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Investigating Seismicity and Fluid Dynamics Along the Marmara Fault System

This study aims to explore the relationship between fluids and seismic activity in the Sea of Marmara fault system. Key objectives include conducting site surveys before establishing permanent seafloor observatories under the ESONET network. Actions involve the systematic detection of fluid and gas escapes using advanced scientific echo sounders (SIMRAD EK60) mounted on Ifremer's AUV and collecting microbathymetric data. The research will also utilize high-resolution 3D seismic systems to visualize fluid conduits, alongside a year-long monitoring of micro-seismicity, sediment pore pressure, and fluid flow variations using OBSs, piezometers, and flowmeters.

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Investigating Seismicity and Fluid Dynamics Along the Marmara Fault System

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  1. Objectives :1) to study the relationship between fluids and seismicity along the Sea of Marmara fault system ; 2) to carry out site surveys prior to the implementation of permanent seafloor observatories in the Marmara Sea through the ESONET (European Seafloor Observatory Network).

  2. Proposed actions • 1) systematic detection of fluid and gaz escapes using at each site the most modern scientific echo sounder for fishery applications (SIMRAD EK60) mounted on the Ifremer AUV. Microbathymetric data will also be collected together with EK60 data • 2) the fine scale imagery of the fluid conduits up to the sediment surface, at one selected site, using the 3D, High Resolution seismic system available at Ifremer ; • 3) recording (for ~ 1 year) of micro-seismicity, together with sediment pore pressure and fluid flows variations using OBSs, piezometers and flowmeters.

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