Matches in SemOpenAlex for { <https://semopenalex.org/work/W2113476442> ?p ?o ?g. }
Showing items 1 to 97 of
97
with 100 items per page.
- W2113476442 endingPage "227" @default.
- W2113476442 startingPage "227" @default.
- W2113476442 abstract "Ice sheets are susceptible to the formation of ice streams, or narrow bands of fast-flowing ice whose high velocities are caused by rapid sliding at the contact between ice and the underlying bed. Based on recent geophysical work which has shown that the sliding motion of ice streams may be described by a Coulomb friction law, we investigate how the location of ice streams depends on the geometry of an ice sheet and on the mechanical properties of the underlying bed. More generally, this problem is relevant to the flow of thin films with Coulomb (or ‘solid’) friction laws applied at their base. By analogy with friction problems in elasticity, we construct a variational formulation for the free boundary between ice streams, where bed failure occurs, and the surrounding ice ridges, where there is little or no sliding. This variational problem takes the form of a non-coercive variational inequality, and we show that solutions exist provided a force and moment balance condition is satisfied. In that case, solutions are also unique except under certain specialized circumstances which are unlikely to arise for a real ice sheet. Further, we show how the variational formulation of the ice flow problem can be exploited to calculate numerical solutions, and to simulate the effect of changing ice geometry and bed friction on the location and velocities of streaming flow. Lastly, we study the effect of ice-shelf buttressing on the flow of ice streams whose spatial extent is determined by the yield stress distribution of the bed. In line with previous studies of ice-shelf buttressing, we find that the removal of an ice shelf can cause an ice stream feeding the ice shelf to speed up considerably, which underlines the important role ice shelves may play in controlling the dynamics of marine ice sheets." @default.
- W2113476442 created "2016-06-24" @default.
- W2113476442 creator A5043357774 @default.
- W2113476442 date "2006-05-24" @default.
- W2113476442 modified "2023-10-11" @default.
- W2113476442 title "A variational approach to ice stream flow" @default.
- W2113476442 cites W1520204308 @default.
- W2113476442 cites W1569211986 @default.
- W2113476442 cites W1579166787 @default.
- W2113476442 cites W1608051878 @default.
- W2113476442 cites W1653619892 @default.
- W2113476442 cites W1657612619 @default.
- W2113476442 cites W1681314783 @default.
- W2113476442 cites W1982616895 @default.
- W2113476442 cites W2001047742 @default.
- W2113476442 cites W2016830615 @default.
- W2113476442 cites W2052066159 @default.
- W2113476442 cites W2054794276 @default.
- W2113476442 cites W2061175874 @default.
- W2113476442 cites W2068484625 @default.
- W2113476442 cites W2106355577 @default.
- W2113476442 cites W2120787353 @default.
- W2113476442 cites W2126363109 @default.
- W2113476442 cites W2144631284 @default.
- W2113476442 cites W2145016426 @default.
- W2113476442 cites W2198393752 @default.
- W2113476442 cites W281236391 @default.
- W2113476442 cites W3021722416 @default.
- W2113476442 cites W42325346 @default.
- W2113476442 cites W81594258 @default.
- W2113476442 doi "https://doi.org/10.1017/s0022112006009591" @default.
- W2113476442 hasPublicationYear "2006" @default.
- W2113476442 type Work @default.
- W2113476442 sameAs 2113476442 @default.
- W2113476442 citedByCount "99" @default.
- W2113476442 countsByYear W21134764422012 @default.
- W2113476442 countsByYear W21134764422013 @default.
- W2113476442 countsByYear W21134764422014 @default.
- W2113476442 countsByYear W21134764422015 @default.
- W2113476442 countsByYear W21134764422016 @default.
- W2113476442 countsByYear W21134764422017 @default.
- W2113476442 countsByYear W21134764422018 @default.
- W2113476442 countsByYear W21134764422019 @default.
- W2113476442 countsByYear W21134764422020 @default.
- W2113476442 countsByYear W21134764422021 @default.
- W2113476442 countsByYear W21134764422022 @default.
- W2113476442 countsByYear W21134764422023 @default.
- W2113476442 crossrefType "journal-article" @default.
- W2113476442 hasAuthorship W2113476442A5043357774 @default.
- W2113476442 hasConcept C111368507 @default.
- W2113476442 hasConcept C114793014 @default.
- W2113476442 hasConcept C121332964 @default.
- W2113476442 hasConcept C123750103 @default.
- W2113476442 hasConcept C127313418 @default.
- W2113476442 hasConcept C136894858 @default.
- W2113476442 hasConcept C197435368 @default.
- W2113476442 hasConcept C31258907 @default.
- W2113476442 hasConcept C38349280 @default.
- W2113476442 hasConcept C41008148 @default.
- W2113476442 hasConcept C42090638 @default.
- W2113476442 hasConcept C57879066 @default.
- W2113476442 hasConcept C74650414 @default.
- W2113476442 hasConcept C81820708 @default.
- W2113476442 hasConceptScore W2113476442C111368507 @default.
- W2113476442 hasConceptScore W2113476442C114793014 @default.
- W2113476442 hasConceptScore W2113476442C121332964 @default.
- W2113476442 hasConceptScore W2113476442C123750103 @default.
- W2113476442 hasConceptScore W2113476442C127313418 @default.
- W2113476442 hasConceptScore W2113476442C136894858 @default.
- W2113476442 hasConceptScore W2113476442C197435368 @default.
- W2113476442 hasConceptScore W2113476442C31258907 @default.
- W2113476442 hasConceptScore W2113476442C38349280 @default.
- W2113476442 hasConceptScore W2113476442C41008148 @default.
- W2113476442 hasConceptScore W2113476442C42090638 @default.
- W2113476442 hasConceptScore W2113476442C57879066 @default.
- W2113476442 hasConceptScore W2113476442C74650414 @default.
- W2113476442 hasConceptScore W2113476442C81820708 @default.
- W2113476442 hasLocation W21134764421 @default.
- W2113476442 hasOpenAccess W2113476442 @default.
- W2113476442 hasPrimaryLocation W21134764421 @default.
- W2113476442 hasRelatedWork W1660942430 @default.
- W2113476442 hasRelatedWork W1994511582 @default.
- W2113476442 hasRelatedWork W2010547230 @default.
- W2113476442 hasRelatedWork W2048740472 @default.
- W2113476442 hasRelatedWork W2050050497 @default.
- W2113476442 hasRelatedWork W2083978549 @default.
- W2113476442 hasRelatedWork W2085954304 @default.
- W2113476442 hasRelatedWork W2330492953 @default.
- W2113476442 hasRelatedWork W2965462971 @default.
- W2113476442 hasRelatedWork W4240816371 @default.
- W2113476442 hasVolume "556" @default.
- W2113476442 isParatext "false" @default.
- W2113476442 isRetracted "false" @default.
- W2113476442 magId "2113476442" @default.
- W2113476442 workType "article" @default.