@article{fdi:010088936,
  title = {{D}iverse slip behaviour of velocity-weakening fault barriers},
  author = {{M}olina-{O}rmazabal, {D}. and {A}mpuero, {J}ean-{P}aul and {T}assara, {A}.},
  editor = {},
  language = {{ENG}},
  abstract = {{S}eismic barriers are fault portions that promote earthquake rupture arrest and fault segmentation. {D}espite their fundamental role in controlling the maximum magnitude of earthquakes, the nature of seismic barriers is still uncertain. {A} common interpretation of barriers as having velocity-strengthening friction-steady-state friction that increases with increasing slip velocity-is only partially consistent with the thermal control of friction observed in laboratory experiments, which implies that most relevant materials in subduction channels are velocity-weakening at seismogenic depths. {H}ere we examine the possibility of velocity-weakening barriers by conducting earthquake cycle simulations along a velocity-weakening megathrust segmented by lateral variations of frictional properties and normal stress. {W}e show that velocity-weakening fault segments display a wide range of behaviours, including permanent barrier behaviour. {T}hey can be locked during long periods and release their slip deficit either seismically or aseismically. {W}e quantify the efficiency of velocity-weakening barriers in arresting ruptures using a non-dimensional parameter based on fracture mechanics theory that can be constrained by observations on natural faults. {O}ur results provide a theoretical framework that could improve physics-based seismic hazard assessment. {V}elocity-weakening seismic barriers in subduction zones display a range of behaviours consistent with geologic structural control on earthquake seismicity, according to earthquake cycle simulations along a megathrust.},
  keywords = {},
  booktitle = {},
  journal = {{N}ature {G}eoscience},
  volume = {[{E}arly access]},
  numero = {},
  pages = {[20 p.]},
  ISSN = {1752-0894},
  year = {2023},
  DOI = {10.1038/s41561-023-01312-1},
  URL = {https://www.documentation.ird.fr/hor/fdi:010088936},
}