IUTAM Symposium on Scaling Laws in Ice Mechanics and Ice Dynamics

This Volume constitutes the Proceedings of the IUTAM Symposium on 'Scaling Laws in Ice Mechanics and Ice Dynamics', held in Fairbanks, Alaska from 13th to 16th of June 2000. Ice mechanics deals with essentially intact ice: in this discipline, descriptions of the motion and deformation of Arctic/ Antarctic and river/lake ice call for the development of physically based constitutive and fracture models over an enormous range in scale: 0.01 m - 10 km. Ice dynamics, on the other hand, deals with the movement of broken ice: descriptions of an aggregate of ice floes call for accurate modeling of momentum transfer through the sea/ice system, again over an enormous range in scale: 1 km (floe scale) - 500 km (basin scale). For ice mechanics, the emphasis on lab-scale (0.01 - 0.5 m) research con­ trasts with applications at the scale of order 1 km (ice-structure interaction, icebreaking); many important upscaling questions remain to be explored.

Inhalt

Preface. The Icy Crust of the Jupiter Moon, Europa; R. Greeley. On the Understanding of the Local Ice Pressure Area Curve. Deterministic Approach; D. Blanchet, S. DeFranco. Ice Force Versus Aspect Ratio; D.M. Masterson, P.A. Spencer. Scale Effects and Randomness in the Estimation of Compressive Ice Loads; I. Jordaan, J. Pond. Absence of Size Effect in Brittle Crushing and Breakthrough Loads of Floating Ice Sheets; D.S. Sodhi. A New Pressure Sensor for Investigating Apparent Similarities in Ice Crushing Behavior Observed at Different Scales; R. Gagnon. The Physical Properties of Consolidated Ridge Ice Modeled as Frozen Rubble; S. Kioka, et al. Deformation and Failure of Ice Cover Under Compression; J. Tuhkuri. Ice Ridging Over Various Space Scales; A. Marchenko, A. Makshtas. Ice Velocity Effects and Ice Force Scaling; A. Palmer, I. Johnston. Influence of Velocity on Ice-Cone Interaction; M. Lau, et al. A Scaling Law for the Flexural Motion of Floating Ice; C. Fox. On the Factors Influencing the Scaling of Ice Forces; T. Takeuchi, et al. Fracture Of Ice on Scales Large and Small; E.M. Schulson. Microstructural Effects on Fracture Scaling in Concrete, Rock and Ice; J.G.M. Van Mier. Sea Ice Fracture and Friction; P.R. Sammonds, M.A. Rist. Scaling Laws for Sea Ice Fracture; Z.P. Baznt. On Fracture of Warm Ice; G.J. Rodin. Scale Invariance of Fracture Surfaces in Ice; J. Weiss. Modeling Sea Ice as an Elasto-Plastic Frictional Material; P.V. Lade. Modeling Failure Initation in Sea Ice Based on Loss of Ellipticity; H.L. Schreyer. Influence of Scale on the Constitutive Behavior of Sea Ice; D.M. Cole, J.P. Dempsey. Sea Ice Dynamics Models; R.S. Pritchard. The Elastic-Viscous-Plastic Sea Ice Dynamics Model. A Review; E.C. Hunke. Color Pages for Articles by Hunke (p. 289), Kwok (p. 315) and Aksenov and Hibler (p. 363). Deformation of the Arctic Ocean Sea Ice Cover Between November 1996 and April 1997: A Qualitative Survey; R. Kwok. On the Formation of Large Scale Structural Features; R. Goldstein, et al. Relationships Between Geostrophic Winds, Ice Strain Rates and the Piecewise Rigid Motions of Pack Ice; R.E. Moritz, H.L. Stern. River Ice Dynamics and Ice Jam Modeling; Hung Tao Shen, et al. Failure Propagation Effects in an Anisotropic Sea Ice Dynamics Model; Y. Aksenov, W.D. Hibler, III. The Effect of Tensile Strength in the Arctic Ice Pack; M.A. Hopkins. Investigations of Sea Ice Dynamics in the Baltic Sea; M. Leppäranta. Scaling Effects on Ice Kinematics From Remote Sensing Data; G. Leonard, H.H. Shen. Impact of Temporal-Spatio Resolution on Sea-Ice Drift and Deformation; C.A. Geiger, M.R. Drinkwater. Effect of High-Frequency Deformation on Sea-Ice Thickness; P. Heil, et al. Projection Operations and Fractal Dispersion; J.H. Cushman, et al. Mechanics of Random Media as a Tool for Scale Effects in Ice Fields; M. Ostoja-Starzewski. A Downscaling Structure for Distributions Describing Ice Characteristics; M. Lensu. Two Dimensional Minimax Theory on Shear Stress and a General Classification Model for Nonlinear Constitutive Relations; J. Ukita. On Least Cost Paths Using Informational Properties of SAR Imagery of Sea Ice; B. Kerman.