<div class="csl-bib-body">
<div class="csl-entry">Flores-Orozco, A., Maierhofer, T., Aigner, L., Moser, C., Morra di Cella, U., & Hauck, C. (2022, December 15). <i>Improving the delineation of mountain permafrost with Induced Polarization through electrical and electromagnetic methods</i> [Conference Presentation]. AGU Fall Meeting 2022, Chicago, Illinois, USA, United States of America (the). http://hdl.handle.net/20.500.12708/152860</div>
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dc.identifier.uri
http://hdl.handle.net/20.500.12708/152860
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dc.description.abstract
Electrical resistivity tomography (ERT) has become a standard tool in the investigation of permafrost. However, the interpretation of inversion results can be ambiguous as air, ice and bedrock might result in similar signatures. Induced polarization (IP) measurements can help to alleviate this problem without significantly increasing the field efforts. To illustrate the benefits of the method, here we present IP imaging results for data collected over a broad range of geologically and morphologically different permafrost landforms in the Alps (Switzerland, Italy and Austria) as well as at a high-elevation site (above 4,500 m.a.s.l) in the Sierra Madre Oriental mountain range in Pico de Orizaba (Mexico). All measurements were collected in the frequency range between 0.5 and 240 Hz to investigate the frequency-dependence of the IP response and its link to subsurface hydrogeological and thermal properties. We also evaluate the application of transient electromagnetic (TEM) as an alternative technique to gain information about subsurface electrical properties, yet with much lighter instruments and without the need of galvanic contact with the ground. We show that TEM measurements provide reliable information once the IP effect is taken into account during the modeling and inversion of the data. Our results reveal an increase in the IP response at frequencies above 10 Hz with increasing the ice content in the subsurface; whereas the low frequency signatures are mainly controlled by geology and water content. Moreover, the combination of SIP imaging and TEM soundings permit an improved delineation of alpine permafrost sites regarding both the geometry of ice-rich areas, and the properties of the underlying materials.
en
dc.description.sponsorship
Vereine, Stiftungen, Preise
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dc.language.iso
en
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dc.subject
Spectral Induced Polarization
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dc.subject
Alpine Permafrost
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dc.subject
Transient Electromagnetic Method
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dc.subject
Rock Glaciers
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dc.subject
Near Surface Geophysics
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dc.title
Improving the delineation of mountain permafrost with Induced Polarization through electrical and electromagnetic methods
en
dc.type
Presentation
en
dc.type
Vortrag
de
dc.contributor.affiliation
Research Unit Geophysics, Department of Geodesy and Geoinformation, TU Wien
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dc.contributor.affiliation
Environmental Protection Agency of Valle d'Aosta, Climate Change Unit, Saint-Christophe, Italy
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dc.contributor.affiliation
University of Fribourg, Switzerland
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dc.relation.grantno
200021L_178823 / 1
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dc.type.category
Conference Presentation
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tuw.project.title
Improved ice quantification at alpine permafrost sites based on electrical and electromagnetic measurements of spectral induced polarization
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tuw.researchTopic.id
M2
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tuw.researchTopic.id
X1
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tuw.researchTopic.name
Materials Characterization
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tuw.researchTopic.name
Beyond TUW-research foci
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tuw.researchTopic.value
50
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tuw.researchTopic.value
50
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tuw.publication.orgunit
E120-03 - Forschungsbereich Geophysik
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tuw.author.orcid
0000-0003-0905-3718
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tuw.author.orcid
0000-0001-8858-5784
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tuw.author.orcid
0000-0003-4250-9705
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tuw.author.orcid
0000-0003-4488-6475
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tuw.event.name
AGU Fall Meeting 2022
en
tuw.event.startdate
12-12-2022
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tuw.event.enddate
16-12-2022
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tuw.event.online
Hybrid
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tuw.event.type
Event for scientific audience
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tuw.event.place
Chicago, Illinois, USA
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tuw.event.country
US
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tuw.event.institution
American Geophysical Union
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tuw.event.presenter
Flores-Orozco, Adrian
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wb.sciencebranch
Geodäsie, Vermessungswesen
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wb.sciencebranch.oefos
2074
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wb.sciencebranch.value
100
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item.cerifentitytype
Publications
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item.fulltext
no Fulltext
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item.languageiso639-1
en
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item.openairetype
conference paper not in proceedings
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item.openairecristype
http://purl.org/coar/resource_type/c_18cp
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item.grantfulltext
none
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crisitem.author.dept
E120-03 - Forschungsbereich Geophysik
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crisitem.author.dept
E120-03 - Forschungsbereich Geophysik
-
crisitem.author.dept
E120-03 - Forschungsbereich Geophysik
-
crisitem.author.dept
E120-03 - Forschungsbereich Geophysik
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crisitem.author.dept
Environmental Protection Agency of Valle d'Aosta, Climate Change Unit, Saint-Christophe, Italy
