Journal of Glaciology
Empirical data suggest that the race of calving of grounded glaciers terminating in water is directly proportional to the water depth. Important controls on calving may be the extent to which a calving face tends to become oversteepened by differential flow within the ice and the extent to which bending moments promote extrusion and bottom crevassing at the base of a calving face. Numerical modelling suggests that the tendency to become oversteepened increases roughly linearly with water depth. In addition, extending longitudinal deviatoric stresses at the base of a calving face increase with water depth. These processes provide a possible physical explanation for the observed calving-rate/water-depth relation.
Hanson, Brian and Hooke, Roger, "Glacier Calving: A Numerical Model of Forces in the Calving-Speed/Water-Depth Relation" (2000). Earth Science Faculty Scholarship. 40.
Hanson, B, and Hooke, RL, 2000, Glacier Calving: A Numerical Model of Forces in the Calving-Speed/Water-Depth Relation: Journal of Glaciology, v. 46, p. 188-196. Available on publisher's site at: http://www.ingentaconnect.com/content/igsoc/jog/2000/00000046/00000153/art00002
© Copyright 2000 by the International Glaciological Society
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