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dc.contributor.author
Fischer, Urs H.
dc.contributor.author
Braun, André
dc.contributor.author
Bauder, Andreas
dc.contributor.author
Flowers, Gwenn E.
dc.contributor.editor
MacAyeal, Douglas R.
dc.date.accessioned
2022-02-17T10:46:40Z
dc.date.available
2019-06-14T07:54:51Z
dc.date.available
2019-06-25T16:47:30Z
dc.date.available
2022-02-17T10:46:40Z
dc.date.issued
2005
dc.identifier.isbn
0-946417-35-0
en_US
dc.identifier.issn
0260-3055
dc.identifier.issn
1727-5644
dc.identifier.other
10.3189/172756405781813528
en_US
dc.identifier.uri
http://hdl.handle.net/20.500.11850/47752
dc.identifier.uri
http://hdl.handle.net/20.500.11850/347422
dc.description.abstract
Digital elevation models of the bed and surface of Unteraargletscher, Switzerland, are used to reconstruct the theoretical pattern of basal water drainage for the years 1927, 1947, 1961 and 1997, during which period the glacier was thinning and receding. The theoretical drainage pattern for 1997 compares well, in a broad sense, with the locations of active moulins and the hydraulic connection status of boreholes drilled to the glacier bed. Changes in the basal water-flow pattern over the period 1927–97 that are revealed by the theoretical reconstructions of the subglacial drainage system structure are likely to have resulted from changes in glacier geometry. Concurrent with the retreat and thinning of the glacier, the height of medial moraines increased, probably due to the insulating effect of the debris cover reducing the melt of the underlying ice. This increase of moraine heights has led to the formation of hydraulic barriers at the glacier bed such that water flow has become channelized beneath the ice along drainage axes that parallel the course of the medial moraines on the glacier surface.
en_US
dc.language.iso
en
en_US
dc.publisher
International Glaciological Society
en_US
dc.title
Changes in geometry and subglacial drainage derived from digital elevation models: Unteraargletscher, Switzerland, 1927-97
en_US
dc.type
Conference Paper
ethz.book.title
Papers from the International Symposium on Ice and Water Interactions: Processes across the Phase Boundary: held in Portland, Oregon, USA, 26-30 July 2004
en_US
ethz.journal.title
Annals of Glaciology
ethz.journal.volume
40
en_US
ethz.journal.abbreviated
Ann Glaciol
ethz.pages.start
20
en_US
ethz.pages.end
24
en_US
ethz.event
2004 International Symposium on Ice and Water Interactions
en_US
ethz.event.location
Portland, OR, USA
en_US
ethz.event.date
July 26-30, 2004
en_US
ethz.identifier.wos
ethz.identifier.nebis
005132686
ethz.publication.place
Cambridge
en_US
ethz.publication.status
published
en_US
ethz.leitzahl
03504 - Minor, Hans-Erwin
en_US
ethz.leitzahl.certified
03504 - Minor, Hans-Erwin
ethz.date.deposited
2017-06-09T11:04:51Z
ethz.source
ECIT
ethz.identifier.importid
imp59364f1ad092239223
ethz.ecitpid
pub:56193
ethz.ecitpid
pub:78576
ethz.eth
yes
en_US
ethz.availability
Metadata only
en_US
ethz.rosetta.installDate
2019-06-14T07:54:56Z
ethz.rosetta.lastUpdated
2022-03-29T18:56:14Z
ethz.rosetta.versionExported
true
dc.identifier.olduri
http://hdl.handle.net/20.500.11850/34968
dc.identifier.olduri
http://hdl.handle.net/20.500.11850/47752
ethz.COinS
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