Zobrazeno 1 - 10
of 92
pro vyhledávání: '"A. W. Rempel"'
Publikováno v:
Geophysical Research Letters, Vol 51, Iss 12, Pp n/a-n/a (2024)
Abstract Glaciers and ice streams flowing over sediment beds commonly have a layer of ice‐rich debris adhered to their base, known as a “frozen fringe,” but its impact on basal friction is unknown. We simulated basal slip over granular beds wit
Externí odkaz:
https://doaj.org/article/569e0f00de0c4fe2837999a4e0d68660
Autor:
L. F. Emerson, A. W. Rempel
Publikováno v:
The Cryosphere, Vol 1, Iss 1, Pp 11-19 (2007)
We report laboratory determinations of the shear resistance to sliding melting ice with entrained particles over a hard, impermeable surface. With higher particle concentrations and larger particle sizes, Coulomb friction at particle-bed contacts dom
Externí odkaz:
https://doaj.org/article/12e667ca450b4d799d8ade7ff8fe3be4
Publikováno v:
Communications Earth & Environment, Vol 2, Iss 1, Pp 1-8 (2021)
Daily variations in seismic S-wave anisotropy reveal the dynamic response of englacial fractures to changing meltwater supply, according to shear wave splitting measurements from a seismometer network on the Rhonegletscher, Switzerland.
Externí odkaz:
https://doaj.org/article/664e22c59fda4dd7b04acc7e9fe4ee6c
Publikováno v:
Journal of Glaciology. :1-6
Most theoretical descriptions of stresses induced by freezing are rooted in the (generalized) Clapeyron equation, which predicts the pressure that a solid can exert as it cools below its melting temperature. This equation is central for topics rangin
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::571cc0d6c47d28c1c09c5d8d7c74472d
https://doi.org/10.1017/jog.2023.28
https://doi.org/10.1017/jog.2023.28
Publikováno v:
Frontiers in Earth Science, Vol 8 (2021)
Gas hydrates form at relatively high pressures in near-surface, organic-rich marine sediments, with the base of the hydrate stability field and the onset of partial gas saturation determined by temperature increases with depth. Because of pore-scale
Externí odkaz:
https://doaj.org/article/81dea191abb64600a66382b5b2ea22d6
Publikováno v:
Journal of Advances in Modeling Earth Systems, Vol 12, Iss 10, Pp n/a-n/a (2020)
Abstract Freezing in porous media is associated with a host of dynamic phenomena that stem from the presence and mobility of premelted liquid at subzero temperatures. Accurate assessments of the progressive liquid‐ice phase transition is required f
Externí odkaz:
https://doaj.org/article/adc2c62e377347e78497475139bd19b9
Publikováno v:
Nature Communications, Vol 9, Iss 1, Pp 1-6 (2018)
Across all glaciers, ice caps, and ice sheets, the gravitational driving stress, and therefore the average basal shear stress falls in a narrow range that tops out around 1 bar. Here, the authors show that the mechanical resistance posed by heterogen
Externí odkaz:
https://doaj.org/article/1c348f071bda42b5a31a1c95ddfe6402
Publikováno v:
Journal of Glaciology. 68:197-203
The importance of glacier sliding has motivated a rich literature describing the thermomechanical interactions between ice, liquid water and bed materials. Early recognition of the gradient in melting temperature across small bed obstacles led to foc
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::234b6242005a4713ea989c9603a3c835
https://doi.org/10.1017/jog.2021.107
https://doi.org/10.1017/jog.2021.107
The importance of frost weathering processes has long been discussed in the context of cold-climate landscape evolution. The 9 % volumetric expansion of in situ water when it freezes to ice was initially held responsible for generating the stresses t
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::a425e1a9109203063255705064aabdc1
https://doi.org/10.5194/icg2022-90
https://doi.org/10.5194/icg2022-90
