van der Veen Fundamentals of Glacier Dynamics, Second Edition

2. Auflage 2013
ISBN: 978-1-4398-3567-8
Verlag: CRC Press
Format: PDF
Kopierschutz: Adobe DRM (»Systemvoraussetzungen)

E-Book, Englisch, 403 Seiten

Measuring, monitoring, and modeling technologies and methods changed the field of glaciology significantly in the 14 years since the publication of the first edition of Fundamentals of Glacier Dynamics. Designed to help readers achieve the basic level of understanding required to describe and model the flow and dynamics of glaciers, this second edition provides a theoretical framework for quantitatively interpreting glacier changes and for developing models of glacier flow.

See What’s New in the Second Edition:

- Streamlined organization focusing on theory, model development, and data interpretation

- Introductory chapter reviews the most important mathematical tools used throughout the remainder of the book

- New chapter on fracture mechanics and iceberg calving

- Consolidated chapter covers applications of the force-budget technique using measurements of surface velocity to locate mechanical controls on glacier flow

- The latest developments in theory and modeling, including the addition of a discussion of exact time-dependent similarity solutions that can be used for verification of numerical models

The book emphasizes developing procedures and presents derivations leading to frequently used equations step by step to allow readers to grasp the mathematical details as well as physical approximations involved without having to consult the original works. As a result, readers will have gained the understanding needed to apply similar techniques to somewhat different applications.
Extensively updated with new material and focusing more on presenting the theoretical foundations of glacier flow, the book provides the tools for model validation in the form of analytical steady-state and time-evolving solutions. It provides the necessary background and theoretical foundation for developing more realistic ice-sheet models, which is essential for better integration of data and observations as well as for better model development.

Zielgruppe

Graduate students in geophysics and glacier dynamics courses; scientists active in all aspects of glaciology and related research.

Autoren/Hrsg.

van der Veen, C.J.

Fachgebiete

• Naturwissenschaften Physik Angewandte Physik Geophysik
• Geowissenschaften Geologie Geophysik
• Geowissenschaften Geologie Geomorphologie, Erosion, Glaziologie

Inhaltsverzeichnis

Mathematical Tools
Vectors and Tensors
Stress and Strain
Error Analysis
Parametric Uncertainty Analysis
Calculating Strain Rates
Ice Deformation
Creep of Glacier Ice
Constitutive Relation
More about the Constitutive Relation
Fabric Effects in Glacier Ice
Creep in Axially Symmetric Ice
Mechanics of Glacier Flow
Force Balance
Interpreting Force Balance
The Force-Budget Technique
Bridging Effects
Stokes Equation Applied to Glacier Flow
Creep Closure of Englacial Tunnels
Modeling Glacier Flow
Introduction
Lamellar Flow
Including Lateral Drag
Glacier Flow Controlled by Lateral Drag
Ice-Shelf Spreading
Along-Flow Variations in Glacier Flow
Flow Near an Ice Divide
Equilibrium Profiles of Glaciers
Perfect Plasticity
Continuity Equation
Steady-State Profiles along a Flowline
Steady-State Profile of an Axisymmetric Ice Sheet
Steady-State Profile of a Free-Floating Ice Shelf
Flow Controlled by Lateral Drag
Glacier Thermodynamics
Conservation of Energy
Steady-State Temperature Profiles
Effect of Horizontal Heat Advection
Thermal Response of a Glacier to Changes in Climate
Radiation Balance at the Surface of a Glacier
Turbulent Heat Fluxes
Physical Properties of Firn
Calculated Near-Surface Snow Temperatures at SouthPole Station
Subglacial Processes
Introductory Concepts
Sliding with Cavitation
Glacier Flow over a Soft Bed
Subglacial Hydraulics
Tunnel Drainage
Fractures
Surface Crevasses
Fracture Mechanics
Two-Dimensional Crevasse Propagation
Basal Crevasses
Iceberg Calving
Numerical Ice-Sheet Models
Introductory Remarks
Numerical Methods
Model Driven by Shear Stress Only
FlowBand Model
Calculating the Temperature Field
Geodynamics
Ice-Shelf Models
Dynamics of Glaciers and Ice Sheets
Response to Changes in Surface Mass Balance
Response to Grounding Line Thinning
Time-Dependent Similarity Solutions
Glacier Surges
Marine Instability
Interpreting Observations
Introductory Remarks
Locating Mechanical Controls
Estimating the Role of Gradients in Longitudinal Stress
Estimating Resistance from Lateral Drag
References
Index

Über Autor(innen)

C. J. van der Veen is a glaciologist interested in the dynamics of fast-moving glaciers and ice streams. His research focuses on using measurements of ice velocity and glacier geometry to identify mechanical controls on glaciers and how changes in these controls affect glacier flow and stability. After completing his PhD at the University of Utrecht in the Netherlands, he spent 20 years at The Ohio State University as a research scientist with the Byrd Polar Research Center (1986–2006). He is currently a professor in the Geography Department and research scientist with the Center for Remote Sensing of Ice Sheets at the University of Kansas.