@article{fdi:010062387,
  title = {{T}he seismic cycle in the area of the 2011 {M}(w)9.0 {T}ohoku-{O}ki earthquake},
  author = {{P}erfettini, {H}ugo and {A}vouac, {J}.{P}.},
  editor = {},
  language = {{ENG}},
  abstract = {{W}e model seismic and aseismic slip on the {J}apan megathrust in the area of the {M}(w)9.0, 2011 {T}ohoku-{O}ki earthquake based on daily time series from 400 {GPS} stations of the {GEONET} network and campaign measurements of six sea floor displacements. {T}he coseismic and postseismic slip distributions are inverted simultaneously using principal component analysis-based inversion method ({PCAIM}). {E}xploring a wide range of boundary conditions and regularization constraints, we found the coseismic slip distribution to be quite compact with a peak slip between 30 and 50 m near the trench. {O}ur model shows deep afterslip fringing the downdip edge of the coseismic rupture but also a dominant zone of shallow afterslip. {A}fterslip over the first 279 days following the main shock represents about 40% of the coseismic moment. {W}e compare the coseismic and postseismic models with an interseismic coupling model derived from inland and sea bottom measurements determined in a self-consistent manner. {A}ssuming that seismic and aseismic slip had to match the long-term slip rate along the megathrust, the recurrence time of {M}w9.0 earthquakes is estimated to 100-300 years, while historical and paleotsunami records suggest a return period more of the order of 1000 years. {T}he discrepancy is smaller if the shallower portion of the megathrust is assumed to produce both aseismic slip, as the afterslip model suggests, and seismic slip during occasional large tsunamigenic earthquakes.},
  keywords = {{JAPON}},
  booktitle = {},
  journal = {{J}ournal of {G}eophysical {R}esearch.{S}olid {E}arth},
  volume = {119},
  numero = {5},
  pages = {4469--4515},
  ISSN = {2169-9313},
  year = {2014},
  DOI = {10.1002/2013jb010697},
  URL = {https://www.documentation.ird.fr/hor/fdi:010062387},
}