Quantifying Contributions of Atmospheric CH4 from Different Sources Using A Coupling Automated CH4, CO2 and Rn Measurements in A Shallow Natural Seep Field at Yinggehai Basin, China

Abstract:

Natural seeps are significant sources of methane to the global atmospheric methane budget. However submarine groundwater discharge is non-negligible source of methane and carbon dioxide to surface water and the atmosphere. In this study, a coupled continious equlibrator-methane-carbon dioxide-radon measurement was performed in a shallow natural seepfield at Yinggehai Basin, China and at the adjecting well, so as to quantify the contributions of methane and carbon dioxide from different sources.