Zobrazeno 1 - 10
of 115
pro vyhledávání: '"Alan W. Rempel"'
Publikováno v:
Journal of Glaciology, Vol 69, Pp 1091-1096 (2023)
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://doaj.org/article/2cee0ce36935480086e199cceee69073
Publikováno v:
Annals of Glaciology, Vol 64, Pp 13-25 (2023)
Small quantities of liquid water lining triple junctions in polycrystalline glacier ice form connected vein networks that enable material exchange with underlying basal environments. Diffuse debris concentrations commonly observed in ice marginal reg
Externí odkaz:
https://doaj.org/article/48036921f0524bf3891b1b31f670e030
Publikováno v:
Journal of Glaciology, Vol 68, Pp 197-203 (2022)
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://doaj.org/article/0c58b305d42142138edf1402c97d8821
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
Autor:
Bradley Paul Lipovsky, Colin R. Meyer, Lucas K. Zoet, Christine McCarthy, Dougal D. Hansen, Alan W. Rempel, Florent Gimbert
Publikováno v:
Annals of Glaciology, Vol 60, Pp 182-192 (2019)
The evolution of glaciers and ice sheets depends on processes in the subglacial environment. Shear seismicity along the ice–bed interface provides a window into these processes. Such seismicity requires a rapid loss of strength that is typically as
Externí odkaz:
https://doaj.org/article/82430bfcb66740f193b5f4c275d94401
Autor:
ALAN W. REMPEL, COLIN R. MEYER
Publikováno v:
Journal of Glaciology, Vol 65, Pp 518-521 (2019)
Glacier sliding over small obstacles relies on melting on their upstream sides and refreezing downstream. Previous treatments have appealed to ‘pressure melting’ as the cause of the spatial variations in melting temperature that drive this regela
Externí odkaz:
https://doaj.org/article/904f71b17fcd4edb99310e0b002148fa
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