Matches in SemOpenAlex for { <https://semopenalex.org/work/W1980998553> ?p ?o ?g. }
- W1980998553 endingPage "216" @default.
- W1980998553 startingPage "193" @default.
- W1980998553 abstract "This paper examines the sedimentary infill of a spectacular, 500-m-long, 100-m-wide ice-walled supraglacial channel, excavated into the snout of Skeiðarárjökull, Iceland during the November 1996 jökulhlaup. The ice-walled channel developed in an area of the glacier, which was extensively fractured during the jökulhlaup. Sculpting of the ice-walled channel into the active snout of Skeiðarárjökull suggests that the presence of stagnating glacier ice is not a prerequisite for the development of ice-walled channels. The ice-walled channel occupied an inter-lobate location, which acted as a focus for meltwater during the November 1996 jökulhlaup. The geometry of the supraglacial ice-walled channel system acted as a major control on the morphology and sedimentology of jökulhlaup deposits, through the tremendous spatial variability of resultant flow conditions. Maximum calculated jökulhlaup powers and shear stresses for the supraglacial ice-walled channel reached 40,000 W m−2 and 5000 N m−2, respectively, with associated mean flow velocities between 7 and 11 m s−1. Within the main ice-walled channel, Ground Penetrating Radar and outcrop exposure provide evidence of an ∼8-m-thick progradational and aggradational gravel macroform succession. The supraglacial ice-walled channel system is therefore analogous to a bedrock-confined fluvial system. This study provides a new analogue for the interpretation of ice-contact glaciofluvial deposits associated with former ice margins in Iceland and other areas subject to high magnitude discharges. Former supraglacial ice-walled channels resulting from tunnel collapse and ice margin break-up during high magnitude jökulhlaups will be associated with extensive coarse-grained, heavily kettled proglacial outwash surfaces. It is clear that the relationship between the characteristics of former ice-walled channels labeled as eskers and the prevailing glaciological and hydrological conditions needs to be modified in light of our knowledge of a modern flood-related large-scale supraglacial channel and its sedimentary infill. Such re-evaluation may provide a valuable new insight into former ice margin positions, modes of glacier retreat, and the role of high magnitude floods within the sedimentary record of former proglacial areas. This study therefore improves our understanding of the meltwater magnitude and frequency regime of former glaciers." @default.
- W1980998553 created "2016-06-24" @default.
- W1980998553 creator A5004488663 @default.
- W1980998553 creator A5032147570 @default.
- W1980998553 creator A5047525036 @default.
- W1980998553 creator A5059732218 @default.
- W1980998553 creator A5061727192 @default.
- W1980998553 creator A5085345533 @default.
- W1980998553 date "2001-02-01" @default.
- W1980998553 modified "2023-09-27" @default.
- W1980998553 title "Morphology and sedimentology of a giant supraglacial, ice-walled, jökulhlaup channel, Skeiðarárjökull, Iceland: implications for esker genesis" @default.
- W1980998553 cites W1492083399 @default.
- W1980998553 cites W1528850606 @default.
- W1980998553 cites W1568564239 @default.
- W1980998553 cites W1969001361 @default.
- W1980998553 cites W1971276946 @default.
- W1980998553 cites W1976022571 @default.
- W1980998553 cites W1979978301 @default.
- W1980998553 cites W1985681229 @default.
- W1980998553 cites W1995185494 @default.
- W1980998553 cites W2001850664 @default.
- W1980998553 cites W2013037263 @default.
- W1980998553 cites W2026299813 @default.
- W1980998553 cites W2036309053 @default.
- W1980998553 cites W2043284170 @default.
- W1980998553 cites W2048878937 @default.
- W1980998553 cites W2051920545 @default.
- W1980998553 cites W2054829011 @default.
- W1980998553 cites W2057358247 @default.
- W1980998553 cites W2059782822 @default.
- W1980998553 cites W2071552612 @default.
- W1980998553 cites W2072313112 @default.
- W1980998553 cites W2076094691 @default.
- W1980998553 cites W2095067347 @default.
- W1980998553 cites W2098288902 @default.
- W1980998553 cites W2138354675 @default.
- W1980998553 cites W2165287893 @default.
- W1980998553 cites W2261257844 @default.
- W1980998553 cites W2319951885 @default.
- W1980998553 cites W2329927703 @default.
- W1980998553 cites W2332549592 @default.
- W1980998553 cites W2768039853 @default.
- W1980998553 cites W2937929693 @default.
- W1980998553 cites W2938380214 @default.
- W1980998553 cites W2097893868 @default.
- W1980998553 doi "https://doi.org/10.1016/s0921-8181(00)00073-4" @default.
- W1980998553 hasPublicationYear "2001" @default.
- W1980998553 type Work @default.
- W1980998553 sameAs 1980998553 @default.
- W1980998553 citedByCount "57" @default.
- W1980998553 countsByYear W19809985532012 @default.
- W1980998553 countsByYear W19809985532013 @default.
- W1980998553 countsByYear W19809985532014 @default.
- W1980998553 countsByYear W19809985532015 @default.
- W1980998553 countsByYear W19809985532016 @default.
- W1980998553 countsByYear W19809985532017 @default.
- W1980998553 countsByYear W19809985532018 @default.
- W1980998553 countsByYear W19809985532019 @default.
- W1980998553 countsByYear W19809985532020 @default.
- W1980998553 countsByYear W19809985532021 @default.
- W1980998553 countsByYear W19809985532022 @default.
- W1980998553 crossrefType "journal-article" @default.
- W1980998553 hasAuthorship W1980998553A5004488663 @default.
- W1980998553 hasAuthorship W1980998553A5032147570 @default.
- W1980998553 hasAuthorship W1980998553A5047525036 @default.
- W1980998553 hasAuthorship W1980998553A5059732218 @default.
- W1980998553 hasAuthorship W1980998553A5061727192 @default.
- W1980998553 hasAuthorship W1980998553A5085345533 @default.
- W1980998553 hasConcept C100834320 @default.
- W1980998553 hasConcept C104873425 @default.
- W1980998553 hasConcept C104932425 @default.
- W1980998553 hasConcept C109007969 @default.
- W1980998553 hasConcept C111368507 @default.
- W1980998553 hasConcept C112959462 @default.
- W1980998553 hasConcept C114793014 @default.
- W1980998553 hasConcept C119599485 @default.
- W1980998553 hasConcept C123750103 @default.
- W1980998553 hasConcept C127162648 @default.
- W1980998553 hasConcept C127313418 @default.
- W1980998553 hasConcept C127413603 @default.
- W1980998553 hasConcept C136894858 @default.
- W1980998553 hasConcept C197435368 @default.
- W1980998553 hasConcept C207318512 @default.
- W1980998553 hasConcept C81820708 @default.
- W1980998553 hasConceptScore W1980998553C100834320 @default.
- W1980998553 hasConceptScore W1980998553C104873425 @default.
- W1980998553 hasConceptScore W1980998553C104932425 @default.
- W1980998553 hasConceptScore W1980998553C109007969 @default.
- W1980998553 hasConceptScore W1980998553C111368507 @default.
- W1980998553 hasConceptScore W1980998553C112959462 @default.
- W1980998553 hasConceptScore W1980998553C114793014 @default.
- W1980998553 hasConceptScore W1980998553C119599485 @default.
- W1980998553 hasConceptScore W1980998553C123750103 @default.
- W1980998553 hasConceptScore W1980998553C127162648 @default.
- W1980998553 hasConceptScore W1980998553C127313418 @default.
- W1980998553 hasConceptScore W1980998553C127413603 @default.
- W1980998553 hasConceptScore W1980998553C136894858 @default.
- W1980998553 hasConceptScore W1980998553C197435368 @default.