@article{fdi:010053760,
  title = {{M}ultimethod characterization of the {F}rench-{P}yrenean valley of {B}agneres-de-{B}igorre for seismic-hazard evaluation : observations and models},
  author = {{S}ouriau, {A}. and {C}haljub, {E}. and {C}ornou, {C}{\'e}cile and {M}argerin, {L}. and {C}alvet, {M}. and {M}aury, {J}. and {W}athelet, {M}arc and {G}rimaud, {F}. and {P}onsolles, {C}. and {P}equegnat, {C}. and {L}anglais, {M}. and {G}ueguen, {P}.},
  editor = {},
  language = {{ENG}},
  abstract = {{A} narrow rectilinear valley in the {F}rench {P}yrenees, affected in the past by damaging earthquakes, has been chosen as a test site for soil response characterization. {T}he main purpose of this initiative was to compare experimental and numerical approaches. {A} temporary network of 10 stations has been deployed along and across the valley during two years; parallel various experiments have been conducted, in particular ambient noise recording, and seismic profiles with active sources for structure determination at the 10 sites. {C}lassical observables have been measured for site amplification evaluation, such as spectral ratios of horizontal or vertical motions between site and reference stations using direct {S} waves and {S} coda, and spectral ratios between horizontal and vertical ({H}/{V}) motions at single stations using noise and {S}-coda records. {V}ertical shear-velocity profiles at the stations have first been obtained from a joint inversion of {R}ayleigh wave dispersion curves and ellipticity. {T}hey have subsequently been used to model the {H}/{V} spectral ratios of noise data from synthetic seismograms, the {H}/{V} ratio of {S}-coda waves based on equipartition theory, and the 3{D} seismic response of the basin using the spectral element method. {G}eneral good agreement is found between simulations and observations. {T}he 3{D} simulation reveals that topography has a much lower contribution to site effects than sedimentary filling, except at the narrow ridge crests. {W}e find clear evidence of a basin edge effect, with an increase of the amplitude of ground motion at some distance from the edge inside the basin and a decrease immediately at the slope foot.},
  keywords = {},
  booktitle = {},
  journal = {{B}ulletin of the {S}eismological {S}ociety of {A}merica},
  volume = {101},
  numero = {4},
  pages = {1912--1937},
  ISSN = {0037-1106},
  year = {2011},
  DOI = {10.1785/0120100293},
  URL = {https://www.documentation.ird.fr/hor/fdi:010053760},
}