My name is Marisa Repasch. I am a PhD student at the University of Potsdam (Germany) studying the relationship between physical and biogeochemical processes in rivers, with a specific focus on the Rio Bermejo in northern Argentina. The goal of my PhD project is to quantify the role of rivers in the carbon cycle, with respect to carbon transport from source to sink.
I currently work at the German Centre for Geoscience Research (GFZ Potsam) with Dirk Sachse (organic geochemistry), Niels Hovius (geomorphology), and Hella Wittmann (earth surface geochemistry). My research is supported by the DFG-funded StRATEGy international research training group. Our goal is to understand the geomorphic drivers of terrestrial organic carbon transport and preservation through fluvial systems draining the central Argentinian Andes.
When I’m not in the lab or motoring on the Rio Bermejo, you can find me in the mountains on my bike! Mountain biking has been key to helping me improve my self-confidence, and enduring long uphill climbs teaches me to respect the rugged terrain that plate tectonics created.
In 2016 I earned my M.Sc. degree in Earth and Planetary Sciences at the University of New Mexico, under the supervision of Dr. Karl Karlstrom. There I studied the geologic and geomorphic evolution of the Rio Grande river system using U-Pb detrital zircon provenance and 40Ar/39Ar geochronology. Rivers set the pace of regional landscape evolution, so by learning the rates of change in the Rio Grande and the processes that drive these changes, we now understand why the New Mexico landscape has evolved the way it has.
In 2014 I received my B.S. in Earth and Environmental Science from Lehigh University, where I fell in love with Geology and academia. In addition to discovering my passion, I played on Lehigh’s Division 1 women’s basketball team.