Flow Velocity Variations and Surface Change of the Destabilised Plator Rock Glacier (Central Italian Alps) from Aerial Surveys
Flow velocities were measured on the Plator rock glacier in the Central Italian Alps using a correlation image analysis algorithm on orthophotos acquired by drones between the years 2016 and 2020. The spatial patterns of surface creep were then compared to the Bulk Creep Factor (BCF) spatial variabi...
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ftmdpi:oai:mdpi.com:/2072-4292/14/3/635/ 2023-08-20T04:09:14+02:00 Flow Velocity Variations and Surface Change of the Destabilised Plator Rock Glacier (Central Italian Alps) from Aerial Surveys Francesca Bearzot Roberto Garzonio Roberto Colombo Giovanni Battista Crosta Biagio Di Mauro Matteo Fioletti Umberto Morra Di Cella Micol Rossini agris 2022-01-28 application/pdf https://doi.org/10.3390/rs14030635 EN eng Multidisciplinary Digital Publishing Institute Remote Sensing in Geology, Geomorphology and Hydrology https://dx.doi.org/10.3390/rs14030635 https://creativecommons.org/licenses/by/4.0/ Remote Sensing; Volume 14; Issue 3; Pages: 635 Italian Alps rock glacier creep permafrost morphology Bulk Creep Factor BCF Text 2022 ftmdpi https://doi.org/10.3390/rs14030635 2023-08-01T03:59:42Z Flow velocities were measured on the Plator rock glacier in the Central Italian Alps using a correlation image analysis algorithm on orthophotos acquired by drones between the years 2016 and 2020. The spatial patterns of surface creep were then compared to the Bulk Creep Factor (BCF) spatial variability to interpret the rock glacier dynamics as a function of material properties and geometry. The rock glacier showed different creep rates in the rooting zone (0.40–0.90 m/y) and in the frontal zone (>4.0 m/y). Close to the rock glacier front, the BCF assumed the highest values, reaching values typical of rock glaciers experiencing destabilisation. Conversely, in the rooting zone the small rates corresponded to lowest BCFs, about five times smaller than in the frontal zone. The Plator rock glacier revealed a substantial advancement from 1981 to 2020 and distinct geomorphological features typical of rock glaciers exhibiting destabilising processes. Given the fast-moving phase, the advancement of both the front line and the front toe of the rock glacier, and the contrasting spatial distribution in the BCFs, the Plator could be considered a destabilised rock glacier. Text permafrost MDPI Open Access Publishing Remote Sensing 14 3 635 |
institution |
Open Polar |
collection |
MDPI Open Access Publishing |
op_collection_id |
ftmdpi |
language |
English |
topic |
Italian Alps rock glacier creep permafrost morphology Bulk Creep Factor BCF |
spellingShingle |
Italian Alps rock glacier creep permafrost morphology Bulk Creep Factor BCF Francesca Bearzot Roberto Garzonio Roberto Colombo Giovanni Battista Crosta Biagio Di Mauro Matteo Fioletti Umberto Morra Di Cella Micol Rossini Flow Velocity Variations and Surface Change of the Destabilised Plator Rock Glacier (Central Italian Alps) from Aerial Surveys |
topic_facet |
Italian Alps rock glacier creep permafrost morphology Bulk Creep Factor BCF |
description |
Flow velocities were measured on the Plator rock glacier in the Central Italian Alps using a correlation image analysis algorithm on orthophotos acquired by drones between the years 2016 and 2020. The spatial patterns of surface creep were then compared to the Bulk Creep Factor (BCF) spatial variability to interpret the rock glacier dynamics as a function of material properties and geometry. The rock glacier showed different creep rates in the rooting zone (0.40–0.90 m/y) and in the frontal zone (>4.0 m/y). Close to the rock glacier front, the BCF assumed the highest values, reaching values typical of rock glaciers experiencing destabilisation. Conversely, in the rooting zone the small rates corresponded to lowest BCFs, about five times smaller than in the frontal zone. The Plator rock glacier revealed a substantial advancement from 1981 to 2020 and distinct geomorphological features typical of rock glaciers exhibiting destabilising processes. Given the fast-moving phase, the advancement of both the front line and the front toe of the rock glacier, and the contrasting spatial distribution in the BCFs, the Plator could be considered a destabilised rock glacier. |
format |
Text |
author |
Francesca Bearzot Roberto Garzonio Roberto Colombo Giovanni Battista Crosta Biagio Di Mauro Matteo Fioletti Umberto Morra Di Cella Micol Rossini |
author_facet |
Francesca Bearzot Roberto Garzonio Roberto Colombo Giovanni Battista Crosta Biagio Di Mauro Matteo Fioletti Umberto Morra Di Cella Micol Rossini |
author_sort |
Francesca Bearzot |
title |
Flow Velocity Variations and Surface Change of the Destabilised Plator Rock Glacier (Central Italian Alps) from Aerial Surveys |
title_short |
Flow Velocity Variations and Surface Change of the Destabilised Plator Rock Glacier (Central Italian Alps) from Aerial Surveys |
title_full |
Flow Velocity Variations and Surface Change of the Destabilised Plator Rock Glacier (Central Italian Alps) from Aerial Surveys |
title_fullStr |
Flow Velocity Variations and Surface Change of the Destabilised Plator Rock Glacier (Central Italian Alps) from Aerial Surveys |
title_full_unstemmed |
Flow Velocity Variations and Surface Change of the Destabilised Plator Rock Glacier (Central Italian Alps) from Aerial Surveys |
title_sort |
flow velocity variations and surface change of the destabilised plator rock glacier (central italian alps) from aerial surveys |
publisher |
Multidisciplinary Digital Publishing Institute |
publishDate |
2022 |
url |
https://doi.org/10.3390/rs14030635 |
op_coverage |
agris |
genre |
permafrost |
genre_facet |
permafrost |
op_source |
Remote Sensing; Volume 14; Issue 3; Pages: 635 |
op_relation |
Remote Sensing in Geology, Geomorphology and Hydrology https://dx.doi.org/10.3390/rs14030635 |
op_rights |
https://creativecommons.org/licenses/by/4.0/ |
op_doi |
https://doi.org/10.3390/rs14030635 |
container_title |
Remote Sensing |
container_volume |
14 |
container_issue |
3 |
container_start_page |
635 |
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1774722039834214400 |