Spectral induced polarization imaging to investigate an ice-rich mountain permafrost site in Switzerland
Spectral induced polarization (SIP) measurements were collected at the Lapires talus slope, a long-term permafrost monitoring site located in the western Swiss Alps, to assess the potential of the frequency dependence (within the frequency range of 0.1–225 Hz) of the electrical polarization response...
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Copernicus Publications
2022
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Online Access: | https://doi.org/10.5194/tc-16-1903-2022 https://tc.copernicus.org/articles/16/1903/2022/tc-16-1903-2022.pdf https://doaj.org/article/591134e4bb9b4d418cf46246388937f8 |
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fttriple:oai:gotriple.eu:oai:doaj.org/article:591134e4bb9b4d418cf46246388937f8 2023-05-15T16:36:40+02:00 Spectral induced polarization imaging to investigate an ice-rich mountain permafrost site in Switzerland T. Maierhofer C. Hauck C. Hilbich A. Kemna A. Flores-Orozco 2022-05-01 https://doi.org/10.5194/tc-16-1903-2022 https://tc.copernicus.org/articles/16/1903/2022/tc-16-1903-2022.pdf https://doaj.org/article/591134e4bb9b4d418cf46246388937f8 en eng Copernicus Publications doi:10.5194/tc-16-1903-2022 1994-0416 1994-0424 https://tc.copernicus.org/articles/16/1903/2022/tc-16-1903-2022.pdf https://doaj.org/article/591134e4bb9b4d418cf46246388937f8 undefined The Cryosphere, Vol 16, Pp 1903-1925 (2022) geo envir Journal Article https://vocabularies.coar-repositories.org/resource_types/c_6501/ 2022 fttriple https://doi.org/10.5194/tc-16-1903-2022 2023-01-22T17:50:39Z Spectral induced polarization (SIP) measurements were collected at the Lapires talus slope, a long-term permafrost monitoring site located in the western Swiss Alps, to assess the potential of the frequency dependence (within the frequency range of 0.1–225 Hz) of the electrical polarization response of frozen rocks for an improved permafrost characterization. The aim of our investigation was to (a) find a field protocol that provides SIP imaging data sets less affected by electromagnetic coupling and easy to deploy in rough terrains, (b) cover the spatial extent of the local permafrost distribution, and (c) evaluate the potential of the spectral data to discriminate between different substrates and spatial variations in the volumetric ice content within the talus slope. To qualitatively assess data uncertainty, we analyse the misfit between normal and reciprocal (N&R) measurements collected for all profiles and frequencies. A comparison between different cable setups reveals the lowest N&R misfits for coaxial cables and the possibility of collecting high-quality SIP data in the range between 0.1–75 Hz. We observe an overall smaller spatial extent of the ice-rich permafrost body compared to its assumed distribution from previous studies. Our results further suggest that SIP data help to improve the discrimination between ice-rich permafrost and unfrozen bedrock in ambiguous cases based on their characteristic spectral behaviour, with ice-rich areas showing a stronger polarization towards higher frequencies in agreement with the well-known spectral response of ice. Article in Journal/Newspaper Ice permafrost The Cryosphere Unknown The Cryosphere 16 5 1903 1925 |
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English |
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geo envir T. Maierhofer C. Hauck C. Hilbich A. Kemna A. Flores-Orozco Spectral induced polarization imaging to investigate an ice-rich mountain permafrost site in Switzerland |
topic_facet |
geo envir |
description |
Spectral induced polarization (SIP) measurements were collected at the Lapires talus slope, a long-term permafrost monitoring site located in the western Swiss Alps, to assess the potential of the frequency dependence (within the frequency range of 0.1–225 Hz) of the electrical polarization response of frozen rocks for an improved permafrost characterization. The aim of our investigation was to (a) find a field protocol that provides SIP imaging data sets less affected by electromagnetic coupling and easy to deploy in rough terrains, (b) cover the spatial extent of the local permafrost distribution, and (c) evaluate the potential of the spectral data to discriminate between different substrates and spatial variations in the volumetric ice content within the talus slope. To qualitatively assess data uncertainty, we analyse the misfit between normal and reciprocal (N&R) measurements collected for all profiles and frequencies. A comparison between different cable setups reveals the lowest N&R misfits for coaxial cables and the possibility of collecting high-quality SIP data in the range between 0.1–75 Hz. We observe an overall smaller spatial extent of the ice-rich permafrost body compared to its assumed distribution from previous studies. Our results further suggest that SIP data help to improve the discrimination between ice-rich permafrost and unfrozen bedrock in ambiguous cases based on their characteristic spectral behaviour, with ice-rich areas showing a stronger polarization towards higher frequencies in agreement with the well-known spectral response of ice. |
format |
Article in Journal/Newspaper |
author |
T. Maierhofer C. Hauck C. Hilbich A. Kemna A. Flores-Orozco |
author_facet |
T. Maierhofer C. Hauck C. Hilbich A. Kemna A. Flores-Orozco |
author_sort |
T. Maierhofer |
title |
Spectral induced polarization imaging to investigate an ice-rich mountain permafrost site in Switzerland |
title_short |
Spectral induced polarization imaging to investigate an ice-rich mountain permafrost site in Switzerland |
title_full |
Spectral induced polarization imaging to investigate an ice-rich mountain permafrost site in Switzerland |
title_fullStr |
Spectral induced polarization imaging to investigate an ice-rich mountain permafrost site in Switzerland |
title_full_unstemmed |
Spectral induced polarization imaging to investigate an ice-rich mountain permafrost site in Switzerland |
title_sort |
spectral induced polarization imaging to investigate an ice-rich mountain permafrost site in switzerland |
publisher |
Copernicus Publications |
publishDate |
2022 |
url |
https://doi.org/10.5194/tc-16-1903-2022 https://tc.copernicus.org/articles/16/1903/2022/tc-16-1903-2022.pdf https://doaj.org/article/591134e4bb9b4d418cf46246388937f8 |
genre |
Ice permafrost The Cryosphere |
genre_facet |
Ice permafrost The Cryosphere |
op_source |
The Cryosphere, Vol 16, Pp 1903-1925 (2022) |
op_relation |
doi:10.5194/tc-16-1903-2022 1994-0416 1994-0424 https://tc.copernicus.org/articles/16/1903/2022/tc-16-1903-2022.pdf https://doaj.org/article/591134e4bb9b4d418cf46246388937f8 |
op_rights |
undefined |
op_doi |
https://doi.org/10.5194/tc-16-1903-2022 |
container_title |
The Cryosphere |
container_volume |
16 |
container_issue |
5 |
container_start_page |
1903 |
op_container_end_page |
1925 |
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1766026996749434880 |