FRINK Linked Data Fragments server

Matches in SemOpenAlex for { <https://semopenalex.org/work/W2162635475> ?p ?o ?g. }

• W2162635475 abstract "[1] The ice-till interface beneath soft-bedded glaciers can be marked by an abrupt transition from an ice layer above to unfrozen sediments below. Alternatively, the transition can be more gradual, with ice infiltrating the underlying sediments to form a fringe layer that contains a mixture of ice, liquid water, and sediment particles. The fringe thickness h is predicted to commonly be several decimeters to meters in scale, implying that significant sediment transport can occur when sliding occurs beneath. I adapt theories for the thermodynamic and mechanical balances that control freezing and melting in porous media to determine h as a function of effective stress N, the rate of basal heat flow, and key sediment properties. A fringe is expected only when N > pf ≈ 1.1 (Tm − Tf) MPa/°C, where Tm − Tf is the temperature drop below the pressure-melting point that is needed for ice to infiltrate the pore space; pf increases with decreased grain size. For sediment properties that are within the typical range expected of the tills beneath glaciers, pf = O (104) Pa. The rate that water can be transported through the fringe and frozen onto or melted from the glacier base can achieve a steady state that is in balance with the rate that latent heat is transported to or from the basal interface. At constant N, when a gradual increase in heat flow from the glacier base causes the rate of melting to decrease, h increases and continues to do so when the heat flow is great enough to produce freezing. As freezing becomes more rapid and h increases further, the rate of fluid supply to the glacier base reaches a maximum when the effective permeability is sufficiently reduced by the partial ice saturation in the fringe. Larger h can be achieved with slower freezing at the glacier base, but steady states with larger h are unstable. The maximum rate of fluid supply to the glacier base is greater at lower N, higher temperature gradients, and for sediments with higher permeabilities. Unsteady behavior can lead to large changes in h when there is a mismatch between the rate that latent heat can be extracted and the rate that fluid is supplied to the glacier base. Transient behavior driven by abrupt changes in N is characterized by rapid variations in freezing rate, followed by slower adjustments to h that are limited by the timescale for the conduction of latent heat. The resulting patterns of sediment deformation are expected to commonly be distributed over finite depth ranges even when shear is perfectly localized at any single instant in time." @default.
• W2162635475 created "2016-06-24" @default.
• W2162635475 creator A5066832437 @default.
• W2162635475 date "2008-02-29" @default.
• W2162635475 modified "2023-10-13" @default.
• W2162635475 title "A theory for ice-till interactions and sediment entrainment beneath glaciers" @default.
• W2162635475 cites W1492862160 @default.
• W2162635475 cites W1524046246 @default.
• W2162635475 cites W16096330 @default.
• W2162635475 cites W1617305328 @default.
• W2162635475 cites W171690549 @default.
• W2162635475 cites W1964933291 @default.
• W2162635475 cites W1967920261 @default.
• W2162635475 cites W1980021094 @default.
• W2162635475 cites W1980064716 @default.
• W2162635475 cites W1982471565 @default.
• W2162635475 cites W1983883208 @default.
• W2162635475 cites W1985470701 @default.
• W2162635475 cites W1986344849 @default.
• W2162635475 cites W1988423070 @default.
• W2162635475 cites W1990571896 @default.
• W2162635475 cites W1996927549 @default.
• W2162635475 cites W2012995560 @default.
• W2162635475 cites W2015571131 @default.
• W2162635475 cites W2019928287 @default.
• W2162635475 cites W2022104457 @default.
• W2162635475 cites W2041038424 @default.
• W2162635475 cites W2044731918 @default.
• W2162635475 cites W2045334254 @default.
• W2162635475 cites W2046756471 @default.
• W2162635475 cites W2049830390 @default.
• W2162635475 cites W2054754818 @default.
• W2162635475 cites W2059758159 @default.
• W2162635475 cites W2064681737 @default.
• W2162635475 cites W2070022478 @default.
• W2162635475 cites W2070422861 @default.
• W2162635475 cites W2073986968 @default.
• W2162635475 cites W2074966022 @default.
• W2162635475 cites W2074984164 @default.
• W2162635475 cites W2075541437 @default.
• W2162635475 cites W2076922631 @default.
• W2162635475 cites W2077962315 @default.
• W2162635475 cites W2087625531 @default.
• W2162635475 cites W2096304650 @default.
• W2162635475 cites W2099589321 @default.
• W2162635475 cites W2101686096 @default.
• W2162635475 cites W2105149683 @default.
• W2162635475 cites W2126363109 @default.
• W2162635475 cites W2128462960 @default.
• W2162635475 cites W2129269026 @default.
• W2162635475 cites W2130920912 @default.
• W2162635475 cites W2143281214 @default.
• W2162635475 cites W215806105 @default.
• W2162635475 cites W4235556738 @default.
• W2162635475 cites W4240909439 @default.
• W2162635475 cites W4242377938 @default.
• W2162635475 cites W4244357758 @default.
• W2162635475 cites W621175769 @default.
• W2162635475 cites W1963821203 @default.
• W2162635475 doi "https://doi.org/10.1029/2007jf000870" @default.
• W2162635475 hasPublicationYear "2008" @default.
• W2162635475 type Work @default.
• W2162635475 sameAs 2162635475 @default.
• W2162635475 citedByCount "91" @default.
• W2162635475 countsByYear W21626354752012 @default.
• W2162635475 countsByYear W21626354752013 @default.
• W2162635475 countsByYear W21626354752014 @default.
• W2162635475 countsByYear W21626354752015 @default.
• W2162635475 countsByYear W21626354752016 @default.
• W2162635475 countsByYear W21626354752017 @default.
• W2162635475 countsByYear W21626354752018 @default.
• W2162635475 countsByYear W21626354752019 @default.
• W2162635475 countsByYear W21626354752020 @default.
• W2162635475 countsByYear W21626354752021 @default.
• W2162635475 countsByYear W21626354752022 @default.
• W2162635475 countsByYear W21626354752023 @default.
• W2162635475 crossrefType "journal-article" @default.
• W2162635475 hasAuthorship W2162635475A5066832437 @default.
• W2162635475 hasBestOaLocation W21626354751 @default.
• W2162635475 hasConcept C100834320 @default.
• W2162635475 hasConcept C107038049 @default.
• W2162635475 hasConcept C111368507 @default.
• W2162635475 hasConcept C114793014 @default.
• W2162635475 hasConcept C126603772 @default.
• W2162635475 hasConcept C127313418 @default.
• W2162635475 hasConcept C135343436 @default.
• W2162635475 hasConcept C136894858 @default.
• W2162635475 hasConcept C138885662 @default.
• W2162635475 hasConcept C139992725 @default.
• W2162635475 hasConcept C149767477 @default.
• W2162635475 hasConcept C192191005 @default.
• W2162635475 hasConcept C193091731 @default.
• W2162635475 hasConcept C197435368 @default.
• W2162635475 hasConcept C2816523 @default.
• W2162635475 hasConcept C81820708 @default.
• W2162635475 hasConceptScore W2162635475C100834320 @default.
• W2162635475 hasConceptScore W2162635475C107038049 @default.
• W2162635475 hasConceptScore W2162635475C111368507 @default.
• W2162635475 hasConceptScore W2162635475C114793014 @default.
• W2162635475 hasConceptScore W2162635475C126603772 @default.

• next