TY - GEN
T1 - Estimation of shear wave velocity profiles by the inversion of spatial autocorrelation coefficients
AU - Firtana, K.
AU - Kocaoglu, A.
PY - 2009
Y1 - 2009
N2 - Microtremors are measured and analized by spatial autocorrelation method for determination of shear-wave velocity (Vs) models. In spatial autocorelation method,estimating Vs profiles is a two-stage process. Conventionally, Rayleigh wave phase velocity dispersion data, which are obtained from autocorrelation coefficients, are inverted for the shear wave models. In this study,a more practical (one-stage) scheme is utilized where the SPAC coefficients are directly inverted for the unknown shear-wave velocities. The method is based on a weighted damped-leased squares solution. Stability of inversion is achieved by using differential smoothing approach that provides Vs models in which the velocity differences between adjacent layers are minimized.
AB - Microtremors are measured and analized by spatial autocorrelation method for determination of shear-wave velocity (Vs) models. In spatial autocorelation method,estimating Vs profiles is a two-stage process. Conventionally, Rayleigh wave phase velocity dispersion data, which are obtained from autocorrelation coefficients, are inverted for the shear wave models. In this study,a more practical (one-stage) scheme is utilized where the SPAC coefficients are directly inverted for the unknown shear-wave velocities. The method is based on a weighted damped-leased squares solution. Stability of inversion is achieved by using differential smoothing approach that provides Vs models in which the velocity differences between adjacent layers are minimized.
UR - http://www.scopus.com/inward/record.url?scp=77649091691&partnerID=8YFLogxK
U2 - 10.3997/2214-4609.201400035
DO - 10.3997/2214-4609.201400035
M3 - Conference contribution
AN - SCOPUS:77649091691
SN - 9781615672363
T3 - 71st European Association of Geoscientists and Engineers Conference and Exhibition 2009: Balancing Global Resources. Incorporating SPE EUROPEC 2009
SP - 136
EP - 140
BT - 71st European Association of Geoscientists and Engineers Conference and Exhibition 2009
PB - Society of Petroleum Engineers
T2 - 71st European Association of Geoscientists and Engineers Conference and Exhibition 2009
Y2 - 8 June 2009 through 11 June 2009
ER -