FN Archimer Export Format
PT J
TI Tectonic and sedimentary controls on widespread gas emissions in the Sea of Marmara: Results from systematic, shipborne multibeam echo sounder water column imaging
BT 
AF DUPRE, Stephanie
   SCALABRIN, Carla
   GRALL, Celine
   AUGUSTIN, Jean-Marie
   HENRY, Pierre
   SENGOR, A. M. Celal
   GOERUER, Naci
   CAGATAY, M. Namik
   GELI, Louis
AS 1:1;2:1;3:1,2;4:1;5:2;6:3;7:3;8:3;9:1;
FF 1:PDG-REM-GM-LGG;2:PDG-REM-GM-LGG;3:;4:PDG-IMN-NSE-AS;5:;6:;7:;8:;9:PDG-REM-GM-LGG;
C1 IFREMER, Marine Geosci, Plouzane, France.
   Univ Aix Marseille, CNRS, CEREGE, Marseille, France.
   Istanbul Tech Univ, Fac Min, TR-80626 Istanbul, Turkey.
C2 IFREMER, FRANCE
   UNIV AIX MARSEILLE, FRANCE
   UNIV TECH ISTANBUL, TURKEY
   CNRS, FRANCE
SI BREST
SE PDG-REM-GM-LGG
   PDG-IMN-NSE-AS
IN WOS Ifremer jusqu'en 2018
   copubli-france
   copubli-univ-france
   copubli-int-hors-europe
   copubli-sud
IF 3.318
TC 72
UR https://archimer.ifremer.fr/doc/00268/37972/36049.pdf
LA English
DT Article
CR MARMARA
   MARMARASCARPS
   MARMESONET
   MARNAUT
   MARSITECRUISE
BO Le Suroît
   L'Atalante
   Pourquoi pas ?
DE ;fluid emissions;gas;water column acoustics;multibeam echo sounder;Sea of Marmara;tectonics
AB Understanding of the evolution of fluid-fault interactions during earthquake cycles is a challenge that acoustic gas emission studies can contribute. A survey of the Sea of Marmara using a shipborne, multibeam echo sounder, with water column records, provided an accurate spatial distribution of offshore seeps. Gas emissions are spatially controlled by a combination of factors, including fault and fracture networks in connection to the Main Marmara Fault system and inherited faults, the nature and thickness of sediments (e.g., occurrence of impermeable or gas-bearing sediments and landslides), and the connectivity between the seafloor and gas sources, particularly in relation to the Eocene Thrace Basin. The relationship between seepage and fault activity is not linear, as active faults do not necessarily conduct gas, and scarps corresponding to deactivated fault strands may continue to channel fluids. Within sedimentary basins, gas is not expelled at the seafloor unless faulting, deformation, or erosional processes affect the sediments. On topographic highs, gas flares occur along the main fault scarps but are also associated with sediment deformation. The occurrence of gas emissions appears to be correlated with the distribution of microseismicity. The relative absence of earthquake-induced ground shaking along parts of the Istanbul-Silivri and Princes Islands segments is likely the primary factor responsible for the comparative lack of gas emissions along these fault segments. The spatiotemporal distribution of gas seeps may thus provide a complementary way to constrain earthquake geohazards by focusing the study on some key fault segments, e.g., the northern part of the locked Princes Islands segment.
PY 2015
PD MAY
SO Journal Of Geophysical Research-solid Earth
SN 0148-0227
PU Amer Geophysical Union
VL 120
IS 5
UT 000356454500005
BP 2891
EP 2912
DI 10.1002/2014JB011617
ID 37972
ER

EF