A new model for estimating subsurface ice content based on combined electrical and seismic data sets
Detailed knowledge of the material properties and internal structures of frozen ground is one of the prerequisites in many permafrost studies. In the absence of direct evidence, such as in-situ borehole measurements, geophysical methods are an increasingly interesting option for obtaining subsurface...
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2011
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ftdoajarticles:oai:doaj.org/article:f346de0160e54f02bf904d5a3ec6bd09 2023-05-15T16:37:07+02:00 A new model for estimating subsurface ice content based on combined electrical and seismic data sets C. Hauck M. Böttcher H. Maurer 2011-06-01T00:00:00Z https://doi.org/10.5194/tc-5-453-2011 https://doaj.org/article/f346de0160e54f02bf904d5a3ec6bd09 EN eng Copernicus Publications http://www.the-cryosphere.net/5/453/2011/tc-5-453-2011.pdf https://doaj.org/toc/1994-0416 https://doaj.org/toc/1994-0424 doi:10.5194/tc-5-453-2011 1994-0416 1994-0424 https://doaj.org/article/f346de0160e54f02bf904d5a3ec6bd09 The Cryosphere, Vol 5, Iss 2, Pp 453-468 (2011) Environmental sciences GE1-350 Geology QE1-996.5 article 2011 ftdoajarticles https://doi.org/10.5194/tc-5-453-2011 2022-12-31T03:51:57Z Detailed knowledge of the material properties and internal structures of frozen ground is one of the prerequisites in many permafrost studies. In the absence of direct evidence, such as in-situ borehole measurements, geophysical methods are an increasingly interesting option for obtaining subsurface information on various spatial and temporal scales. The indirect nature of geophysical soundings requires a relation between the measured variables (e.g. electrical resistivity, seismic velocity) and the actual subsurface constituents (rock, water, air, ice). In this work, we present a model which provides estimates of the volumetric fractions of these four constituents from tomographic electrical and seismic images. The model is tested using geophysical data sets from two rock glaciers in the Swiss Alps, where ground truth information in form of borehole data is available. First results confirm the applicability of the so-called 4-phase model, which allows to quantify the contributions of ice-, water- and air within permafrost areas as well as detecting solid bedrock. Apart from a similarly thick active layer with enhanced air content for both rock glaciers, the two case studies revealed a heterogeneous distribution of ice and unfrozen water within Muragl rock glacier, where bedrock was detected at depths of 20–25 m, but a comparatively homogeneous ice body with only minor heterogeneities within Murtèl rock glacier. Article in Journal/Newspaper Ice permafrost The Cryosphere Directory of Open Access Journals: DOAJ Articles The Cryosphere 5 2 453 468 |
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 C. Hauck M. Böttcher H. Maurer A new model for estimating subsurface ice content based on combined electrical and seismic data sets |
topic_facet |
Environmental sciences GE1-350 Geology QE1-996.5 |
description |
Detailed knowledge of the material properties and internal structures of frozen ground is one of the prerequisites in many permafrost studies. In the absence of direct evidence, such as in-situ borehole measurements, geophysical methods are an increasingly interesting option for obtaining subsurface information on various spatial and temporal scales. The indirect nature of geophysical soundings requires a relation between the measured variables (e.g. electrical resistivity, seismic velocity) and the actual subsurface constituents (rock, water, air, ice). In this work, we present a model which provides estimates of the volumetric fractions of these four constituents from tomographic electrical and seismic images. The model is tested using geophysical data sets from two rock glaciers in the Swiss Alps, where ground truth information in form of borehole data is available. First results confirm the applicability of the so-called 4-phase model, which allows to quantify the contributions of ice-, water- and air within permafrost areas as well as detecting solid bedrock. Apart from a similarly thick active layer with enhanced air content for both rock glaciers, the two case studies revealed a heterogeneous distribution of ice and unfrozen water within Muragl rock glacier, where bedrock was detected at depths of 20–25 m, but a comparatively homogeneous ice body with only minor heterogeneities within Murtèl rock glacier. |
format |
Article in Journal/Newspaper |
author |
C. Hauck M. Böttcher H. Maurer |
author_facet |
C. Hauck M. Böttcher H. Maurer |
author_sort |
C. Hauck |
title |
A new model for estimating subsurface ice content based on combined electrical and seismic data sets |
title_short |
A new model for estimating subsurface ice content based on combined electrical and seismic data sets |
title_full |
A new model for estimating subsurface ice content based on combined electrical and seismic data sets |
title_fullStr |
A new model for estimating subsurface ice content based on combined electrical and seismic data sets |
title_full_unstemmed |
A new model for estimating subsurface ice content based on combined electrical and seismic data sets |
title_sort |
new model for estimating subsurface ice content based on combined electrical and seismic data sets |
publisher |
Copernicus Publications |
publishDate |
2011 |
url |
https://doi.org/10.5194/tc-5-453-2011 https://doaj.org/article/f346de0160e54f02bf904d5a3ec6bd09 |
genre |
Ice permafrost The Cryosphere |
genre_facet |
Ice permafrost The Cryosphere |
op_source |
The Cryosphere, Vol 5, Iss 2, Pp 453-468 (2011) |
op_relation |
http://www.the-cryosphere.net/5/453/2011/tc-5-453-2011.pdf https://doaj.org/toc/1994-0416 https://doaj.org/toc/1994-0424 doi:10.5194/tc-5-453-2011 1994-0416 1994-0424 https://doaj.org/article/f346de0160e54f02bf904d5a3ec6bd09 |
op_doi |
https://doi.org/10.5194/tc-5-453-2011 |
container_title |
The Cryosphere |
container_volume |
5 |
container_issue |
2 |
container_start_page |
453 |
op_container_end_page |
468 |
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1766027416365432832 |