A Comparison of Frequency Domain Electro-Magnetometry, Electrical Resistivity Tomography and Borehole Temperatures to Assess the Presence of Ice in a Rock Glacier
Alpine permafrost is currently warming, leading to changes such as active layer deepening and talik formation. Frequency domain electro-magnetometry (FDEM) measurements were tested as a simple and efficient method to investigate ground characteristics along two transects on the ice-rich Schafberg ro...
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Online Access: | http://hdl.handle.net/11577/3369316 https://doi.org/10.3389/feart.2020.586430 |
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ftunivpadovairis:oai:www.research.unipd.it:11577/3369316 2024-04-21T07:43:34+00:00 A Comparison of Frequency Domain Electro-Magnetometry, Electrical Resistivity Tomography and Borehole Temperatures to Assess the Presence of Ice in a Rock Glacier Boaga J. Phillips M. Noetzli J. Haberkorn A. Kenner R. Bast A. Boaga, J. Phillips, M. Noetzli, J. Haberkorn, A. Kenner, R. Bast, A. 2020 http://hdl.handle.net/11577/3369316 https://doi.org/10.3389/feart.2020.586430 eng eng Frontiers Media S.A. info:eu-repo/semantics/altIdentifier/wos/WOS:000604599800001 volume:8 journal:FRONTIERS IN EARTH SCIENCE http://hdl.handle.net/11577/3369316 doi:10.3389/feart.2020.586430 info:eu-repo/semantics/altIdentifier/scopus/2-s2.0-85098985789 active layer frequency electro-magnetometer ground ice permafrost talik info:eu-repo/semantics/article 2020 ftunivpadovairis https://doi.org/10.3389/feart.2020.586430 2024-03-28T02:09:24Z Alpine permafrost is currently warming, leading to changes such as active layer deepening and talik formation. Frequency domain electro-magnetometry (FDEM) measurements were tested as a simple and efficient method to investigate ground characteristics along two transects on the ice-rich Schafberg rock glacier in the Eastern Swiss Alps. The results were compared with electrical resistivity tomography (ERT) and ground temperature data acquired simultaneously in boreholes. FDEM provides information on the electrical properties of the ground, allowing to investigate ground-ice distribution. Our device allowed measurements to a depth of around 7 m. In ice-rich permafrost, FDEM can provide an approximation of the active layer thickness, and ice-free zones within the permafrost such as intra-permafrost taliks can be identified. This rapidly applicable geophysical method can be used to monitor ground ice distribution easily and efficiently, making it an ideal complement to borehole temperature data, which only provide point information and are costly to install and maintain. At the Schafberg site the three methods FDEM, electrical resistivity tomography and borehole temperature measurements provided similar results, with regard to active layer thickness and the presence of unfrozen zones within the ice-rich permafrost. Article in Journal/Newspaper Active layer thickness Ice permafrost Talik Padua Research Archive (IRIS - Università degli Studi di Padova) Frontiers in Earth Science 8 |
institution |
Open Polar |
collection |
Padua Research Archive (IRIS - Università degli Studi di Padova) |
op_collection_id |
ftunivpadovairis |
language |
English |
topic |
active layer frequency electro-magnetometer ground ice permafrost talik |
spellingShingle |
active layer frequency electro-magnetometer ground ice permafrost talik Boaga J. Phillips M. Noetzli J. Haberkorn A. Kenner R. Bast A. A Comparison of Frequency Domain Electro-Magnetometry, Electrical Resistivity Tomography and Borehole Temperatures to Assess the Presence of Ice in a Rock Glacier |
topic_facet |
active layer frequency electro-magnetometer ground ice permafrost talik |
description |
Alpine permafrost is currently warming, leading to changes such as active layer deepening and talik formation. Frequency domain electro-magnetometry (FDEM) measurements were tested as a simple and efficient method to investigate ground characteristics along two transects on the ice-rich Schafberg rock glacier in the Eastern Swiss Alps. The results were compared with electrical resistivity tomography (ERT) and ground temperature data acquired simultaneously in boreholes. FDEM provides information on the electrical properties of the ground, allowing to investigate ground-ice distribution. Our device allowed measurements to a depth of around 7 m. In ice-rich permafrost, FDEM can provide an approximation of the active layer thickness, and ice-free zones within the permafrost such as intra-permafrost taliks can be identified. This rapidly applicable geophysical method can be used to monitor ground ice distribution easily and efficiently, making it an ideal complement to borehole temperature data, which only provide point information and are costly to install and maintain. At the Schafberg site the three methods FDEM, electrical resistivity tomography and borehole temperature measurements provided similar results, with regard to active layer thickness and the presence of unfrozen zones within the ice-rich permafrost. |
author2 |
Boaga, J. Phillips, M. Noetzli, J. Haberkorn, A. Kenner, R. Bast, A. |
format |
Article in Journal/Newspaper |
author |
Boaga J. Phillips M. Noetzli J. Haberkorn A. Kenner R. Bast A. |
author_facet |
Boaga J. Phillips M. Noetzli J. Haberkorn A. Kenner R. Bast A. |
author_sort |
Boaga J. |
title |
A Comparison of Frequency Domain Electro-Magnetometry, Electrical Resistivity Tomography and Borehole Temperatures to Assess the Presence of Ice in a Rock Glacier |
title_short |
A Comparison of Frequency Domain Electro-Magnetometry, Electrical Resistivity Tomography and Borehole Temperatures to Assess the Presence of Ice in a Rock Glacier |
title_full |
A Comparison of Frequency Domain Electro-Magnetometry, Electrical Resistivity Tomography and Borehole Temperatures to Assess the Presence of Ice in a Rock Glacier |
title_fullStr |
A Comparison of Frequency Domain Electro-Magnetometry, Electrical Resistivity Tomography and Borehole Temperatures to Assess the Presence of Ice in a Rock Glacier |
title_full_unstemmed |
A Comparison of Frequency Domain Electro-Magnetometry, Electrical Resistivity Tomography and Borehole Temperatures to Assess the Presence of Ice in a Rock Glacier |
title_sort |
comparison of frequency domain electro-magnetometry, electrical resistivity tomography and borehole temperatures to assess the presence of ice in a rock glacier |
publisher |
Frontiers Media S.A. |
publishDate |
2020 |
url |
http://hdl.handle.net/11577/3369316 https://doi.org/10.3389/feart.2020.586430 |
genre |
Active layer thickness Ice permafrost Talik |
genre_facet |
Active layer thickness Ice permafrost Talik |
op_relation |
info:eu-repo/semantics/altIdentifier/wos/WOS:000604599800001 volume:8 journal:FRONTIERS IN EARTH SCIENCE http://hdl.handle.net/11577/3369316 doi:10.3389/feart.2020.586430 info:eu-repo/semantics/altIdentifier/scopus/2-s2.0-85098985789 |
op_doi |
https://doi.org/10.3389/feart.2020.586430 |
container_title |
Frontiers in Earth Science |
container_volume |
8 |
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1796948752448094208 |