A numerical model of landform development by glacial erosion

  title={A numerical model of landform development by glacial erosion},
  author={Jonathan M. Harbor and Bernard Hallet and Charles F. Raymond},
The jagged peaks, knife-edged ridges, and steep-sided valleys of alpine landscapes are well known products of glaciation, yet little is known about how the dynamics of ice flow and glacial erosion give rise to such landforms. By linking a finite-element model for ice flow through a valley with a model for glacial erosion, we have simulated the gradual evolution of one of the most striking of glacial landforms, the U-shaped valley. Incorporating realistic glacier sliding laws and spatial… 
The Sliding Ice Incision Model: A New Approach to Understanding Glacial Landscape Evolution
Analytical long‐profile models of fluvial incision are fundamental in geomorphology for building intuition about long‐term landscape evolution and interpreting the climatic and tectonic histories of
Tectonic control on the persistence of glacially sculpted topography
It is indicated that glacial topography in Earth's most rapidly uplifting mountain ranges is rapidly replaced by fluvial topography and hence valley forms do not reflect the cumulative action of multiple glacial periods, implying that the classic physiographic signature of glaciated landscapes is best expressed in, and indeed limited by, the extent of relatively low-uplift terrain.
Numerical investigations of subglacial hydrology as a direct and indirect driver of glacial erosion
Glaciers shape high altitude and latitude landscapes in numerous ways. Erosion associated with glacial processes can limit the average height of mountain ranges, while creating the greatest relief on
Landforming processes in glaciated orogens : a numerical study
The interaction between tectonics and the processes of erosion (including denudation,transport and depostion) in active compressional orogens has recently received much attention. While most studies
Modeling the flow of glaciers in steep terrains: The integrated second‐order shallow ice approximation (iSOSIA)
[1] The rugged topography of mountain ranges represents a special challenge to computational ice sheet models simulating past or present glaciations. In mountainous regions, the topography steers


The Formation of Fjord Thresholds
The erosion rate of bedrock by glacier action is analyzed under conditions of constant-state radial convergent and divergent flow, assuming that the quarrying rate increases with increasing sliding
Two-dimensional, time-dependent modeling of an arbitrarily shaped ice mass with the finite-element technique
The two-dimensional, time-dependent flow of an arbitrarily shaped ice mass can be successfully modeled with the finite-element technique on a small computer. Methods developed for automatically
The Geomorphology of the Glacial Valley Cross Section
Several alpine valley systems in the southeastern Beartooth Mountains, Montana and Wyoming, have been examined using techniques similar to methods of stream system analysis. The general equation y ...