Sentinel-1 SAR Interferometry for Surface Deformation Monitoring in Low-Land Permafrost Areas
Low-land permafrost areas are subject to intense freeze-thaw cycles and characterized by remarkable surface displacement. We used Sentinel-1 SAR interferometry (InSAR) in order to analyse the summer surface displacement over four spots in the Arctic and Antarctica since 2015. Choosing floodplain or...
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ftmdpi:oai:mdpi.com:/2072-4292/10/9/1360/ 2023-08-20T04:01:23+02:00 Sentinel-1 SAR Interferometry for Surface Deformation Monitoring in Low-Land Permafrost Areas Tazio Strozzi Sofia Antonova Frank Günther Eva Mätzler Gonçalo Vieira Urs Wegmüller Sebastian Westermann Annett Bartsch agris 2018-08-27 application/pdf https://doi.org/10.3390/rs10091360 EN eng Multidisciplinary Digital Publishing Institute Remote Sensing in Geology, Geomorphology and Hydrology https://dx.doi.org/10.3390/rs10091360 https://creativecommons.org/licenses/by/4.0/ Remote Sensing; Volume 10; Issue 9; Pages: 1360 permafrost Arctic Antarctica subsidence InSAR Sentinel-1 Text 2018 ftmdpi https://doi.org/10.3390/rs10091360 2023-07-31T21:41:52Z Low-land permafrost areas are subject to intense freeze-thaw cycles and characterized by remarkable surface displacement. We used Sentinel-1 SAR interferometry (InSAR) in order to analyse the summer surface displacement over four spots in the Arctic and Antarctica since 2015. Choosing floodplain or outcrop areas as the reference for the InSAR relative deformation measurements, we found maximum subsidence of about 3 to 10 cm during the thawing season with generally high spatial variability. Sentinel-1 time-series of interferograms with 6–12 day time intervals highlight that subsidence is often occurring rather quickly within roughly one month in early summer. Intercomparison of summer subsidence from Sentinel-1 in 2017 with TerraSAR-X in 2013 over part of the Lena River Delta (Russia) shows a high spatial agreement between both SAR systems. A comparison with in-situ measurements for the summer of 2014 over the Lena River Delta indicates a pronounced downward movement of several centimetres in both cases but does not reveal a spatial correspondence between InSAR and local in-situ measurements. For the reconstruction of longer time-series of deformation, yearly Sentinel-1 interferograms from the end of the summer were considered. However, in order to infer an effective subsidence of the surface through melting of excess ice layers over multi-annual scales with Sentinel-1, a longer observation time period is necessary. Text Antarc* Antarctica Arctic Ice lena river permafrost MDPI Open Access Publishing Arctic Remote Sensing 10 9 1360 |
institution |
Open Polar |
collection |
MDPI Open Access Publishing |
op_collection_id |
ftmdpi |
language |
English |
topic |
permafrost Arctic Antarctica subsidence InSAR Sentinel-1 |
spellingShingle |
permafrost Arctic Antarctica subsidence InSAR Sentinel-1 Tazio Strozzi Sofia Antonova Frank Günther Eva Mätzler Gonçalo Vieira Urs Wegmüller Sebastian Westermann Annett Bartsch Sentinel-1 SAR Interferometry for Surface Deformation Monitoring in Low-Land Permafrost Areas |
topic_facet |
permafrost Arctic Antarctica subsidence InSAR Sentinel-1 |
description |
Low-land permafrost areas are subject to intense freeze-thaw cycles and characterized by remarkable surface displacement. We used Sentinel-1 SAR interferometry (InSAR) in order to analyse the summer surface displacement over four spots in the Arctic and Antarctica since 2015. Choosing floodplain or outcrop areas as the reference for the InSAR relative deformation measurements, we found maximum subsidence of about 3 to 10 cm during the thawing season with generally high spatial variability. Sentinel-1 time-series of interferograms with 6–12 day time intervals highlight that subsidence is often occurring rather quickly within roughly one month in early summer. Intercomparison of summer subsidence from Sentinel-1 in 2017 with TerraSAR-X in 2013 over part of the Lena River Delta (Russia) shows a high spatial agreement between both SAR systems. A comparison with in-situ measurements for the summer of 2014 over the Lena River Delta indicates a pronounced downward movement of several centimetres in both cases but does not reveal a spatial correspondence between InSAR and local in-situ measurements. For the reconstruction of longer time-series of deformation, yearly Sentinel-1 interferograms from the end of the summer were considered. However, in order to infer an effective subsidence of the surface through melting of excess ice layers over multi-annual scales with Sentinel-1, a longer observation time period is necessary. |
format |
Text |
author |
Tazio Strozzi Sofia Antonova Frank Günther Eva Mätzler Gonçalo Vieira Urs Wegmüller Sebastian Westermann Annett Bartsch |
author_facet |
Tazio Strozzi Sofia Antonova Frank Günther Eva Mätzler Gonçalo Vieira Urs Wegmüller Sebastian Westermann Annett Bartsch |
author_sort |
Tazio Strozzi |
title |
Sentinel-1 SAR Interferometry for Surface Deformation Monitoring in Low-Land Permafrost Areas |
title_short |
Sentinel-1 SAR Interferometry for Surface Deformation Monitoring in Low-Land Permafrost Areas |
title_full |
Sentinel-1 SAR Interferometry for Surface Deformation Monitoring in Low-Land Permafrost Areas |
title_fullStr |
Sentinel-1 SAR Interferometry for Surface Deformation Monitoring in Low-Land Permafrost Areas |
title_full_unstemmed |
Sentinel-1 SAR Interferometry for Surface Deformation Monitoring in Low-Land Permafrost Areas |
title_sort |
sentinel-1 sar interferometry for surface deformation monitoring in low-land permafrost areas |
publisher |
Multidisciplinary Digital Publishing Institute |
publishDate |
2018 |
url |
https://doi.org/10.3390/rs10091360 |
op_coverage |
agris |
geographic |
Arctic |
geographic_facet |
Arctic |
genre |
Antarc* Antarctica Arctic Ice lena river permafrost |
genre_facet |
Antarc* Antarctica Arctic Ice lena river permafrost |
op_source |
Remote Sensing; Volume 10; Issue 9; Pages: 1360 |
op_relation |
Remote Sensing in Geology, Geomorphology and Hydrology https://dx.doi.org/10.3390/rs10091360 |
op_rights |
https://creativecommons.org/licenses/by/4.0/ |
op_doi |
https://doi.org/10.3390/rs10091360 |
container_title |
Remote Sensing |
container_volume |
10 |
container_issue |
9 |
container_start_page |
1360 |
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1774724665296551936 |