Identification of transtensional and transpressional features in the Sea of Marmara using onshore-offshore seismic and geodetic data

The scope of the study is to determine transtensional and transpressional features along North Anatolian Fault beneath Sea Marmara, using seismic geodetic data. For this purpose, focal mechanisms small size NAF earthquakes, recorded by broadband stations OBSs, have been derived used as a tool identify features. of: (1) moderate events are obtained CMT inversion technique Kuge (2003), onshore waveform data from 2002?2015, (2) micro-earthquakes Horiuchi (2015), offshore 15 OBS 2015?2016. Furthermore, published GPS velocities style faulting strain rates. horizontal crustal rates determined at equally spaced grid points interpolating northing easting components 112 vectors 1994?2013. results indicate that extensional strike-slip deformation dominates region, while contractional rare. Significant extension observed in Çınarcık Basin area between Marmara Island Central Basin. Yalova-Çınarcık region shows predominantly N-S show NE-SW extension. Compressional or west Ganos segment extending toward rate point out highest values, 24 × 10?8/year, Basin, lowest 11 Marmara. both edges fault can be indicative steadily creeping segment. In turn, lower suggest locked.