I study physical processes on the surfaces of the Earth, the Moon, Mars, and asteroids, mostly processes that involve water ice. Most of my time is spent on model computations, small and large, but I also carry out theoretical studies, data analysis, and field work.

Current Research Interests and Projects:

Selected Presentations

Ceres' Darkest Secret: Ice in Permanently Shadowed Craters
12 minute talk, Feb 2017
History of Snow and Ice on the Summits of Hawaii
Public/Outreach presentation, Hilo, Nov 2014
Theory of Ice Ages on Mars
Seminar ~1.5 hour
first version: 2007
most recent version: 2013
Lifetime of Ice on Main Belt Asteroids
Seminar based on Schorghofer, ApJ 682, 697–705 (2008) and more recent work.
most recent version: 2011
Acausal slope-area relations: a short presentation about a topic in quantitative geomorphology
most recent version: 2002

Code (most recent version)
v1.1.2 doi:10.5281/zenodo.162490 (most recent citeable version)
v1.1.1 doi:10.5281/zenodo.48851
v1.1.0 doi:10.5281/zenodo.35566
v1.0.1 doi:10.5281/zenodo.32616