Bénédicte Ferré

TL;DR: Evidence is presented that hydrates play a role in the observed seepage of gas, but it is confirmed that seepages off Svalbard has been ongoing for at least 3000 years and that seasonal fluctuations of 1° to 2°C in the bottom-water temperature cause periodic gas hydrate formation and dissociation, which focus seeping at the observed sites.

TL;DR: A dedicated trawling experiment was performed at three sites on the Gulf of Lion continental shelf, with the aim of assessing the resuspension of particulate and dissolved matter triggered by different types of trawls on muddy sediments as discussed by the authors.

TL;DR: In this paper, the authors report repeated measurements of methanotrophic activity and community size at methane seeps west of Svalbard, and relate them to physical watermass properties and modelled ocean currents.

TL;DR: In this paper, the impact of bottom trawling on fine sediment resuspension per unit surface is comparable with that of the largest storms on the Gulf of Lion shelf, and the authors conducted a 16-month period (January 1998-April 1999) to characterise the seasonal variability.

TL;DR: In this article, the authors find that summer methane (CH4) release from seabed sediments west of Svalbard substantially increases CH4 concentrations in the ocean but has limited influence on the atmospheric CH4 levels.