@article{fdi:010061729,
  title = {{I}ntense interface seismicity triggered by a shallow slow slip event in the {C}entral {E}cuador subduction zone},
  author = {{V}all{\'e}e, {M}artin and {N}ocquet, {J}ean-{M}athieu and {B}attaglia, {J}. and {F}ont, {Y}vonne and {S}egovia, {M}. and {R}{\'e}gnier, {M}arc and {M}othes, {P}. and {J}arrin, {P}. and {C}isneros, {D}. and {V}aca, {S}. and {Y}epes, {H}. and {M}artin, {X}avier and {B}ethoux, {N}. and {C}hlieh, {M}ohamed},
  editor = {},
  language = {{ENG}},
  abstract = {{W}e document a 1week long slow slip event ({SSE}) with an equivalent moment magnitude of 6.0-6.3 which occurred in {A}ugust 2010 below {L}a {P}lata {I}sland ({E}cuador), south of the rupture area of the 1906 {M}w=8.8 megathrust earthquake. {GPS} data reveal that the {SSE} occurred at a depth of about 10km, within the downdip part of a shallow (<15km), isolated, locked patch along the subduction interface. {T}he availability of both broadband seismometer and continuous geodetic station located at the {L}a {P}lata {I}sland, 10km above the {SSE}, enables a careful analysis of the relationships between slow and rapid processes of stress release along the subduction interface. {D}uring the slow slip sequence, the seismic data show a sharp increase of the local seismicity, with more than 650 earthquakes detected, among which 50 have a moment magnitude between 1.8 and 4.1. {H}owever, the cumulative moment released through earthquakes accounts, at most, for 0.2% of the total moment release estimated from {GPS} displacements. {M}ost of the largest earthquakes are located along or very close to the subduction interface with focal mechanism consistent with the relative plate motion. {W}hile the earthquake sizes show a classical distribution ({G}utenberg-{R}ichter law with a b-value close to 1), the space-time occurrence presents a specific pattern. {F}irst, the largest earthquakes appear to occur randomly during the slow slip sequence, which further evidence that the seismicity is driven by the stress fluctuations related to aseismic slip. {M}oreover, the seismicity observed during the {SSE} consists in individual events and families of repeating earthquakes. {T}hese observations indicate that the stress increment induced by the episodic aseismic slip may lead both to sudden seismic moment release and to progressive rupture within small locked patches. {T}his study offers an a posteriori interpretation of the seismogenesis in the {C}entral {E}cuador subduction zone, where intense seismic swarms have been regularly observed (1977, 1998, 2002, and 2005). {T}hese swarms have likely been triggered by large-magnitude slow slip events.},
  keywords = {slow slip event ; subduction interface ; seismic swarm ; microseismicity ; seismic cycle ; {EQUATEUR} ; {ANDES}},
  booktitle = {},
  journal = {{J}ournal of {G}eophysical {R}esearch. {S}olid {E}arth},
  volume = {118},
  numero = {6},
  pages = {2965--2981},
  ISSN = {2169-9313},
  year = {2013},
  DOI = {10.1002/jgrb.50216},
  URL = {https://www.documentation.ird.fr/hor/fdi:010061729},
}