Current Graduate Students


  • Jennifer Estrada (MS student) comes from Dartmouth University with a BS in Earth Sciences. Co-advised by Matt Fantle, Jennifer is using calcium isotopes and a reactive transport hydrologic model to quantify fractionation and flow dynamics into a salar in the Atacama Desert.
  • Beth Hoagland (PhD candidate) comes from Washington University with a BS in Earth and Planetary Sciences. She is combining DTS and stream chemistry measurements to describe stream and groundwater exchange processes. Beth will also be using isotopic methods to quantify heavy metal transport and reactions downstream of a gold mine in Papua New Guinea.
  • Kalle Jahn (PhD student) comes from Williams College with a BA in Geosciences. He will use physical and geochemical modeling to assess the impacts of agricultural intensification on water resources in Brazil and Colombia.
  • Curtis Kennedy (MS student) earned his BS here at Penn State and was a researcher at the State College USDA ARS office. He is using traditional hydrologic and geophysical field methods to quantify the relative contributions of local and regional groundwater at an agricultural site on karst.
  • Joel Roop-Eckart (PhD student) comes from Columbus State University. Co-advised by Klaus Keller, Joel will address a hydro-climate decision problem using physical and statistical modeling of the hydrologic and climate system, while accounting for economic and possible socio-political risk factors.
  • Callum Wayman (PhD student) comes from Purdue University with a BS in Multidisciplinary Engineering. He will be working at the Critical Zone Observatory, assessing the stream concentration and solute discharge relationships at an agricultural site, and using hydrologic, lithology, and land use data to model geochemical transport over the larger Shaver's Creek watershed.

  • Undergraduate Student Researchers


  • Cecilia Cullen, graduating Spring 2016
  • James Deflumeri, graduating Fall 2017
  • Patrick Duggan, graduating Spring 2016
  • Adam Lewis, graduating Spring 2016
  • Maddy Nyblade, graduating Spring 2017

  • Current Collaborators Outside Penn State


  • Katherine Alfredo Earth Institute Postdoctoral Fellow, Columbia University
  • Naresh Devineni Assistant Professor, City College of New York
  • Joshua Elliott Research Scientist and Fellow, University of Chicago
  • Josh Fisher Director of AC4, Columbia University
  • Victor Gutierrez-Velez Assistant Professor, Temple University
  • Kate Tully Assistant Professor, University of Maryland

  • Previous Undergraduate Student Researchers


  • Rochelle Linsenbigler, 2016
  • Craig Pezak, 2016
  • Molly Cain, 2015
  • Kenneth Weiss, 2015