Seasonal Surface Subsidence and Frost Heave Detected by C-Band DInSAR in a High Arctic Environment, Cape Bounty, Melville Island, Nunavut, Canada
Differential interferometry of synthetic aperture radar (DInSAR) can be used to generate high-precision surface displacement maps in continuous permafrost environments, capturing isotropic surface subsidence and uplift associated with the seasonal freeze and thaw cycle. We generated seasonal displac...
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ftdoajarticles:oai:doaj.org/article:c13427d5e22e4865a2d666d9be56ac09 2023-05-15T14:57:41+02:00 Seasonal Surface Subsidence and Frost Heave Detected by C-Band DInSAR in a High Arctic Environment, Cape Bounty, Melville Island, Nunavut, Canada Greg Robson Paul Treitz Scott F. Lamoureux Kevin Murnaghan Brian Brisco 2021-06-01T00:00:00Z https://doi.org/10.3390/rs13132505 https://doaj.org/article/c13427d5e22e4865a2d666d9be56ac09 EN eng MDPI AG https://www.mdpi.com/2072-4292/13/13/2505 https://doaj.org/toc/2072-4292 doi:10.3390/rs13132505 2072-4292 https://doaj.org/article/c13427d5e22e4865a2d666d9be56ac09 Remote Sensing, Vol 13, Iss 2505, p 2505 (2021) DInSAR permafrost subsidence heave precipitation Arctic Science Q article 2021 ftdoajarticles https://doi.org/10.3390/rs13132505 2022-12-31T04:02:34Z Differential interferometry of synthetic aperture radar (DInSAR) can be used to generate high-precision surface displacement maps in continuous permafrost environments, capturing isotropic surface subsidence and uplift associated with the seasonal freeze and thaw cycle. We generated seasonal displacement maps using DInSAR with ultrafine-beam Radarsat-2 data for the summers of 2013, 2015, and 2019 at Cape Bounty, Melville Island, and examined them in combination with a land-cover classification, meteorological data, topographic data, optical satellite imagery, and in situ measures of soil moisture, soil temperature, and depth to the frost table. Over the three years studied, displacement magnitudes (estimated uncertainty ± 1 cm) of up to 10 cm per 48-day DInSAR stack were detected. However, generally, the displacement was far smaller (up to 4 cm). Surface displacement was found to be most extensive and of the greatest magnitude in low-lying, wet, and steeply sloping areas. The few areas where large vertical displacements (>2.5 cm) were detected in multiple years were clustered in wet, low lying areas, on steep slopes or ridges, or close to the coast. DInSAR also captured the expansion of two medium-sized retrogressive thaw slumps (RTS), exhibiting widespread negative surface change in the slump floor. Article in Journal/Newspaper Arctic Nunavut permafrost Melville Island Directory of Open Access Journals: DOAJ Articles Arctic Nunavut Canada Cape Bounty ENVELOPE(-109.542,-109.542,74.863,74.863) Remote Sensing 13 13 2505 |
institution |
Open Polar |
collection |
Directory of Open Access Journals: DOAJ Articles |
op_collection_id |
ftdoajarticles |
language |
English |
topic |
DInSAR permafrost subsidence heave precipitation Arctic Science Q |
spellingShingle |
DInSAR permafrost subsidence heave precipitation Arctic Science Q Greg Robson Paul Treitz Scott F. Lamoureux Kevin Murnaghan Brian Brisco Seasonal Surface Subsidence and Frost Heave Detected by C-Band DInSAR in a High Arctic Environment, Cape Bounty, Melville Island, Nunavut, Canada |
topic_facet |
DInSAR permafrost subsidence heave precipitation Arctic Science Q |
description |
Differential interferometry of synthetic aperture radar (DInSAR) can be used to generate high-precision surface displacement maps in continuous permafrost environments, capturing isotropic surface subsidence and uplift associated with the seasonal freeze and thaw cycle. We generated seasonal displacement maps using DInSAR with ultrafine-beam Radarsat-2 data for the summers of 2013, 2015, and 2019 at Cape Bounty, Melville Island, and examined them in combination with a land-cover classification, meteorological data, topographic data, optical satellite imagery, and in situ measures of soil moisture, soil temperature, and depth to the frost table. Over the three years studied, displacement magnitudes (estimated uncertainty ± 1 cm) of up to 10 cm per 48-day DInSAR stack were detected. However, generally, the displacement was far smaller (up to 4 cm). Surface displacement was found to be most extensive and of the greatest magnitude in low-lying, wet, and steeply sloping areas. The few areas where large vertical displacements (>2.5 cm) were detected in multiple years were clustered in wet, low lying areas, on steep slopes or ridges, or close to the coast. DInSAR also captured the expansion of two medium-sized retrogressive thaw slumps (RTS), exhibiting widespread negative surface change in the slump floor. |
format |
Article in Journal/Newspaper |
author |
Greg Robson Paul Treitz Scott F. Lamoureux Kevin Murnaghan Brian Brisco |
author_facet |
Greg Robson Paul Treitz Scott F. Lamoureux Kevin Murnaghan Brian Brisco |
author_sort |
Greg Robson |
title |
Seasonal Surface Subsidence and Frost Heave Detected by C-Band DInSAR in a High Arctic Environment, Cape Bounty, Melville Island, Nunavut, Canada |
title_short |
Seasonal Surface Subsidence and Frost Heave Detected by C-Band DInSAR in a High Arctic Environment, Cape Bounty, Melville Island, Nunavut, Canada |
title_full |
Seasonal Surface Subsidence and Frost Heave Detected by C-Band DInSAR in a High Arctic Environment, Cape Bounty, Melville Island, Nunavut, Canada |
title_fullStr |
Seasonal Surface Subsidence and Frost Heave Detected by C-Band DInSAR in a High Arctic Environment, Cape Bounty, Melville Island, Nunavut, Canada |
title_full_unstemmed |
Seasonal Surface Subsidence and Frost Heave Detected by C-Band DInSAR in a High Arctic Environment, Cape Bounty, Melville Island, Nunavut, Canada |
title_sort |
seasonal surface subsidence and frost heave detected by c-band dinsar in a high arctic environment, cape bounty, melville island, nunavut, canada |
publisher |
MDPI AG |
publishDate |
2021 |
url |
https://doi.org/10.3390/rs13132505 https://doaj.org/article/c13427d5e22e4865a2d666d9be56ac09 |
long_lat |
ENVELOPE(-109.542,-109.542,74.863,74.863) |
geographic |
Arctic Nunavut Canada Cape Bounty |
geographic_facet |
Arctic Nunavut Canada Cape Bounty |
genre |
Arctic Nunavut permafrost Melville Island |
genre_facet |
Arctic Nunavut permafrost Melville Island |
op_source |
Remote Sensing, Vol 13, Iss 2505, p 2505 (2021) |
op_relation |
https://www.mdpi.com/2072-4292/13/13/2505 https://doaj.org/toc/2072-4292 doi:10.3390/rs13132505 2072-4292 https://doaj.org/article/c13427d5e22e4865a2d666d9be56ac09 |
op_doi |
https://doi.org/10.3390/rs13132505 |
container_title |
Remote Sensing |
container_volume |
13 |
container_issue |
13 |
container_start_page |
2505 |
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1766329820743991296 |