Hypsometric forcing of stagnant ice margins: Pleistocene valley glaciers, San Juan Mountains, Colorado
The A. uses the location of stagnant ice deposits in many San Juan valleys, Colorado, to test how valley hypsometry and topographic obstructions influence the type of margin present during valley glacier retreat.
Numerical modeling of advective transport of saturated deforming sediment beneath the Lake Michigan Lobe, Laurentide Ice Sheet
Geotechnics ; Glacial features ; Ice sheet ; Lake ; Michigan ; Moraine ; Numerical model ; Quaternary ; Sediment transport ; Shear stress ; Soil mechanics ; United States of America ; Wisconsinan
This study has two complementary components: 1) development of a flowline model of the LML (Lake Michigan Lobe), in which the constitutive law for ice flow was coupled with a non-linear, rate-dependent, constitutive flow law for the sediment; and 2
the maximum altitude and shape of that interconnected ice mass, and include 1) the source of the Two Medicine piedmont lobe (local or cordilleran ice), 2) correlation of terminal deposits of the Flathead lobe, and 3) regional paleoclimate at last glacial
A simulation model that examines the development of valley cross-profiles as a result of glacial erosion has been constructed by placing a finite-element model for ice flow within an iterative program that modifies channel cross-section form
on the basis of an erosion equation. The simulation model has previously been used to examine how different flow laws, erosion laws and ice discharge histories affect medium-scale landform development. This allows to better understand the development of glacial