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dc.contributor.author
Cicoira, Alessandro
dc.contributor.author
Beutel, Jan
dc.contributor.author
Faillettaz, Jérôme
dc.contributor.author
Gärtner-Roer, Isabelle
dc.contributor.author
Vieli, Andreas
dc.date.accessioned
2022-06-21T11:14:49Z
dc.date.available
2018-11-19T18:06:01Z
dc.date.available
2018-11-21T09:03:53Z
dc.date.available
2022-06-21T11:14:49Z
dc.date.issued
2018-09-26
dc.identifier.issn
1994-0432
dc.identifier.issn
1994-0440
dc.identifier.other
10.5194/tc-2018-176
en_US
dc.identifier.uri
http://hdl.handle.net/20.500.11850/304692
dc.identifier.doi
10.3929/ethz-b-000304692
dc.description.abstract
In recent years, observations have highlighted seasonal and inter-annual variability in rockglacier flow. Temperature forcing, through heat conduction, has been proposed as one of the key processes to explain these variations in kinematics. However, this mechanism has not yet been quantitatively assessed against real-world data. We present a 1-D numerical modelling approach that couples heat conduction to an empirically derived creep model for ice-rich frozen soils. We use this model to investigate the effect of thermal heat conduction on seasonal and inter-annual variability in rockglacier flow. We compare the model results with borehole temperature data and surface velocity measurements from the PERMOS and PermaSense monitoring network in the Swiss Alps. We further conduct a model sensitivity analysis in order to resolve the importance of the different model parameters. Using the prescribed empirically derived rheology and observed near-surface temperatures, we are able to model the right order of magnitude of creep flow. However, both inter-annual and seasonal variability are underestimated by an order of magnitude, implying that heat conduction alone can not explain the observed variations. Therefore, non-conductive processes, likely linked to water availability, dominate the short-term velocity signal.
en_US
dc.format
application/pdf
en_US
dc.language.iso
en
en_US
dc.publisher
Copernicus
en_US
dc.rights.uri
http://creativecommons.org/licenses/by/4.0/
dc.title
Resolving the influence of temperature forcing through heat conduction on rockglacier dynamics: a numerical modelling approach
en_US
dc.type
Working Paper
dc.rights.license
Creative Commons Attribution 4.0 International
ethz.journal.title
The Cryosphere Discussions
ethz.size
25 p.
en_US
ethz.publication.place
Göttingen
en_US
ethz.publication.status
published
en_US
ethz.leitzahl
ETH Zürich::00002 - ETH Zürich::00012 - Lehre und Forschung::00007 - Departemente::02140 - Dep. Inf.technologie und Elektrotechnik / Dep. of Inform.Technol. Electrical Eng.::02640 - Inst. f. Technische Informatik und Komm. / Computer Eng. and Networks Lab.::03429 - Thiele, Lothar (emeritus) / Thiele, Lothar (emeritus)
en_US
ethz.leitzahl.certified
ETH Zürich::00002 - ETH Zürich::00012 - Lehre und Forschung::00007 - Departemente::02140 - Dep. Inf.technologie und Elektrotechnik / Dep. of Inform.Technol. Electrical Eng.::02640 - Inst. f. Technische Informatik und Komm. / Computer Eng. and Networks Lab.::03429 - Thiele, Lothar (emeritus) / Thiele, Lothar (emeritus)
en_US
ethz.relation.isPreviousVersionOf
10.3929/ethz-b-000333359
ethz.date.deposited
2018-11-19T18:06:12Z
ethz.source
FORM
ethz.eth
yes
en_US
ethz.availability
Open access
en_US
ethz.rosetta.installDate
2018-11-21T09:04:02Z
ethz.rosetta.lastUpdated
2023-02-07T03:39:51Z
ethz.rosetta.versionExported
true
ethz.COinS
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