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dc.contributor.author
Church, Gregory James
dc.contributor.author
Bauder, Andreas
dc.contributor.author
Grab, Melchior
dc.contributor.author
Rabenstein, Lasse
dc.contributor.author
Singh, Satyan
dc.contributor.author
Maurer, Hansruedi
dc.date.accessioned
2019-08-19T10:12:08Z
dc.date.available
2019-08-17T20:46:01Z
dc.date.available
2019-08-19T10:12:08Z
dc.date.issued
2019-09
dc.identifier.issn
0260-3055
dc.identifier.issn
1727-5644
dc.identifier.other
10.1017/aog.2019.19
en_US
dc.identifier.uri
http://hdl.handle.net/20.500.11850/359148
dc.identifier.doi
10.3929/ethz-b-000359148
dc.description.abstract
Englacial hydrology plays an important role in routing surface water to the glacier's bed and it consequently affects the glacier's dynamics. However, it is often difficult to observe englacial conduit conditions on temperate glaciers because of their short-lived nature. We acquired repeated active surface seismic data over the Rhone Glacier, Switzerland to monitor and characterise englacial conduit conditions. Amplitude-versus-angle analysis suggested that the englacial conduit is water filled and between 0.5 and 4 m thick. A grid of GPR profiles, acquired during the 2018 melt season, showed the englacial conduit network persisting and covering ~ 14,000 m2. In late summer 2018, several boreholes were drilled into the conduit network. We observed generally stable water pressure, but there were also short sudden increases. A borehole camera provided images of a fast flowing englacial stream transporting sediment through the conduit. From these observations, we infer that the englacial conduit network is fed by surface meltwater and morainal streams. The surface and morainal streams merge together, enter the glacier subglacially and flow through subglacial channels along the flank. These subglacial channels flow into highly efficient englacial conduits traversing the up-glacier section of the overdeepening before connecting with the subglacial drainage system.
en_US
dc.format
application/pdf
en_US
dc.language.iso
en
en_US
dc.publisher
International Glaciological Society
en_US
dc.rights.uri
http://creativecommons.org/licenses/by-nc-sa/4.0/
dc.subject
glacier geophysics
en_US
dc.subject
glacier hydrology
en_US
dc.subject
ground-penetrating radar
en_US
dc.subject
mountain glaciers
en_US
dc.subject
seismics
en_US
dc.title
Detecting and characterising an englacial conduit network within a temperate Swiss glacier using active seismic, ground penetrating radar and borehole analysis
en_US
dc.type
Journal Article
dc.rights.license
Creative Commons Attribution-NonCommercial-ShareAlike 4.0 International
dc.date.published
2019-05-27
ethz.journal.title
Annals of Glaciology
ethz.journal.volume
60
en_US
ethz.journal.issue
79
en_US
ethz.journal.abbreviated
Ann Glaciol
ethz.pages.start
193
en_US
ethz.pages.end
205
en_US
ethz.version.deposit
publishedVersion
en_US
ethz.grant
Comprehensive 3D characterization of temperate alpine glaciers using geophysical techniques
en_US
ethz.identifier.wos
ethz.identifier.scopus
ethz.publication.place
Cambridge
en_US
ethz.publication.status
published
en_US
ethz.leitzahl
ETH Zürich::00002 - ETH Zürich::00012 - Lehre und Forschung::00007 - Departemente::02115 - Dep. Bau, Umwelt und Geomatik / Dep. of Civil, Env. and Geomatic Eng.::02611 - V. Wasserbau, Hydrologie u. Glaziologie / Lab. Hydraulics,Hydrology,Glaciology::09599 - Farinotti, Daniel / Farinotti, Daniel
ethz.leitzahl
ETH Zürich::00002 - ETH Zürich::00012 - Lehre und Forschung::00007 - Departemente::02330 - Dep. Erdwissenschaften / Dep. of Earth Sciences::02506 - Institut für Geophysik / Institute of Geophysics::03953 - Robertsson, Johan / Robertsson, Johan
ethz.leitzahl.certified
ETH Zürich::00002 - ETH Zürich::00012 - Lehre und Forschung::00007 - Departemente::02115 - Dep. Bau, Umwelt und Geomatik / Dep. of Civil, Env. and Geomatic Eng.::02611 - V. Wasserbau, Hydrologie u. Glaziologie / Lab. Hydraulics,Hydrology,Glaciology::09599 - Farinotti, Daniel / Farinotti, Daniel
ethz.leitzahl.certified
ETH Zürich::00002 - ETH Zürich::00012 - Lehre und Forschung::00007 - Departemente::02330 - Dep. Erdwissenschaften / Dep. of Earth Sciences::02506 - Institut für Geophysik / Institute of Geophysics::03953 - Robertsson, Johan / Robertsson, Johan
ethz.grant.agreementno
169329
ethz.grant.agreementno
169329
ethz.grant.agreementno
169329
ethz.grant.fundername
SNF
ethz.grant.fundername
SNF
ethz.grant.fundername
SNF
ethz.grant.funderDoi
10.13039/501100001711
ethz.grant.funderDoi
10.13039/501100001711
ethz.grant.funderDoi
10.13039/501100001711
ethz.grant.program
Projekte MINT
ethz.date.deposited
2019-08-17T20:46:08Z
ethz.source
SCOPUS
ethz.eth
yes
en_US
ethz.availability
Open access
en_US
ethz.rosetta.installDate
2019-08-19T10:12:19Z
ethz.rosetta.lastUpdated
2022-03-28T23:30:34Z
ethz.rosetta.versionExported
true
ethz.COinS
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