Shear wave velocity structure below the Iberian Peninsula as obtained by a detailed analysis of surface waves

摘要: Abstract A tentative tomography of Iberia based on broadband surface wave data is performed for the first time. In this paper we have complemented a previous study northern half Iberian Peninsula with southern peninsula detailed analysis Rayleigh dispersion. Now present shear velocity contour maps at different subcrustal depths. Quality digital records provided by NARS array been used. Standard techniques, as multiple filtering and time-variable filtering, are employed to efficiently remove higher mode interference improve isolation fundamental from seismograms, thus calculate interstation group velocity. Frequency-domain Wiener deconvolution used determine phase We perform simultaneous inversion dispersion means stochastic inverse operator. The results previously reported region together obtained here 3-D mapping over Peninsula. Lateral variation in five depth intervals chosen agreement theoretical earth models determined joint inversion, displayed lithosphere asthenosphere Iberia.