@article{fdi:010064204,
  title = {{N}umerical modeling of long-term earthquake sequences on the {NE} {J}apan megathrust : comparison with observations and implications for fault friction},
  author = {{C}ubas, {N}. and {L}apusta, {N}. and {A}vouac, {J}. {P}. and {P}erfettini, {H}ugo},
  editor = {},
  language = {{ENG}},
  abstract = {{W}e use numerical modeling to investigate fault properties that explain key features of the 2011 {M}w 9.0 {T}ohoku-{O}ki earthquake as well as the overall regional behavior of the {NE} {J}apan megathrust {I}n particular, we study the possibility that slip near the trench resulted from thermal pressurization on a shallow patch of the megathrust, and investigate whether low-velocity friction on that patch is rate-strengthening or rate-weakening. {O}ur models also contain a deeper rate-weakening patch, not prone to efficient thermal pressurization, to account for the moderate-sized interplate seismicity. {W}e produce earthquake sequences and aseismic slip in our models using 2{D} dynamic simulations that incorporate shear-induced temperature variations and the associated change in pore fluid pressure to capture thermal pressurization. {W}e find that all our models can reproduce more frequent deeper moderate ({M}w 7.5) events and less frequent larger events with substantial slip at shallow depth, as observed along the {F}ukushima-{M}iyagi segment of the {J}apan megathrust. {H}owever, only the scenario with a sufficiently rate-strengthening patch can match the thousand-year recurrence time of {T}ohoku-{O}ki-like earthquakes suggested by the historical and geological record, due to co-existence of seismic and aseismic slip at the shallow depths. {T}his scenario also reproduces other characteristics of the {T}ohoku-{O}ki earthquake: the trenchward-skewed distribution of slip, the backward re-rupture of the deeper patch, as well as the weaker radiation at high frequency of the shallower portion of the rupture in spite of its larger slip.},
  keywords = {{T}ohoku-{O}ki earthquake ; thermal pressurization ; shallow propagation ; 2{D} ; dynamic simulations of earthquake cycle ; {JAPON}},
  booktitle = {},
  journal = {{E}arth and {P}lanetary {S}cience {L}etters},
  volume = {419},
  numero = {},
  pages = {187--198},
  ISSN = {0012-821{X}},
  year = {2015},
  DOI = {10.1016/j.eps1.2015.03.002},
  URL = {https://www.documentation.ird.fr/hor/fdi:010064204},
}