Patrick Broxton's Valles Caldera Research

Surface Hydrology Group - University of Arizona

My masters graduate research was conducted in the Valles Caldera, in northern New Mexico, and involved examining how variable energy fluxes might affect the mountain catchment hydrology of the region.  Specifically, I studied the landscape in terms of aspect (slope-direction) to control the amount of incoming solar insulation (and thus, how much energy) a particular hillslope receives.  I looked at a variety of factors such as residence times of near-surface water as well as the effects of water storage and water fluxes on differently oriented slopes using a distributed physically-based hydrologic model.  I also put together a movie that describes the use of Google Earth as a visualization tool for information that is important to hydrology and other earth sciences.

Animations: As part of my graduate research, I developed a physically-based model to understand hydrologic differences between north- and south-facing slopes.  Below are some examples of animations produced by the model.

December Solar Radiation Animation
March Solar Radiation Animation
Snow Melt Animation
Soil Moisture Animation

Maps: These maps are visual representations of the input layers to the modeling efforts.  They show the unique structural characteristics of the Valles Caldera.

Elevation | Slope | AspectSouthness | Topographic Index| Canopy Coverage

If the above movie doesn't play, Click Here