@article{fdi:010077127,
  title = {{S}eismic and aseismic fault growth lead to different fault orientations},
  author = {{P}reuss, {S}. and {H}errendorfer, {R}. and {G}erya, {T}. and {A}mpuero, {J}ean-{P}aul and van {D}inther, {Y}.},
  editor = {},
  language = {{ENG}},
  abstract = {{O}rientations of natural fault systems are subject to large variations. {T}hey often contradict classical {C}oulomb failure theory as they are misoriented relative to the regional {A}ndersonian stress field. {T}his is ascribed to local effects of structural or stress heterogeneities and reorientations of structures or stresses on the long term. {T}o better understand the relation between fault orientation and regional stresses, we simulate spontaneous fault growth and its effect on the stress field. {O}ur approach incorporates earthquake rupture dynamics, viscoelastoplastic brittle deformation and a rate- and state-dependent friction formulation in a continuum mechanics framework. {W}e investigate how strike-slip faults orient according to local and far-field stresses during their growth. {W}e identify two modes of fault growth, seismic and aseismic, distinguished by different fault angles and slip velocities. {S}eismic fault growth causes a significant elevation of dynamic stresses and friction values ahead of the propagating fault tip. {T}hese elevated quantities result in a greater strike angle relative to the maximum principal regional stress than that of a fault segment formed aseismically. {W}hen compared to the near-tip time-dependent stress field the fault orientations produced by both growth modes follow the classical failure theory. {W}e demonstrate how the two types of fault growth may be distinguished in natural faults by comparing their angles relative to the original regional maximum principal stress. {A} stress field analysis of the {L}anders-{K}ickapoo fault suggests that an angle greater than similar to 25 degrees between two faults indicates seismic fault growth.},
  keywords = {seismic and aseismic fault growth ; {A}ndersonian and {C}oulomb faulting ; fault angle ; numerical continuum mechanics modeling ; rate- and ; state-dependent friction ; earthquake rupture dynamics},
  booktitle = {},
  journal = {{J}ournal of {G}eophysical {R}esearch : {S}olid {E}arth},
  volume = {124},
  numero = {8},
  pages = {8867--8889},
  ISSN = {2169-9313},
  year = {2019},
  DOI = {10.1029/2019jb017324},
  URL = {https://www.documentation.ird.fr/hor/fdi:010077127},
}