Monitoring Rock Glacier Kinematics with Satellite Synthetic Aperture Radar
Active rock glaciers represent the best visual expression of mountain permafrost that can be mapped and monitored directly using remotely sensed data. Active rock glaciers are bodies that consist of a perennially frozen ice/rock mixture and express a distinct flow-like morphology indicating downslop...
Published in: | Remote Sensing |
---|---|
Main Authors: | , , , , , , , , |
Format: | Article in Journal/Newspaper |
Language: | English |
Published: |
2021
|
Subjects: | |
Online Access: | http://hdl.handle.net/10852/82245 http://urn.nb.no/URN:NBN:no-85168 https://doi.org/10.3390/rs12030559 |
id |
ftoslouniv:oai:www.duo.uio.no:10852/82245 |
---|---|
record_format |
openpolar |
spelling |
ftoslouniv:oai:www.duo.uio.no:10852/82245 2023-05-15T16:21:23+02:00 Monitoring Rock Glacier Kinematics with Satellite Synthetic Aperture Radar Strozzi, Tazio Caduff, Rafael Jones, Nina Barboux, Chloe Delaloye, Reynald Bodin, Xavier Kääb, Andreas Mätzler, Eva Schrott, Lothar 2021-01-11T10:39:36Z http://hdl.handle.net/10852/82245 http://urn.nb.no/URN:NBN:no-85168 https://doi.org/10.3390/rs12030559 EN eng http://urn.nb.no/URN:NBN:no-85168 Strozzi, Tazio Caduff, Rafael Jones, Nina Barboux, Chloe Delaloye, Reynald Bodin, Xavier Kääb, Andreas Mätzler, Eva Schrott, Lothar . Monitoring Rock Glacier Kinematics with Satellite Synthetic Aperture Radar. Remote Sensing. 2020 http://hdl.handle.net/10852/82245 1868677 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=&rft.spage=&rft.date=2020 Remote Sensing 12 3 https://doi.org/10.3390/rs12030559 URN:NBN:no-85168 Fulltext https://www.duo.uio.no/bitstream/handle/10852/82245/2/remotesensing-12-00559-v2.pdf Attribution 4.0 International https://creativecommons.org/licenses/by/4.0/ CC-BY 2072-4292 Journal article Tidsskriftartikkel Peer reviewed PublishedVersion 2021 ftoslouniv https://doi.org/10.3390/rs12030559 2021-01-20T23:30:59Z Active rock glaciers represent the best visual expression of mountain permafrost that can be mapped and monitored directly using remotely sensed data. Active rock glaciers are bodies that consist of a perennially frozen ice/rock mixture and express a distinct flow-like morphology indicating downslope permafrost creep movement. Annual rates of motion have ranged from a few millimeters to several meters per year, varying within the annual cycle, from year to year, as well as at the decennial time scale. During the last decade, in situ observations in the European Alps have shown that active rock glaciers are responding almost synchronously to inter-annual and decennial changes in ground temperature, suggesting that the relative changes of their kinematics are a general indicator of the evolution of mountain permafrost conditions. Here, we used satellite radar interferometry (InSAR) to monitor the rate of motion of various active rock glaciers in the Swiss Alps, Qeqertarsuaq (Western Greenland), and the semiarid Andes of South America. Velocity time series computed with Sentinel-1 SAR images, regularly acquired since 2014, every six days over Europe and Greenland and every 12 days over the Andes, show annual fluctuations, with higher velocities at the end of the summer. A JERS-1 image pair of 1996 and stacks of very high-resolution SAR images from TerraSAR-X and Cosmo-SkyMed from 2008 to 2017 were analyzed using InSAR and offset tracking over the Western Swiss Alps in order to extend the main observation period of our study. A quantitative assessment of the accuracy of InSAR and offset tracking was performed by comparison with in situ methods. Our results for the three different study regions demonstrate that Sentinel-1 InSAR can complement worldwide in situ measurements of active rock glacier kinematics. Article in Journal/Newspaper glacier Greenland Ice permafrost Qeqertarsuaq Universitet i Oslo: Digitale utgivelser ved UiO (DUO) Greenland Qeqertarsuaq ENVELOPE(-56.867,-56.867,74.400,74.400) Remote Sensing 12 3 559 |
institution |
Open Polar |
collection |
Universitet i Oslo: Digitale utgivelser ved UiO (DUO) |
op_collection_id |
ftoslouniv |
language |
English |
description |
Active rock glaciers represent the best visual expression of mountain permafrost that can be mapped and monitored directly using remotely sensed data. Active rock glaciers are bodies that consist of a perennially frozen ice/rock mixture and express a distinct flow-like morphology indicating downslope permafrost creep movement. Annual rates of motion have ranged from a few millimeters to several meters per year, varying within the annual cycle, from year to year, as well as at the decennial time scale. During the last decade, in situ observations in the European Alps have shown that active rock glaciers are responding almost synchronously to inter-annual and decennial changes in ground temperature, suggesting that the relative changes of their kinematics are a general indicator of the evolution of mountain permafrost conditions. Here, we used satellite radar interferometry (InSAR) to monitor the rate of motion of various active rock glaciers in the Swiss Alps, Qeqertarsuaq (Western Greenland), and the semiarid Andes of South America. Velocity time series computed with Sentinel-1 SAR images, regularly acquired since 2014, every six days over Europe and Greenland and every 12 days over the Andes, show annual fluctuations, with higher velocities at the end of the summer. A JERS-1 image pair of 1996 and stacks of very high-resolution SAR images from TerraSAR-X and Cosmo-SkyMed from 2008 to 2017 were analyzed using InSAR and offset tracking over the Western Swiss Alps in order to extend the main observation period of our study. A quantitative assessment of the accuracy of InSAR and offset tracking was performed by comparison with in situ methods. Our results for the three different study regions demonstrate that Sentinel-1 InSAR can complement worldwide in situ measurements of active rock glacier kinematics. |
format |
Article in Journal/Newspaper |
author |
Strozzi, Tazio Caduff, Rafael Jones, Nina Barboux, Chloe Delaloye, Reynald Bodin, Xavier Kääb, Andreas Mätzler, Eva Schrott, Lothar |
spellingShingle |
Strozzi, Tazio Caduff, Rafael Jones, Nina Barboux, Chloe Delaloye, Reynald Bodin, Xavier Kääb, Andreas Mätzler, Eva Schrott, Lothar Monitoring Rock Glacier Kinematics with Satellite Synthetic Aperture Radar |
author_facet |
Strozzi, Tazio Caduff, Rafael Jones, Nina Barboux, Chloe Delaloye, Reynald Bodin, Xavier Kääb, Andreas Mätzler, Eva Schrott, Lothar |
author_sort |
Strozzi, Tazio |
title |
Monitoring Rock Glacier Kinematics with Satellite Synthetic Aperture Radar |
title_short |
Monitoring Rock Glacier Kinematics with Satellite Synthetic Aperture Radar |
title_full |
Monitoring Rock Glacier Kinematics with Satellite Synthetic Aperture Radar |
title_fullStr |
Monitoring Rock Glacier Kinematics with Satellite Synthetic Aperture Radar |
title_full_unstemmed |
Monitoring Rock Glacier Kinematics with Satellite Synthetic Aperture Radar |
title_sort |
monitoring rock glacier kinematics with satellite synthetic aperture radar |
publishDate |
2021 |
url |
http://hdl.handle.net/10852/82245 http://urn.nb.no/URN:NBN:no-85168 https://doi.org/10.3390/rs12030559 |
long_lat |
ENVELOPE(-56.867,-56.867,74.400,74.400) |
geographic |
Greenland Qeqertarsuaq |
geographic_facet |
Greenland Qeqertarsuaq |
genre |
glacier Greenland Ice permafrost Qeqertarsuaq |
genre_facet |
glacier Greenland Ice permafrost Qeqertarsuaq |
op_source |
2072-4292 |
op_relation |
http://urn.nb.no/URN:NBN:no-85168 Strozzi, Tazio Caduff, Rafael Jones, Nina Barboux, Chloe Delaloye, Reynald Bodin, Xavier Kääb, Andreas Mätzler, Eva Schrott, Lothar . Monitoring Rock Glacier Kinematics with Satellite Synthetic Aperture Radar. Remote Sensing. 2020 http://hdl.handle.net/10852/82245 1868677 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=&rft.spage=&rft.date=2020 Remote Sensing 12 3 https://doi.org/10.3390/rs12030559 URN:NBN:no-85168 Fulltext https://www.duo.uio.no/bitstream/handle/10852/82245/2/remotesensing-12-00559-v2.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/rs12030559 |
container_title |
Remote Sensing |
container_volume |
12 |
container_issue |
3 |
container_start_page |
559 |
_version_ |
1766009384121401344 |