@article{fdi:010068301,
  title = {{A}nalysis of seismic waves crossing the {S}anta {C}lara {V}alley using the three-component {MUSIQUE} array algorithm},
  author = {{H}obiger, {M}. and {C}ornou, {C}{\'e}cile and {B}ard, {P}. {Y}. and {L}e {B}ihan, {N}. and {I}mperatori, {W}.},
  editor = {},
  language = {{ENG}},
  abstract = {{W}e introduce the {MUSIQUE} algorithm and apply it to seismic wavefield recordings in {C}alifornia. {T}he algorithm is designed to analyse seismic signals recorded by arrays of three-component seismic sensors. {I}t is based on the {MUSIC} and the quaternion-{MUSIC} algorithms. {I}n a first step, the {MUSIC} algorithm is applied in order to estimate the backazimuth and velocity of incident seismic waves and to discriminate between {L}ove and possible {R}ayleigh waves. {I}n a second step, the polarization parameters of possible {R}ayleigh waves are analysed using quaternion-{MUSIC}, distinguishing retrograde and prograde {R}ayleigh waves and determining their ellipticity. {I}n this study, we apply the {MUSIQUE} algorithm to seismic wavefield recordings of the {S}an {J}ose {D}ense {S}eismic {A}rray. {T}his array has been installed in 1999 in the {E}vergreen {B}asin, a sedimentary basin in the {E}astern {S}anta {C}lara {V}alley. {T}he analysis includes 22 regional earthquakes with epicentres between 40 and 600 km distant from the array and covering different backazimuths with respect to the array. {T}he azimuthal distribution and the energy partition of the different surface wave types are analysed. {L}ove waves dominate the wavefield for the vast majority of the events. {F}or close events in the north, the wavefield is dominated by the first harmonic mode of {L}ove waves, for farther events, the fundamental mode dominates. {T}he energy distribution is different for earthquakes occurring northwest and southeast of the array. {I}n both cases, the waves crossing the array are mostly arriving from the respective hemicycle. {H}owever, scattered {L}ove waves arriving from the south can be seen for all earthquakes. {C}ombining the information of all events, it is possible to retrieve the {L}ove wave dispersion curves of the fundamental and the first harmonic mode. {T}he particle motion of the fundamental mode of {R}ayleigh waves is retrograde and for the first harmonic mode, it is prograde. {F}or both modes, we can also retrieve dispersion and ellipticity curves. {W}ave motion simulations for two earthquakes are in good agreement with the real data results and confirm the identification of the wave scattering formations to the south of the array, which generate the scattered {L}ove waves visible for all earthquakes.},
  keywords = {{E}arthquake ground motions ; {S}urface waves and free oscillations ; {S}ite effects ; {W}ave scattering and diffraction ; {ETATS} {UNIS} ; {CALIFORNIE}},
  booktitle = {},
  journal = {{G}eophysical {J}ournal {I}nternational},
  volume = {207},
  numero = {1},
  pages = {439--456},
  ISSN = {0956-540{X}},
  year = {2016},
  DOI = {10.1093/gji/ggw289},
  URL = {https://www.documentation.ird.fr/hor/fdi:010068301},
}