Morphodynamics of Distributive River Systems
This research explores the processes that build deltas, the various shapes they take, and their vulnerabilities to global change. We couple theory, often in the form of dynamical models, with observations in the field and subsurface. The project's ultimate goal is develop predictive theories for the behavior of these systems and the stratal record of their deposits. The current field site is Wax Lake Delta, Louisiana.
Funding: NSF
One graduate student RA available
Click here to see the Research Proposal
The Critical Zone Observatory
The purpose of this observatory and associated interdisciplinary research is to quantitatively predict the creation, evolution, and structure of regolith as a function of the geochemical, hydrologic, biologic, and geomorphologic processes operating in a temperate, forested landscape. My part of this team research is to create a next-generation landscape evolution model based on PIHM, the Penn State Integrated Hydrologic Model by adding functions describing conservation of bedrock and sediment mass, multi-grain size sediment routing, channel initiation and growth, hillslope sediment flux by three-throw, rilling after fires, gravity slides, and regolith-generating functions. We will then explore the response of regolith and hydrology to perturbations away from steady state. In particular, we will explore the question of how climatic and anthropogenic perturbations impact the critical zone within study site.
Funding: NSF Critical Zone Program
One graduate student RA available
Sedimentology and Sequence Stratigraphy of the Marcellus Gas Play
The Middle Devonian Marcellus Shale in the Appalachian Basin is being actively drilled for unconventional natural gas. Many questions remain unanswered about this class of reservoir including their sequence stratigraphy, depositional environments, and mode of emplacement. Students interested in developing exploration and production models of unconventional shale reservoirs are encouraged to apply.
Funding: Appalachian Basin Black Shales Group
One graduate student RA available
Click here to see the Research Proposal
Ancient Biodiviersity Hotspot in Southern South America: Evolution of Floras in Patagonia from Latest Cretaceous to Middle Eocene
This research investigates the K-T event and recovery of macrofloras in Patagonia, to be studied for the first time using integrated data from stratigraphically and sedimentologically controlled outcrops. Questions to be addressed are: 1) Are there major losses of richness, significant shifts in floral composition, and a long recovery as seen in North America; and 2) was a rainforest biome present in central Patagonia?
Funding: NSF
No graduate student RAs available at present
Click here to see the Research Proposal