Jordan Clark

Dr. Clark received his BS from Yale University and his PhD from the Lamont-Doherty Earth Observatory of Columbia University and his research is focused on understanding hydrological and geochemical interactions that occur near the earth's surface and the effects of external anthropogenic and climatic forcing on these interactions. He uses geochemical tracers (both trace solutes and isotopes) in his investigations of earth surface processes. During the last decade, isotope hydrology as a sub-field has matured significantly and can now be used to addresses a significant number of new problems relating to hydrology and near surface processes. He believes it is important to work on fundamental aspects of regional environmental problems. His graduate studies on the Hudson River and, more recently, his research on Managed Aquifer Storage in California and aspects of the study on natural marine hydrocarbon seepage are examples of this effort. The remainder of his research time is spent examining geochemical problems related to global cycles and climate change (both recent and glacial/interglacial). His research on the hydrochemistry of springs, paleo-proxy data stored in groundwater, and methane emissions from hydrocarbon seepage illustrate this effort. Although his work examines problems in different environments, it is united by a common set of questions: how do transport processes affect water chemistry and quality and what are the impacts of climate change and other anthropogenic forcing on water chemistry and flow.