@article{PAR00001318, title = {{T}arapaca intermediate-depth earthquake ({M}w 7.7, 2005, northern {C}hile): {A} slab-pull event with horizontal fault plane constrained from seismologic and geodetic observations - art. no. {L}22308}, author = {{P}eyrat, {S}. and {C}ampos, {J}. and {C}habalier de, {J}. {B}. and {P}erez, {A}. and {B}onvalot, {S}ylvain and {B}ouin, {M}. {P}. and {L}egrand, {D}. and {N}ercessian, {A}. and {C}harade, {O}. and {P}atau, {G}. and {C}levede, {E}. and {K}ausel, {E}. and {B}ernard, {P}. and {V}ilotte, {J}. {P}.}, editor = {}, language = {{ENG}}, abstract = {{A} large ({M}w 7.7) intermediate-depth earthquake occurred on 13 {J}une 2005 in the {T}arapaca region of the northern {C}hile seismic gap. {S}ource parameters are inferred from teleseismic broadbands, strong motions, {GPS} and {I}n{SAR} data. {R}elocated hypocenter is found at similar to 98 km depth within the subducting slab. {T}he 21-days aftershock distribution, constrained by a postseismic temporary array, indicates a sub-horizontal fault plane lying between the planes of the double seismic zone and an upper bound of the rupture area of 60 km x 30 km. {T}eleseismic inversion shows a slab-pull down dip extension mechanism on a nearly horizontal plane. {T}otal seismic and geodetic moments are similar to 5.5 x 10(20) {N}. m, with an averaged slip of 6.5 m from geodesy. {T}he earthquake rupture is peculiar in that the effective velocity is slow, 3.5 {K}m. s(-1) for a high stress-drop, 21 - 30 {MP}a. {W}e propose that rupture was due to the reactivation by hydraulic embrittlement of a inherited major lithospheric fault within the subducting plate. {T}he stress-drop suggests that the region of the slab between planes of the double seismic zone can sustain high stresses.}, keywords = {}, booktitle = {}, journal = {{G}eophysical {R}esearch {L}etters}, volume = {33}, numero = {22}, pages = {{NIL}_19--{NIL}_24}, ISSN = {0094-8276}, year = {2006}, DOI = {10.1029/2006{GL}027710}, URL = {https://www.documentation.ird.fr/hor/{PAR}00001318}, }