Gas emissions from the Sea of Marmara seafloor from 4 November to 14 December 2009 (S. Dupré, 2015)

Spatial distribution of gaz emissions on Marmara Sea, established from acoustic water column data, acquired in 2009 during the MARMESONET marine expedition. The present dataset is a polygon shapefile. This seafloor surface represents the insonified area within which gas emissions occurred for more than 1 month of survey, from 4 November 2009 to 14 December 2009; as displayed in Figure 4 of the publication cited below "Tectonic and sedimentary controls for widespread gas emissions in the Sea of Marmara. Results from systematic, shipborne multibeam echosounder water column imageries." This publication investigated and discussed the relationship between fluid emissions at the seafloor with the fault network (active and inactive faults) and the sedimentary environment (nature, thickness and related-processes). Oceanographic cruise at the source of the dataset :

• GELI Louis, HENRY Pierre, CAGATAY Namik (2009) MARMESONET cruise, RV Le Suroît, https://doi.org/10.17600/9020040 Bibliographic reference :
• Dupre Stephanie, Scalabrin Carla, Grall Celine, Augustin Jean-Marie, Henry Pierre, Sengor A. M. Celal, Goeruer Naci, Cagatay M. Namik, Geli Louis (2015). Tectonic and sedimentary controls on widespread gas emissions in the Sea of Marmara: Results from systematic, shipborne multibeam echo sounder water column imaging. Journal Of Geophysical Research-solid Earth, 120(5), 2891-2912. Publisher's official version : https://doi.org/10.1002/2014JB011617 , Open Access version : https://archimer.ifremer.fr/doc/00268/37972/