GIS Faculty and Staff

GIS Center, Earth and Resource Science

Troy Rosencrants, M.S.

GIS Center Manager

Education: M.S. Northern Illinois University 2013

Troy is in charge of managing projects, students working on those projects, and participate in research grants within the Center.  Troy's experience includes implementing GIS in meteorology/climatology, severe weather hazards research, spatiotemporal analysis of long-term macro-scale and micro-scale population dynamics, and cartography.

Earth and Resource Science

Greg Rybarczyk, Ph.D.

Assistant Professor

Education: Ph.D. University of Wisconsin-Milwaukee 2010

Greg manages the GIS program at UM-Flint and has used GIS for the past 10 years in the private, public, and government sectors.  Currently, he utilizes GIS and spatial analysis techniques for solving alternative transportation problems, historical preservation assessments, neighborhood planning, and crime modeling.  

Earth and Resource Science

Marty Kaufman, Ph.D.

Professor and Chair

Education: Ph.D. University of Michigan 1994

Marty has over 30 years of experience in GIS. He participated in the initial development of advanced geocoding software during the 1980s, led successful large-scale GIS implementations in industry and government, and has over 20 years teaching GIS at the University of Michigan in Ann Arbor and Flint.

Earth and Resource Science

Randall Repic, Ph.D.


Education: Ph.D. Indiana State University 1992

Randy has over 25 years of experience in teaching and research in satellite and aerial remote sensing for the analysis and presentation of environmental data. He has used remote sensing and spatial analysis applications to identify and investigate problems in ecosystem science, ecology, water resource management, pollution control, and land use/land cover dynamics.

Research Assistants

  • Richard Wetzel
    • Richard is working on the Food Access in Michigan project with Dr. Greg Rybarczyk as the GIS analyst.