dc.date.accessioned | 2023-01-26T17:32:31Z | |
dc.date.available | 2023-01-26T17:32:31Z | |
dc.date.created | 2022-09-12T10:34:40Z | |
dc.date.issued | 2022 | |
dc.identifier.citation | Gilbert, Adrien Gimbert, Florent Thøgersen, Kjetil Schuler, Thomas Kääb, Andreas . A Consistent Framework for Coupling Basal Friction With Subglacial Hydrology on Hard-Bedded Glaciers. Geophysical Research Letters. 2022, 49(13) | |
dc.identifier.uri | http://hdl.handle.net/10852/99275 | |
dc.description.abstract | Below hard-bedded glaciers, both basal friction and distributed subglacial drainage are thought to be controlled by a network of cavities. Previous coupled hydro-mechanical models, however, describe cavity-driven friction and hydraulic transmissivity independently, resulting in a physically inconsistent cavity evolution between the two components of the models. Here, we overcome this issue by describing the hydro-mechanical system using a common cavity-evolution description, that governs both transient friction and hydraulic transmissivity. We show that our coupling approach is superior to previous formulations in explaining a unique observation record of glacier sliding speed from the French Alps. We find that, at multi-day to multi-decadal timescales, sliding speed can be expressed as a direct function of basal shear stress and water discharge, without accounting for water pressure, which simply adjusts to maintain the cavitation ratio needed to accommodate the water supply. | |
dc.language | EN | |
dc.rights | Attribution 4.0 International | |
dc.rights.uri | https://creativecommons.org/licenses/by/4.0/ | |
dc.title | A Consistent Framework for Coupling Basal Friction With Subglacial Hydrology on Hard-Bedded Glaciers | |
dc.title.alternative | ENEngelskEnglishA Consistent Framework for Coupling Basal Friction With Subglacial Hydrology on Hard-Bedded Glaciers | |
dc.type | Journal article | |
dc.creator.author | Gilbert, Adrien | |
dc.creator.author | Gimbert, Florent | |
dc.creator.author | Thøgersen, Kjetil | |
dc.creator.author | Schuler, Thomas | |
dc.creator.author | Kääb, Andreas | |
cristin.unitcode | 185,15,18,20 | |
cristin.unitname | NJORD fysikk - Senter for studier av jordens fysikk | |
cristin.ispublished | true | |
cristin.fulltext | original | |
cristin.qualitycode | 2 | |
dc.identifier.cristin | 2050665 | |
dc.identifier.bibliographiccitation | info:ofi/fmt:kev:mtx:ctx&ctx_ver=Z39.88-2004&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.jtitle=Geophysical Research Letters&rft.volume=49&rft.spage=&rft.date=2022 | |
dc.identifier.jtitle | Geophysical Research Letters | |
dc.identifier.volume | 49 | |
dc.identifier.issue | 13 | |
dc.identifier.doi | https://doi.org/10.1029/2021GL097507 | |
dc.type.document | Tidsskriftartikkel | |
dc.type.peerreviewed | Peer reviewed | |
dc.source.issn | 0094-8276 | |
dc.type.version | PublishedVersion | |
cristin.articleid | e2021GL097 | |
dc.relation.project | NFR/301837 | |