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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ftmdpi:oai:mdpi.com:/2072-4292/13/13/2505/ 2023-08-20T04:04:18+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 2021-06-26 application/pdf https://doi.org/10.3390/rs13132505 EN eng Multidisciplinary Digital Publishing Institute Remote Sensing in Geology, Geomorphology and Hydrology https://dx.doi.org/10.3390/rs13132505 https://creativecommons.org/licenses/by/4.0/ Remote Sensing; Volume 13; Issue 13; Pages: 2505 DInSAR permafrost subsidence heave precipitation Arctic Text 2021 ftmdpi https://doi.org/10.3390/rs13132505 2023-08-01T02:02:59Z 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. Text Arctic Nunavut permafrost Melville Island MDPI Open Access Publishing Arctic Nunavut Canada Cape Bounty ENVELOPE(-109.542,-109.542,74.863,74.863) Remote Sensing 13 13 2505 |
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Open Polar |
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MDPI Open Access Publishing |
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language |
English |
topic |
DInSAR permafrost subsidence heave precipitation Arctic |
spellingShingle |
DInSAR permafrost subsidence heave precipitation Arctic 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 |
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 |
Text |
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 |
Multidisciplinary Digital Publishing Institute |
publishDate |
2021 |
url |
https://doi.org/10.3390/rs13132505 |
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; Volume 13; Issue 13; Pages: 2505 |
op_relation |
Remote Sensing in Geology, Geomorphology and Hydrology https://dx.doi.org/10.3390/rs13132505 |
op_rights |
https://creativecommons.org/licenses/by/4.0/ |
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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1774714686615322624 |