Coupled thermo–geophysical inversion for permafrost monitoring
This study explores an alternative way of deriving soil thermal properties from surface geophysical measurements. We combined ground surface temperature time series with time lapse geoelectrical acquisitions measured from the ground surface in a fully coupled inversion scheme to calibrate a heat con...
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2024
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ftdoajarticles:oai:doaj.org/article:50f234735aca49ce9d6433b53ae24482 2024-02-11T10:07:53+01:00 Coupled thermo–geophysical inversion for permafrost monitoring S. Tomaškovičová T. Ingeman-Nielsen 2024-01-01T00:00:00Z https://doi.org/10.5194/tc-18-321-2024 https://doaj.org/article/50f234735aca49ce9d6433b53ae24482 EN eng Copernicus Publications https://tc.copernicus.org/articles/18/321/2024/tc-18-321-2024.pdf https://doaj.org/toc/1994-0416 https://doaj.org/toc/1994-0424 doi:10.5194/tc-18-321-2024 1994-0416 1994-0424 https://doaj.org/article/50f234735aca49ce9d6433b53ae24482 The Cryosphere, Vol 18, Pp 321-340 (2024) Environmental sciences GE1-350 Geology QE1-996.5 article 2024 ftdoajarticles https://doi.org/10.5194/tc-18-321-2024 2024-01-21T01:40:30Z This study explores an alternative way of deriving soil thermal properties from surface geophysical measurements. We combined ground surface temperature time series with time lapse geoelectrical acquisitions measured from the ground surface in a fully coupled inversion scheme to calibrate a heat conduction model. The quantitative link between the thermal and geoelectrical parts of the modeling framework is the temperature-dependent unfrozen water content, which is also the main factor influencing electrical response of the ground. The apparent resistivity data were incorporated into the coupled framework without being inverted separately, thus reducing the uncertainty inevitably associated with inverted resistivity models. We show that geoelectrical time lapse data are useful as alternative calibration data and can provide as good results as borehole temperature measurements. The fully coupled modeling framework using field data achieved performance comparable to calibration on borehole temperature records in terms of model fit within 0.6 ∘ C, inversion convergence metrics, as well as the predictive performance of the calibrated model. Article in Journal/Newspaper permafrost The Cryosphere Directory of Open Access Journals: DOAJ Articles The Cryosphere 18 1 321 340 |
institution |
Open Polar |
collection |
Directory of Open Access Journals: DOAJ Articles |
op_collection_id |
ftdoajarticles |
language |
English |
topic |
Environmental sciences GE1-350 Geology QE1-996.5 |
spellingShingle |
Environmental sciences GE1-350 Geology QE1-996.5 S. Tomaškovičová T. Ingeman-Nielsen Coupled thermo–geophysical inversion for permafrost monitoring |
topic_facet |
Environmental sciences GE1-350 Geology QE1-996.5 |
description |
This study explores an alternative way of deriving soil thermal properties from surface geophysical measurements. We combined ground surface temperature time series with time lapse geoelectrical acquisitions measured from the ground surface in a fully coupled inversion scheme to calibrate a heat conduction model. The quantitative link between the thermal and geoelectrical parts of the modeling framework is the temperature-dependent unfrozen water content, which is also the main factor influencing electrical response of the ground. The apparent resistivity data were incorporated into the coupled framework without being inverted separately, thus reducing the uncertainty inevitably associated with inverted resistivity models. We show that geoelectrical time lapse data are useful as alternative calibration data and can provide as good results as borehole temperature measurements. The fully coupled modeling framework using field data achieved performance comparable to calibration on borehole temperature records in terms of model fit within 0.6 ∘ C, inversion convergence metrics, as well as the predictive performance of the calibrated model. |
format |
Article in Journal/Newspaper |
author |
S. Tomaškovičová T. Ingeman-Nielsen |
author_facet |
S. Tomaškovičová T. Ingeman-Nielsen |
author_sort |
S. Tomaškovičová |
title |
Coupled thermo–geophysical inversion for permafrost monitoring |
title_short |
Coupled thermo–geophysical inversion for permafrost monitoring |
title_full |
Coupled thermo–geophysical inversion for permafrost monitoring |
title_fullStr |
Coupled thermo–geophysical inversion for permafrost monitoring |
title_full_unstemmed |
Coupled thermo–geophysical inversion for permafrost monitoring |
title_sort |
coupled thermo–geophysical inversion for permafrost monitoring |
publisher |
Copernicus Publications |
publishDate |
2024 |
url |
https://doi.org/10.5194/tc-18-321-2024 https://doaj.org/article/50f234735aca49ce9d6433b53ae24482 |
genre |
permafrost The Cryosphere |
genre_facet |
permafrost The Cryosphere |
op_source |
The Cryosphere, Vol 18, Pp 321-340 (2024) |
op_relation |
https://tc.copernicus.org/articles/18/321/2024/tc-18-321-2024.pdf https://doaj.org/toc/1994-0416 https://doaj.org/toc/1994-0424 doi:10.5194/tc-18-321-2024 1994-0416 1994-0424 https://doaj.org/article/50f234735aca49ce9d6433b53ae24482 |
op_doi |
https://doi.org/10.5194/tc-18-321-2024 |
container_title |
The Cryosphere |
container_volume |
18 |
container_issue |
1 |
container_start_page |
321 |
op_container_end_page |
340 |
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1790606718471766016 |