1. Measuring concentrations of natural gas in three streams in Pennsylvania to estimate methane fluxes from the subsurface Open Access Author: Grieve, Paul Luke Title: Measuring concentrations of natural gas in three streams in Pennsylvania to estimate methane fluxes from the subsurface Graduate Program: Geosciences Keywords: MethaneCarbon isotopesStream monitoringwater chemistryGroundwaterNortheastern PennsylvaniaMass balance File: Download Grieve_MS_Thesis.pdf Committee Members: Susan Louise Brantley, Thesis Advisor/Co-Advisor