Elastic fault interactions and earthquake rupture along the southern hellenic subduction plate interface zone in GreeceElastic fault interactions and earthquake rupture along the southern hellenic subduction plate interface zone in Greece Peer-Reviewed Journal Publication Δημοσίευση σε Περιοδικό με Κριτές 2021-07-062020enThe importance of splay-thrust faults in subduction seismogenesis is increasingly acknowledged; however, their elastic interaction with the plate interface remains unclear. Here, we use GPS velocities, constrained by millennial fault slip rates, to study elastic fault-interactions between the plate interface and its upper-plate splay-thrust faults from the southern Hellenic Subduction System (HSS). We find that, despite its largely aseismic character, the HSS plate interface zone is kinematically segmented, with slip rate deficits locally reaching ~85% and ~45% of the plate convergence rate on the western and eastern segments, respectively, and on structures different from those that ruptured historically. Although western Crete has been more active seismically during late Holocene, we find that the eastern HSS has higher seismic potential for large-magnitude (M > 6) earthquakes and its interface zone is closer to failure. Elastic fault interactions are responsible for both significant intersegment variability in strain accumulation and uniformity in earthquake rupture segmentation along the HSS over millennial timescales.http://creativecommons.org/licenses/by-nc-nd/4.0/Geophysical Research Letters4713Saltogianni_et_al_Geophys. Res. Lett._47(13)_2020.pdfChania [Greece]Library of TUC2021-07-05application/pdf3.8 MBfree Saltogianni Vasso Mouslopoulou, Vasiliki Oncken, Onno, 1955- Nicol Andrew Gianniou, Michail 1970- Mertikas Stylianos Μερτικας Στυλιανος American Geophysical Union Subduction seismogenesis Global Positioning System (GPS) Locking degree Fault interactions Earthquake rupture segmentation