Geoffrey Abers, a seismologist at Lamont-Doherty Earth Observatory, has studied the potential for earthquakes caused by injection of wastewater used in the fracking process. He is coauthor of a widely cited 2013 study suggesting that underground injection of wastes from oil extraction can cause earthquakes.
Roger N. Anderson, a petroleum geologist at Lamont-Doherty Earth Observatory and at Columbia’s engineering school, has used hydrofracking to measure rock properties in gas and oil reserves, and holds patents on several innovations to control the process. He can discuss the specifics of hydraulic fracturing, and energy exploration and extraction in general.
Marco Castaldi is an assistant professor at Columbia’s engineering school and at the Earth Engineering Center. He can discuss the basics of how natural gas forms underground, and the extraction and use of natural gas.
Steve Cohen is executive director of The Earth Institute. An ex-EPA official, he writes and lectures extensively on national and regional environmental issues. He can discuss the wider political and economic landscape surrounding hydraulic fracturing. (Read Cohen on hydrofracking in New York State)
Nicholas Christie-Blick is a geologist at Lamont-Doherty Earth Observatory. He can discuss the geological formation, context and extent of gas-bearing shales that are currently the focus of exploration and extraction.
Klaus S. Lackner, professor of geophysics and director of the Lenfest Center for Sustainable Energy, can discuss environmental impacts of natural gas combustion, especially as they relate to other fossil fuels or alternative energy strategies.
Upmanu Lall directs the Columbia Water Center and is professor of earth and environmental engineering. He can discuss groundwater issues in relation to hydraulic fracturing, including those related to basins supplying water to New York City.
Juerg M. Matter, a geochemist at Lamont-Doherty Earth Observatory, can discuss the basics of water flow, transport of contaminants in the subsurface and the potential environmental implications of hydrofracking.
Won-Young Kim, head of Lamont-Doherty Earth Observatory‘s cooperative seismic network, can address the question of manmade earthquakes and disposal of fracking wastes underground. In January 2012, he and colleagues John Armbruster showed a probable link between injections and earthquakes in Ohio.
Heather Savage, a seismologist at Lamont-Doherty Earth Observatory, can discuss the mechanics of how rocks fracture under natural or artificial forces, how basic hydrofracking works, and the implications for manmade earthquakes. She is coauthor of a widely cited 2013 study suggesting that underground injection of wastes from oil extraction can cause earthquakes.
Leonardo Seeber, a seismologist at Lamont-Doherty Earth Observatory, is expert in the current state of knowledge regarding manmade earthquakes, and the possibility of quakes related to injection of waste fluids into deep wells.
Tuncel Yegulalp is a professor of mining engineering at Columbia University’s engineering school. He can discuss the basic elements of how hydraulic fracturing works, and how it is used in the energy industry.
Richard Plunz is director of the Urban Design Lab, which published a 2009 report on hydrofracking in the upper Delaware River watershed. He can discuss issues related to the environmental and economic effects on local communities.