Below are some projects I completed as part of my coursework at the University of Arkansas.
The shape of melt: the first report of an area-perimeter for topographic sinks on debris covered glaciers
- I observed a fractal perimeter dimension for topographic sinks on the Ngozumpa Glacier. The relationship appears valid over four years and more than three orders of magnitude in sink area. This PowerPoint presentation was completed for a class project, but the work presented within is part of an in-preparation manuscript. For more information, please see my Research page.
A simple model of large boulder transport during glacial lake outburst floods (GLOFs)
- Glacial lake outburst floods are highly destructive and mobilize large boulders (1-10 m diameter). Some paleoflood studies use large boulder deposits to approximate flood discharge. This project explored the validity of a basic boulder transport model used in recent paleoflood studies. I critically examined the model by estimating boulder transport during a wide range of discharges during a hypothetical GLOF of Spillway Lake, on the Ngozumpa Glacier in the Everest Region of Nepal. I conclude that simplified boulder transport models are poor representations of reality and lead to erroneous estimations of paleoflood discharges.
Microtextures of glacially weathered sand grains
- Many grain textural analysis studies cite “striations” on quartz sand grains as direct evidence for glacial weathering. In this paper I explore the published literature on glacially weathered quartz sand grain textures. No studies were found to explicitly describe the mechanism(s) capable of of carving glacial striations in quartz sand grains. Conspicuously, the term “striation” disappears from the literature on glacial sand grain textures beginning in the 1990s. I cast further doubt on the existence of glacial striations on sand grains with some basic physics calculations.