Zobrazeno 1 - 10
of 13
pro vyhledávání: '"L. W. Morland"'
Autor:
R. Staroszczyk, L. W. Morland
Publikováno v:
Journal of Glaciology, Vol 68, Pp 625-635 (2022)
The response of ice to applied stress on ice-sheet flow timescales is commonly described by a non-linear incompressible viscous fluid, for which the deviatoric stress has a quadratic relation in the strain rate with two response coefficient functions
Externí odkaz:
https://doaj.org/article/f0f7880f2e3f4f69abe994357796f294
Autor:
L. W. MORLAND
Publikováno v:
Journal of Glaciology, Vol 64, Pp 536-542 (2018)
The non-linearly viscous ice flow in the vicinity of a glacier terminus, an observation region, depends crucially on the upstream flow as well as on the local surface and bed conditions. The former requires a likely complex solution of the balance la
Externí odkaz:
https://doaj.org/article/83d5f4d455a4424b8410f35cd9140cb9
Publikováno v:
University of Manchester-PURE
Scopus-Elsevier
Scopus-Elsevier
The propagation of a periodic thermal wave into snow is significantly altered by the presense of a shallow rock interface because of the large difference in thermal properties of the two media. The temperature distribution is modeled using classical
Autor:
L. W. Morland, I. R. Johnson
Publikováno v:
Journal of Glaciology. 28:71-90
The small slope magnitude ε. or aspect ratio. of an ice sheet in steady plane motion under gravity user a horizontal plane bed, subject to balancing surface accumulation and ablation. and basal drainage. is determined by the aceunualation magnitude,
Publikováno v:
Journal of Glaciology. 30:140-152
A model of a non-linearly viscous ice sheet is used to investigate the influence of net mass-balance pattern, basal boundary condition, and subglacial topography on the size and shape of ice sheets. The aim is to enable geological evidence of the ext
Autor:
L. W. Morland, I. R. Johnson
Publikováno v:
Journal of Glaciology. 25:229-246
Steady plane flow under gravity of a symmetric ice sheet resting on a horizontal rigid bed, subject to surface accumulation and ablation, basal drainage, and basal sliding according to a shear-traction-velocity power law, is treated. The surface accu
Autor:
E. M. Shoemaker, L. W. Morland
Publikováno v:
Journal of Glaciology. 30:334-340
A model for glacier flow is developed which incorporates longitudinal deviatoric stress contributions to the field equations. The underlying assumptions may be applied to develop models for various situations. Here, they are developed for steady-stat
Autor:
L. W. Morland
Publikováno v:
Journal of Fluid Mechanics. 150:499-502
Publikováno v:
Journal of Glaciology. 30:131-139
The sliding law is defined as a basal boundary condition for the large-scale bulk ice flow, relating the tangential traction τb, overburden pressure pb, and tangential velocity ub on a smoothed-out mean bed contour. This effective bed is a lower bou
Autor:
L. W. Morland
Publikováno v:
Journal of Glaciology. 17:447-462
The treatments by Nye and Kamb of glacier sliding over a wavy bed with small slope, which assume the ice to be approximated by a Newtonian fluid of high viscosity, are complemented by the inclusion of the glacier depth and the inclination of the bed