Circum-arctic changes in the flow of glaciers and ice caps from satellite SAR data between the 1990s and 2017
We computed circum-Arctic surface velocity maps of glaciers and ice caps over the Canadian Arctic, Svalbard and the Russian Arctic for at least two times between the 1990s and 2017 using satellite SAR data. Our analyses are mainly performed with offset-tracking of ALOS-1 PALSAR-1 (2007–2011) and Sen...
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ftoslouniv:oai:www.duo.uio.no:10852/62035 2023-05-15T14:27:33+02:00 Circum-arctic changes in the flow of glaciers and ice caps from satellite SAR data between the 1990s and 2017 Strozzi, Tazio Paul, Frank Wiesmann, Andreas Schellenberger, Thomas Kääb, Andreas 2018-01-04T14:12:49Z http://hdl.handle.net/10852/62035 http://urn.nb.no/URN:NBN:no-64631 https://doi.org/10.3390/rs9090947 EN eng MDPI AG http://urn.nb.no/URN:NBN:no-64631 Strozzi, Tazio Paul, Frank Wiesmann, Andreas Schellenberger, Thomas Kääb, Andreas . Circum-arctic changes in the flow of glaciers and ice caps from satellite SAR data between the 1990s and 2017. Remote Sensing. 2017, 9(9) http://hdl.handle.net/10852/62035 1535967 info:ofi/fmt:kev:mtx:ctx&ctx_ver=Z39.88-2004&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.jtitle=Remote Sensing&rft.volume=9&rft.spage=&rft.date=2017 Remote Sensing 9 http://dx.doi.org/10.3390/rs9090947 URN:NBN:no-64631 Fulltext https://www.duo.uio.no/bitstream/handle/10852/62035/2/circumarctic.pdf Attribution 4.0 International https://creativecommons.org/licenses/by/4.0/ CC-BY 2072-4292 Journal article Tidsskriftartikkel Peer reviewed PublishedVersion 2018 ftoslouniv https://doi.org/10.3390/rs9090947 2020-06-21T08:51:40Z We computed circum-Arctic surface velocity maps of glaciers and ice caps over the Canadian Arctic, Svalbard and the Russian Arctic for at least two times between the 1990s and 2017 using satellite SAR data. Our analyses are mainly performed with offset-tracking of ALOS-1 PALSAR-1 (2007–2011) and Sentinel-1 (2015–2017) data. In certain cases JERS-1 SAR (1994–1998), TerraSAR-X (2008–2012), Radarsat-2 (2009–2016) and ALOS-2 PALSAR-2 (2015–2016) data were used to fill-in spatial or temporal gaps. Validation of the latest Sentinel-1 results was accomplished by means of SAR data at higher spatial resolution (Radarsat-2 Wide Ultra Fine) and ground-based measurements. In general, we observe a deceleration of flow velocities for the major tidewater glaciers in the Canadian Arctic and an increase in frontal velocity along with a retreat of frontal positions over Svalbard and the Russian Arctic. However, all regions have strong accelerations for selected glaciers. The latter developments can be well traced based on the very high temporal sampling of Sentinel-1 acquisitions since 2015, revealing new insights in glacier dynamics. For example, surges on Spitsbergen (e.g., Negribreen, Nathorsbreen, Penckbreen and Strongbreen) have a different characteristic and timing than those over Eastern Austfonna and Edgeoya (e.g., Basin 3, Basin 2 and Stonebreen). Events similar to those ongoing on Eastern Austofonna were also observed over the Vavilov Ice Cap on Severnaya Zemlya and possibly Simony Glacier on Franz-Josef Land. Collectively, there seems to be a recently increasing number of glaciers with frontal destabilization over Eastern Svalbard and the Russian Arctic compared to the 1990s. Article in Journal/Newspaper Arctic Arctic Austfonna Franz Josef Land glacier Ice cap Severnaya Zemlya Svalbard Tidewater Spitsbergen Universitet i Oslo: Digitale utgivelser ved UiO (DUO) Arctic Svalbard Franz Josef Land ENVELOPE(55.000,55.000,81.000,81.000) Severnaya Zemlya ENVELOPE(98.000,98.000,79.500,79.500) Austfonna ENVELOPE(24.559,24.559,79.835,79.835) Negribreen ENVELOPE(19.150,19.150,78.564,78.564) Stonebreen ENVELOPE(23.960,23.960,77.724,77.724) Penckbreen ENVELOPE(15.651,15.651,77.464,77.464) Strongbreen ENVELOPE(17.667,17.667,77.533,77.533) Remote Sensing 9 9 947 |
institution |
Open Polar |
collection |
Universitet i Oslo: Digitale utgivelser ved UiO (DUO) |
op_collection_id |
ftoslouniv |
language |
English |
description |
We computed circum-Arctic surface velocity maps of glaciers and ice caps over the Canadian Arctic, Svalbard and the Russian Arctic for at least two times between the 1990s and 2017 using satellite SAR data. Our analyses are mainly performed with offset-tracking of ALOS-1 PALSAR-1 (2007–2011) and Sentinel-1 (2015–2017) data. In certain cases JERS-1 SAR (1994–1998), TerraSAR-X (2008–2012), Radarsat-2 (2009–2016) and ALOS-2 PALSAR-2 (2015–2016) data were used to fill-in spatial or temporal gaps. Validation of the latest Sentinel-1 results was accomplished by means of SAR data at higher spatial resolution (Radarsat-2 Wide Ultra Fine) and ground-based measurements. In general, we observe a deceleration of flow velocities for the major tidewater glaciers in the Canadian Arctic and an increase in frontal velocity along with a retreat of frontal positions over Svalbard and the Russian Arctic. However, all regions have strong accelerations for selected glaciers. The latter developments can be well traced based on the very high temporal sampling of Sentinel-1 acquisitions since 2015, revealing new insights in glacier dynamics. For example, surges on Spitsbergen (e.g., Negribreen, Nathorsbreen, Penckbreen and Strongbreen) have a different characteristic and timing than those over Eastern Austfonna and Edgeoya (e.g., Basin 3, Basin 2 and Stonebreen). Events similar to those ongoing on Eastern Austofonna were also observed over the Vavilov Ice Cap on Severnaya Zemlya and possibly Simony Glacier on Franz-Josef Land. Collectively, there seems to be a recently increasing number of glaciers with frontal destabilization over Eastern Svalbard and the Russian Arctic compared to the 1990s. |
format |
Article in Journal/Newspaper |
author |
Strozzi, Tazio Paul, Frank Wiesmann, Andreas Schellenberger, Thomas Kääb, Andreas |
spellingShingle |
Strozzi, Tazio Paul, Frank Wiesmann, Andreas Schellenberger, Thomas Kääb, Andreas Circum-arctic changes in the flow of glaciers and ice caps from satellite SAR data between the 1990s and 2017 |
author_facet |
Strozzi, Tazio Paul, Frank Wiesmann, Andreas Schellenberger, Thomas Kääb, Andreas |
author_sort |
Strozzi, Tazio |
title |
Circum-arctic changes in the flow of glaciers and ice caps from satellite SAR data between the 1990s and 2017 |
title_short |
Circum-arctic changes in the flow of glaciers and ice caps from satellite SAR data between the 1990s and 2017 |
title_full |
Circum-arctic changes in the flow of glaciers and ice caps from satellite SAR data between the 1990s and 2017 |
title_fullStr |
Circum-arctic changes in the flow of glaciers and ice caps from satellite SAR data between the 1990s and 2017 |
title_full_unstemmed |
Circum-arctic changes in the flow of glaciers and ice caps from satellite SAR data between the 1990s and 2017 |
title_sort |
circum-arctic changes in the flow of glaciers and ice caps from satellite sar data between the 1990s and 2017 |
publisher |
MDPI AG |
publishDate |
2018 |
url |
http://hdl.handle.net/10852/62035 http://urn.nb.no/URN:NBN:no-64631 https://doi.org/10.3390/rs9090947 |
long_lat |
ENVELOPE(55.000,55.000,81.000,81.000) ENVELOPE(98.000,98.000,79.500,79.500) ENVELOPE(24.559,24.559,79.835,79.835) ENVELOPE(19.150,19.150,78.564,78.564) ENVELOPE(23.960,23.960,77.724,77.724) ENVELOPE(15.651,15.651,77.464,77.464) ENVELOPE(17.667,17.667,77.533,77.533) |
geographic |
Arctic Svalbard Franz Josef Land Severnaya Zemlya Austfonna Negribreen Stonebreen Penckbreen Strongbreen |
geographic_facet |
Arctic Svalbard Franz Josef Land Severnaya Zemlya Austfonna Negribreen Stonebreen Penckbreen Strongbreen |
genre |
Arctic Arctic Austfonna Franz Josef Land glacier Ice cap Severnaya Zemlya Svalbard Tidewater Spitsbergen |
genre_facet |
Arctic Arctic Austfonna Franz Josef Land glacier Ice cap Severnaya Zemlya Svalbard Tidewater Spitsbergen |
op_source |
2072-4292 |
op_relation |
http://urn.nb.no/URN:NBN:no-64631 Strozzi, Tazio Paul, Frank Wiesmann, Andreas Schellenberger, Thomas Kääb, Andreas . Circum-arctic changes in the flow of glaciers and ice caps from satellite SAR data between the 1990s and 2017. Remote Sensing. 2017, 9(9) http://hdl.handle.net/10852/62035 1535967 info:ofi/fmt:kev:mtx:ctx&ctx_ver=Z39.88-2004&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.jtitle=Remote Sensing&rft.volume=9&rft.spage=&rft.date=2017 Remote Sensing 9 http://dx.doi.org/10.3390/rs9090947 URN:NBN:no-64631 Fulltext https://www.duo.uio.no/bitstream/handle/10852/62035/2/circumarctic.pdf |
op_rights |
Attribution 4.0 International https://creativecommons.org/licenses/by/4.0/ |
op_rightsnorm |
CC-BY |
op_doi |
https://doi.org/10.3390/rs9090947 |
container_title |
Remote Sensing |
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9 |
container_issue |
9 |
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947 |
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1766301335416733696 |