Identifying mountain permafrost degradation by repeating historical ERT-measurements - supplement
Ongoing global warming affects the degradation of mountainous permafrost. Permafrost thawing impacts landform evolution, reduces fresh water resources, enhances the potential of natural hazards, and thus has significant socio-economic impact. Electrical resistivity tomography (ERT) has been widely u...
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ftzenodo:oai:zenodo.org:7348526 2024-09-15T18:11:22+00:00 Identifying mountain permafrost degradation by repeating historical ERT-measurements - supplement Buckel, Johannes Gardeweg, Rainer 2022-11-03 https://doi.org/10.5281/zenodo.7348526 unknown Zenodo https://doi.org/10.5281/zenodo.7276498 https://doi.org/10.5281/zenodo.7348526 oai:zenodo.org:7348526 info:eu-repo/semantics/openAccess Creative Commons Attribution 4.0 International https://creativecommons.org/licenses/by/4.0/legalcode Permafrost degradation electrical resistivity tomography high mountain geomorphology info:eu-repo/semantics/other 2022 ftzenodo https://doi.org/10.5281/zenodo.734852610.5281/zenodo.7276498 2024-07-26T12:49:03Z Ongoing global warming affects the degradation of mountainous permafrost. Permafrost thawing impacts landform evolution, reduces fresh water resources, enhances the potential of natural hazards, and thus has significant socio-economic impact. Electrical resistivity tomography (ERT) has been widely used to map the ice-containing permafrost by its resistivity contrast compared to the surrounding non-frozen medium. We analyse the temporal changes in the resistivity distribution by comparing historical with recently measured ERT profiles. Three periglacial landforms (two rock glaciers and one talus slope) are surveyed in the Swiss and Austrian Alps by repeating historical field campaigns after periods of 10, 12, and 16 years, respectively. The resistivity values have been significantly reduced concerning ice-poor permafrost at all study sites. Interestingly, resistivity values related to ice-rich permafrost in the studied active rock glacier partly increased during the studied time period. To explain this apparent contradictory (in view of observed increase) observation, geomorphological circumstances, such as the relief and creeping behaviour of the active rock glacier, are discussed. Additional remote sensing data indicates an increased velocity in and around the active part with increased resistivity. The present study highlights alpine permafrost degradation resulting from ever-accelerating global warming. Other/Unknown Material Ice permafrost Zenodo |
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Permafrost degradation electrical resistivity tomography high mountain geomorphology |
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Permafrost degradation electrical resistivity tomography high mountain geomorphology Buckel, Johannes Gardeweg, Rainer Identifying mountain permafrost degradation by repeating historical ERT-measurements - supplement |
topic_facet |
Permafrost degradation electrical resistivity tomography high mountain geomorphology |
description |
Ongoing global warming affects the degradation of mountainous permafrost. Permafrost thawing impacts landform evolution, reduces fresh water resources, enhances the potential of natural hazards, and thus has significant socio-economic impact. Electrical resistivity tomography (ERT) has been widely used to map the ice-containing permafrost by its resistivity contrast compared to the surrounding non-frozen medium. We analyse the temporal changes in the resistivity distribution by comparing historical with recently measured ERT profiles. Three periglacial landforms (two rock glaciers and one talus slope) are surveyed in the Swiss and Austrian Alps by repeating historical field campaigns after periods of 10, 12, and 16 years, respectively. The resistivity values have been significantly reduced concerning ice-poor permafrost at all study sites. Interestingly, resistivity values related to ice-rich permafrost in the studied active rock glacier partly increased during the studied time period. To explain this apparent contradictory (in view of observed increase) observation, geomorphological circumstances, such as the relief and creeping behaviour of the active rock glacier, are discussed. Additional remote sensing data indicates an increased velocity in and around the active part with increased resistivity. The present study highlights alpine permafrost degradation resulting from ever-accelerating global warming. |
format |
Other/Unknown Material |
author |
Buckel, Johannes Gardeweg, Rainer |
author_facet |
Buckel, Johannes Gardeweg, Rainer |
author_sort |
Buckel, Johannes |
title |
Identifying mountain permafrost degradation by repeating historical ERT-measurements - supplement |
title_short |
Identifying mountain permafrost degradation by repeating historical ERT-measurements - supplement |
title_full |
Identifying mountain permafrost degradation by repeating historical ERT-measurements - supplement |
title_fullStr |
Identifying mountain permafrost degradation by repeating historical ERT-measurements - supplement |
title_full_unstemmed |
Identifying mountain permafrost degradation by repeating historical ERT-measurements - supplement |
title_sort |
identifying mountain permafrost degradation by repeating historical ert-measurements - supplement |
publisher |
Zenodo |
publishDate |
2022 |
url |
https://doi.org/10.5281/zenodo.7348526 |
genre |
Ice permafrost |
genre_facet |
Ice permafrost |
op_relation |
https://doi.org/10.5281/zenodo.7276498 https://doi.org/10.5281/zenodo.7348526 oai:zenodo.org:7348526 |
op_rights |
info:eu-repo/semantics/openAccess Creative Commons Attribution 4.0 International https://creativecommons.org/licenses/by/4.0/legalcode |
op_doi |
https://doi.org/10.5281/zenodo.734852610.5281/zenodo.7276498 |
_version_ |
1810448954733625344 |