Marmara EMSO-fr workshop

The Marmara Site of EMSO-France Research Infrastructure (https://www.emso- fr.org/EMSO-MARMARA) is organising a workshop in Marseille 7-8-9 September 2022 to exchange on monitoring projects in the Sea of Marmara with the objective to propose a roadmap for future activities in the EMSO ERIC framework. Over the past 15 years, seismotectonics and hazard assessment for Istanbul (earthquakes, mass wasting, tsunamis) have been the primary motivations for the deployments of autonomous instruments in the Sea of Marmara within the European frameworks of ESONET et EMSO. Notably, the Sea of Marmara has been a landmark test site for the monitoring of faults with seafloor acoustic ranging methods. The purpose of the EMSO-Fr Marmara workshop is to open the Marmara site to new scientific objectives, notably in oceanography, and to new or recently developed monitoring methods. Here is a preliminary list of topics for inclusion at the workshop 1) Environmental (water column) monitoring in the Sea of Marmara The Sea of Marmara is located in the Mediterannean/Black Sea gateway, resulting in specific conditions (haline stratification, low oxygen deep water body) and processes (counter flow system, internal waves, layer-confined cascading), and in a high sensitivity to climate change. Moreover, monitoring of sediment transport processes and of fluid emissions into the water column are challenging objectives with implications for geohazard studies. 2) Innovative approaches of offshore fault monitoring -Piezometers as strain indicators -Absolute pressure measurements for geodesy -Acoustic geodesy and GNSS/acoustic -Optical fibers (DAS, DSTS) -Improving earthquake relocation -Non-conventional use of OBSs (e.g. Short duration events) 3) Technical solutions and data integration -Monitoring from space (e.g. fluid emissions with SAR) -Using available infrastructure (e.g. fiber optics) -Long term autonomous systems with periodic data transmission (e.g. MUG, MERMAID) -Marine/land data integration (GPS, seismological networks, borehole strain meters)