The influence of a poroelastic till on rapid subglacial flooding and cavity formation

• Published in: Journal of Fluid Mechanics
• Main Authors: Hewitt, D. R., Chini, G. P., Neufeld, J. A.
• Format: Article in Journal/Newspaper
• Language: English
• Published: Cambridge University Press 2018
• Subjects: 05 - Petrology - Igneous; Metamorphic and Volcanic Studies; Contact Point; Greenland
• Online Access: http://eprints.esc.cam.ac.uk/4441/; http://eprints.esc.cam.ac.uk/4441/1/influence_of_a_poroelastic_till_on_rapid_subglacial_flooding_and_cavity_formation.pdf; https://doi.org/10.1017/jfm.2018.624

We develop a model of the rapid propagation of water at the contact between elastic glacial ice and a poroelastic subglacial till, motivated by observations of the rapid drainage of supraglacial lakes in Greenland. By treating the ice as an elastic bending beam, the fluid dynamics of contact with th...