Variability of Acoustically Evidenced Methane Bubble Emissions Offshore Western Svalbard
Journal: Geophysical Research Letters
Year: 2019

Abstract Large reservoirs of methane present in Arctic marine sediments are susceptible to rapid warming, promoting increasing methane emissions. Gas bubbles in the water column can be detected, and flow rates can be quantified using hydroacoustic survey methods, making it possible to monitor spatiotemporal variability. We present methane (CH 4 ) bubble flow rates derived from hydroacoustic data sets acquired during 11 research expeditions to the western Svalbard continental margin (2008–2014).