Zobrazeno 1 - 10
of 17
pro vyhledávání: '"Roiy Sayag"'
Autor:
Jeremie Schmiedel, Roiy Sayag
Subglacial hydrology is a key component in ice sheet dynamics. The presence of subglacial water at the ice-bed interface can significantly reduce basal friction and facilitate rapid ice flow, which could lead to the formation of surges and ice stream
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::8d6fd1dfd221b3a2ed647a35b1622006
https://doi.org/10.5194/egusphere-egu23-4220
https://doi.org/10.5194/egusphere-egu23-4220
Autor:
Thomas Kleiner, Yannic Fischler, Raban Emunds, Lennart Oestreich, Christian Bischof, Jeremie Schmiedel, Roiy Sayag, Angelika Humbert
Simulating the hydrological systems underneath ice sheets and glaciers is important for estimating the freshwater flux into the ocean as well as inferring the characteristics of the hydrological system and its impact on ice sheet dynamics. In particu
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::da2bf32fdad5cfeeebec5db5be982865
https://doi.org/10.5194/egusphere-egu22-7234
https://doi.org/10.5194/egusphere-egu22-7234
Autor:
M. Grae Worster, Roiy Sayag
Publikováno v:
Journal of Fluid Mechanics. 881:722-738
We present laboratory experiments that show that fingering patterns can emerge when circular interfaces of strain-rate-softening fluids displace less viscous fluids in extensionally dominated flows. The fingers were separated by regions in which the
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::cc5787c0312609d3fc41e0df0466ea1a
https://doi.org/10.1017/jfm.2019.777
https://doi.org/10.1017/jfm.2019.777
Autor:
Roiy Sayag, M. Grae Worster
Publikováno v:
Journal of Fluid Mechanics. 881:739-771
The interface of a strain-rate-softening fluid that displaces a low-viscosity fluid in a circular geometry with negligible drag can develop finger-like patterns separated by regions in which the fluid appears to be torn apart. Such patterns were obse
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::2a5977276f6f4ccb1988751a0462cccf
https://doi.org/10.1017/jfm.2019.778
https://doi.org/10.1017/jfm.2019.778
Publikováno v:
Journal of Fluid Mechanics. 916
The motion of glaciers over their bedrock or drops of fluid along a solid surface can vary dramatically when these substrates are lubricated. We investigate the coupled flow of a gravity current (GC) of a strain-rate softening fluid that is lubricate
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::08b7b2e682578d4b1319582a875e94d4
https://doi.org/10.1017/jfm.2021.240
https://doi.org/10.1017/jfm.2021.240
Autor:
Ayala A. Gyllenberg, Roiy Sayag
The motion of glaciers over their bedrock or drops of fluid along a solid surface can become unstable when these substrates are lubricated. Previous studies modelled such systems as coupled gravity currents (GCs), consisting of one fluid that lubrica
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::50cba3c2733c76fa87995f17866f5ab1
Autor:
Lielle Stern, Roiy Sayag
Ice shelves that spread into the ocean can develop rifts, which can trigger ice-berg calving and enhance ocean-induced melting. Fluid mechanically, this system is analogues to the propagation of a non-Newtonian, strain-rate-softening fluid representi
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::b6d3b70a69ca6e168ced67a50eca1f10
https://doi.org/10.5194/egusphere-egu2020-22338
https://doi.org/10.5194/egusphere-egu2020-22338
Autor:
Roiy Sayag
Publikováno v:
Physical Review Letters. 123
The front of a fluid that displaces a less viscous fluid in shear-dominated flows is known to be stable. We show that in predominantly extensional flows on a sphere, a similar front of a strain-rate-softening fluid can become unstable and evolve fing
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::3efd1673ef65dfdff498e30c2b8f48cc
https://doi.org/10.1103/physrevlett.123.214502
https://doi.org/10.1103/physrevlett.123.214502
Autor:
Roiy Sayag, Jerome A. Neufeld
Publikováno v:
Journal of Fluid Mechanics. 801:65-90
We study the propagation of viscous gravity currents over a thin porous substrate with finite capillary entry pressure. Near the origin, where the current is deep, propagation of the current coincides with leakage through the substrate. Near the nose
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::f05e288703045d9626773b76028efafc
https://doi.org/10.1017/jfm.2016.412
https://doi.org/10.1017/jfm.2016.412
Autor:
M. Grae Worster, Roiy Sayag
Publikováno v:
Geophysical Research Letters. 40:5877-5881
[1] We combine the dynamics of ice, bed, and ocean in a new elastic model for the tidal-timescale migration of grounding lines on deformable foundations. Previous interpretations of tidal flexure using models of elastic ice shelves with fixed groundi
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::3d9a03baab28e1157dcad4ff6890d494
https://doi.org/10.1002/2013gl057942
https://doi.org/10.1002/2013gl057942