses/by/4.0/legalcode cc-by-4.0 |
op_rightsnorm |
CC-BY |
op_doi |
https://doi.org/10.6084/m9.figshare.12909630 https://doi.org/10.1080/15481603.2020.1814031 |
_version_ |
1766009624633278464 |