@article{fdi:010074391,
  title = {{M}ultidisciplinary investigation on cold seeps with vigorous gas emissions in the {S}ea of {M}armara ({M}arsite{C}ruise) : strategy for site detection and sampling and first scientific outcome},
  author = {{R}uffine, {L}. and {O}ndreas, {H}. and {B}lanc-{V}alleron, {M}. {M}. and {T}eichert, {B}. {M}. {A}. and {S}calabrin, {C}. and {R}innert, {E}. and {B}irot, {D}. and {C}roguennec, {C}. and {P}onzevera, {E}. and {P}ierre, {C}. and {D}onval, {J}. {P}. and {A}lix, {A}. {S}. and {G}ermain, {Y}. and {B}ignon, {L}. and {E}toubleau, {J}. and {C}aprais, {J}. {C}. and {K}noery, {J}. and {L}esongeur, {F}. and {T}homas, {B}. and {R}oubi, {A}. and {L}egoix, {L}. {N}. and {B}urnard, {P}. and {C}hevalier, {N}. and {L}u, {H}. {L}. and {D}upre, {S}. and {F}ontanier, {C}. and {D}issard, {D}elphine and {O}lgun, {N}. and {Y}ang, {H}. {L}. and {S}trauss, {H}. and {O}zaksoy, {V}. and {P}erchoc, {J}. and {P}odeur, {C}. and {T}arditi, {C}. and {O}zbeki, {E}. and {G}uyader, {V}. and {M}arty, {B}. and {M}adre, {D}. and {P}itel-{R}oudaut, {M}. and {G}rall, {C}. and {E}mbriaco, {D}. and {P}olonia, {M}. and {G}asperini, {L}. and {C}agatay, {M}. {N}. and {H}enry, {P}. and {G}eli, {L}.},
  editor = {},
  language = {{ENG}},
  abstract = {{M}arsite{C}ruise was undertaken in {O}ctober/{N}ovember 2014 in the {S}ea of {M}armara to gain detailed insight into the fate of fluids migrating within the sedimentary column and partially released into the water column. {T}he overall objective of the project was to achieve a more global understanding of cold-seep dynamics in the context of a major active strike-slip fault. {F}ive remotely operated vehicle ({ROV}) dives were performed at selected areas along the {N}orth {A}natolian {F}ault and inherited faults. {T}o efficiently detect, select and sample the gas seeps, we applied an original procedure. {I}t combines sequentially (1) the acquisition of ship-borne multibeam acoustic data from the water column prior to each dive to detect gas emission sites and to design the tracks of the {ROV} dives, (2) in situ and real-time {R}aman spectroscopy analysis of the gas stream, and (3) onboard determination of molecular and isotopic compositions of the collected gas bubbles. {T}he in situ {R}aman spectroscopy was used as a decision-making tool to evaluate the need for continuing with the sampling of gases from the discovered seep, or to move to another one. {P}ush cores were gathered to study buried carbonates and pore waters at the surficial sediment, while {CTD}-{R}osette allowed collecting samples to measure dissolved-methane concentration within the water column followed by a comparison with measurements from samples collected with the submersible {N}autile during the {M}arnaut cruise in 2007. {O}verall, the visited sites were characterized by a wide diversity of seeps. {CO}2- and oil-rich seeps were found at the westernmost part of the sea in the {T}ekirdag {B}asin, while amphipods, anemones and coral populated the sites visited at the easternmost part in the {C}inarcik {B}asin. {M}ethane-derived authigenic carbonates and bacterial mats were widespread on the seafloor at all sites with variable size and distributions. {T}he measured methane concentrations in the water column were up to 377 mu mol, and the dissolved pore-water profiles indicated the occurrence of sulfate depleting processes accompanied with carbonate precipitation. {T}he pore-water profiles display evidence of biogeochemical transformations leading to the fast depletion of seawater sulfate within the first 25-cm depth of the sediment. {T}hese results show that the {N}orth {A}natolian {F}ault and inherited faults are important migration paths for fluids for which a significant part is discharged into the water column, contributing to the increase of methane concentration at the bottom seawater and favoring the development of specific ecosystems.},
  keywords = {{A}coustic survey ; {A}uthigenic carbonates ; {B}iogeochemistry ; {C}hemical analyses ; {C}old seeps ; {D}issolved major elements ; {F}luid seepage ; {G}eology ; {I}n situ {R}aman analysis ; {M}ethane ; {ROV} dives ; {TURQUIE} ; {MARMARA} {MER}},
  booktitle = {{F}luids and geochemical processes at the seismically active fault zone in the {S}ea of {M}armara},
  journal = {{D}eep-{S}ea {R}esearch {P}art {II} : {T}opical {S}tudies in {O}ceanography},
  volume = {153},
  numero = {{N}o sp{\'e}cial},
  pages = {36--47},
  ISSN = {0967-0645},
  year = {2018},
  DOI = {10.1016/j.dsr2.2018.03.006},
  URL = {https://www.documentation.ird.fr/hor/fdi:010074391},
}