@article{fdi:010049739,
  title = {{A}n extended {MSPAC} method in circular arrays},
  author = {{S}habani, {E}. and {B}ard, {P}. {Y}. and {M}irzaei, {N}. and {E}skandari-{G}hadi, {M}. and {C}ornou, {C}{\'e}cile and {H}aghshenas, {E}.},
  editor = {},
  language = {{ENG}},
  abstract = {{T}he microtremor seismic method using spatial autocorrelation ({SPAC}) processing is a useful tool for estimating the structure of subsurface layers and the shear wave velocities of sediments. {T}his paper improves upon the well-known '{M}odified {SPAC}' ({MSPAC}) method, which extends the {SPAC} formulae for discrete and nearly continuous circular arrays to handle arrays with regular and irregular azimuthal spacing. {F}or finite circular arrays, extended {MSPAC} ({EMSPAC}) also takes into account the discrete character of the array, which has been inspired by the works of {O}kada. {A}lso a new {SPAC} coefficient is proposed for a nearly continuous array. {EMSPAC} is applied to real data collected using a seven-station array, and its averaged {SPAC} coefficients and dispersion curves are compared to those obtained using {MSPAC}.},
  keywords = {{S}patial analysis ; {S}urface waves and free oscillations ; {S}ite effects},
  booktitle = {},
  journal = {{G}eophysical {J}ournal {I}nternational},
  volume = {182},
  numero = {3},
  pages = {1431--1437},
  ISSN = {0956-540{X}},
  year = {2010},
  DOI = {10.1111/j.1365-246{X}.2010.04687.x},
  URL = {https://www.documentation.ird.fr/hor/fdi:010049739},
}