@article{fdi:010066826,
  title = {{P}otential slab deformation and plunge prior to the {T}ohoku, {I}quique and {M}aule earthquakes},
  author = {{B}ouchon, {M}. and {M}arsan, {D}. and {D}urand, {V}. and {C}ampillo, {M}. and {P}erfettini, {H}ugo and {M}adariaga, {R}. and {G}ardonio, {B}.},
  editor = {},
  language = {{ENG}},
  abstract = {{M}egathrust earthquakes rupture hundreds of kilometres of the shallow plate interface in subduction zones, typically at depths of less than 50 km. {I}ntense foreshock activity preceded the 2011 {M}-w 9 {T}ohoku-oki ({J}apan) and 2014 {M}-w 8.2 {I}quique ({C}hile) megathrust earthquakes. {T}his pre-earthquake activity was thought to be generated(1-6) by slow slip in the seismogenic zone before rupture, but where this slow slip originated and how it spread rapidly over long distances are unknown. {H}ere we analyse seismic activity deep in the subduction zone before the {T}ohoku-oki and {I}quique ruptures, as well as before the 2010 {M}-w 8.8 {M}aule earthquake in {C}hile. {W}e find that, before each of these megathrust earthquakes, shallow seismicity occurred synchronously with bursts of seismic activity deep (similar to 100 km) in the subducting slab. {T}he extensional mechanism of these deep shocks suggests that the slab was stretched at depth. {W}e therefore propose that, before these megathrust quakes, the slab might have started to plunge into the mantle below part of the future rupture zone. {W}e speculate that synchronization between deep and shallow seismicity may have marked the nucleation phase for these three giant earthquakes.},
  keywords = {{JAPON} ; {CHILI}},
  booktitle = {},
  journal = {{N}ature {G}eoscience},
  volume = {9},
  numero = {5},
  pages = {380--383 + 1 p.},
  ISSN = {1752-0894},
  year = {2016},
  DOI = {10.1038/ngeo2701},
  URL = {https://www.documentation.ird.fr/hor/fdi:010066826},
}