@article{fdi:010088840,
  title = {{S}eismic imaging of the {N}orthern {A}ndean subduction zone from teleseismic tomography : a torn and fragmented {N}azca slab},
  author = {{R}odriguez, {E}. {E}. and {B}eck, {S}. {L}. and {R}uiz, {M}. and {M}eltzer, {A}. and {P}ortner, {D}. {E}. and {H}ernandez, {S}. and {S}egovia, {M}. and {A}gurto-{D}etzel, {H}. and {C}harvis, {P}hilippe},
  editor = {},
  language = {{ENG}},
  abstract = {{T}he {N}azca-{S}outh {A}merica subduction zone in {E}cuador is characterized by a complicated along-strike geometry as the slab transitions from flat slab subduction in the south, with the {P}eruvian flat slab, to what has been characterized as 'normal' dipping subduction beneath central {E}cuador. {P}late convergence additionally changes south to north as the trench takes on a convex shape. {H}ighly heterogeneous bathymetry at the trench, including the aseismic oceanic {C}arnegie {R}idge ({CR}), and sparse intermediate-depth seismicity has led many to speculate about the behaviour of the downgoing plate at depth. {I}n this study, we present a finite-frequency teleseismic {P}-wave tomography model of the northern {A}ndes beneath {E}cuador and {C}olombia from 90 to 1200 km depth. {O}ur model builds on prior tomography models in {S}outh {A}merica by adding relative traveltime residuals recorded at stations in {E}cuador. {T}he complete data set is comprised of 114 096 relative traveltime residuals from 1133 stations across {S}outh {A}merica, with the added data serving to refine the morphology of the {N}azca slab in the mantle beneath the northern {A}ndes. {O}ur tomography model shows a {N}azca slab with a fragmented along-strike geometry and the first teleseismic images of several proposed slab tears in this region. {A}t the northern edge of the {P}eruvian flat slab in southern {E}cuador, we image a shallow tear at 95-200 km depth that appears to connect mantle flow from beneath the flat slab to the {E}cuadorian {A}rc. {B}eneath central {E}cuador at the latitudes of the {CR}, the {N}azca slab is continuous into the lower mantle. {B}eneath southern {C}olombia, the {M}alpelo {T}ear breaks the {N}azca slab below similar to 200 km depth.},
  keywords = {{S}outh {A}merica ; {S}eismic tomography ; {D}ynamics of lithosphere and mantle ; {S}ubduction zone processes ; {EQUATEUR} ; {PEROU} ; {COLOMBIE} ; {PACIFIQUE} ; {AMERIQUE} {DU} {SUD} ; {ANDES}},
  booktitle = {},
  journal = {{G}eophysical {J}ournal {I}nternational},
  volume = {236},
  numero = {1},
  pages = {593--606},
  ISSN = {0956-540{X}},
  year = {2023},
  DOI = {10.1093/gji/ggad421},
  URL = {https://www.documentation.ird.fr/hor/fdi:010088840},
}