@article{fdi:010070377,
  title = {{C}hange in seismicity along the {J}apan trench, 1990-2011, and its relationship with seismic coupling},
  author = {{M}arsan, {D}. and {B}ouchon, {M}. and {G}ardonio, {B}. and {P}erfettini, {H}ugo and {S}ocquet, {A}. and {E}nescu, {B}.},
  editor = {},
  language = {{ENG}},
  abstract = {{W}e investigate the temporal evolution of the background seismicity rate related to the subduction of the {P}acific plate in northeast {J}apan, at latitudes 34 degrees to 42 degrees, for the 1 {J}anuary 1990 to 9 {M}arch 2011 period. {T}wo declustering methods are used to identify robust features. {W}e find that the dominant behavior is a lowering down of activity, especially in the northern half of our studied area, where changes appear related to the cycle of {M}7.5+ earthquakes, in particular the 1968 {T}okachi and the 1994 {S}anriku earthquakes. {A}cceleration of background seismicity is observed offshore the {K}anto region and could mark a long-term decoupling of the {P}acific and the {P}hilippine {S}ea plates over a 100km long segment along the {S}agimi {T}rough, which cannot be simply explained by the earthquake cycle model. {O}ur analysis further suggests that changes in background seismicity are plausibly related to changes in seismic coupling and thus further strengthens the recent observation that seismic coupling does vary at the timescales of tens of years, for the {J}apanese subduction zone.},
  keywords = {earthquake ; subduction ; {PACIFIQUE} ; {JAPON} ; {PHILIPPINES} {MER}},
  booktitle = {},
  journal = {{J}ournal of {G}eophysical {R}esearch : {S}olid {E}arth},
  volume = {122},
  numero = {6},
  pages = {4645--4659},
  ISSN = {2169-9313},
  year = {2017},
  DOI = {10.1002/2016jb013715},
  URL = {https://www.documentation.ird.fr/hor/fdi:010070377},
}