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Distinguished Professor, Earth, Marine and Environmental Sciences, UNC-Chapel Hill


  • Ph.D., North Carolina State University, 1986


The overarching focus of my research is on land-ocean interactions and global change. I am interested in the role of Major Rivers (Amazon, Changjiang, Huanghe, Orinoco, Danube, Columbia, Mississippi) in global biogeochemical cycles and global change. Rivers are the primary interface between continental and oceanic environments and play a critical role in global cycles such as carbon.

Areas of Expertise

  • Transformation and fate of particulate materials
  • Marsh accretion rates in coastal North Carolina and the response of coastal wetlands to sea-level rise
  • Response of bay-head deltas to sea-level rise (Roanoke and Newport Rivers, NC)