Partial melting in polycrystalline ice: pathways identified in 3D neutron tomographic images
- Publication type:
- Journal article
- Metadata:
-
- Autoren
- Christopher JL Wilson
- Mark Peternell
- Filomena Salvemini
- Vladimir Luzin
- Frieder Enzmann
- Olga Moravcova
- Nicholas JR Hunter
- Autoren-URL
- https://www.webofscience.com/api/gateway?GWVersion=2&SrcApp=fis-test-1&SrcAuth=WosAPI&KeyUT=WOS:001190496900001&DestLinkType=FullRecord&DestApp=WOS_CPL
- DOI
- 10.5194/tc-18-819-2024
- eISSN
- 1994-0424
- Externe Identifier
- Clarivate Analytics Document Solution ID: LY9S4
- ISSN
- 1994-0416
- Ausgabe der Veröffentlichung
- 2
- Zeitschrift
- CRYOSPHERE
- Paginierung
- 819 - 836
- Datum der Veröffentlichung
- 2024
- Status
- Published
- Titel
- Partial melting in polycrystalline ice: pathways identified in 3D neutron tomographic images
- Sub types
- Article
- Ausgabe der Zeitschrift
- 18
Data source: Web of Science (Lite)
- Other metadata sources:
-
- Abstract
- <jats:p>Abstract. In frozen cylinders composed of deuterium ice (Tm+3.8 ∘C) and 10 % water ice (Tm 0 ∘C), it is possible to track melt pathways produced by increasing the temperature during deformation. Raising the temperature to +2 ∘C produces water (H2O) which combines with the D2O ice to form mixtures of HDO. As a consequence of deformation, HDO and H2O meltwater are expelled along conjugate shear bands and as compactional melt segregations. Melt segregations are also associated with high-porosity networks related to the location of transient reaction fronts where the passage of melt-enriched fluids is controlled by the localized ductile yielding and lowering of the effective viscosity. Accompanying the softening, the meltwater also changes and weakens the crystallographic fabric development of the ice. Our observations suggest meltwater-enriched compaction and shear band initiation provide instabilities and the driving force for an enhancement of permeability in terrestrial ice sheets and glaciers. </jats:p>
- Autoren
- Christopher JL Wilson
- Mark Peternell
- Filomena Salvemini
- Vladimir Luzin
- Frieder Enzmann
- Olga Moravcova
- Nicholas JR Hunter
- DOI
- 10.5194/tc-18-819-2024
- eISSN
- 1994-0424
- Ausgabe der Veröffentlichung
- 2
- Zeitschrift
- The Cryosphere
- Sprache
- en
- Online publication date
- 2024
- Paginierung
- 819 - 836
- Status
- Published online
- Herausgeber
- Copernicus GmbH
- Herausgeber URL
- http://dx.doi.org/10.5194/tc-18-819-2024
- Datum der Datenerfassung
- 2024
- Titel
- Partial melting in polycrystalline ice: pathways identified in 3D neutron tomographic images
- Ausgabe der Zeitschrift
- 18
Data source: Crossref
- Beziehungen:
- Property of