Anatolian surface wave evaluated at GEOFON Station ISP Isparta, Turkey

Estimation of the crustal structure in Central Anatolia (Turkey) using receiver functions

“…These are the sedimentary layer, the upper crust, and the lower crust. The low S-wave velocities in the near surface and their increase nearly down to 5 km in depth is clearly seen beneath every station (Figure 6), which is in good agreement with the results of Erduran et al (2007) and Salah et al (2014). This uppermost layer with a low S-wave velocity can be interpreted as Neogene sediments covering the whole surface of the region.…”

Teleseismic inversion of crustal S-wave velocities beneath the Isparta Station

“…The estimated non-unit standard deviations of receiver functions are¯ 2 r = 0.0435 (Stack 1), 0.045 (Stack 2) and 0.040 (Stack 3) as obtained from bounds on the mean of the data stacking procedure for the radial-component receiver function amplitudes. A similar value estimated for the observed dispersion curve is 2 s = 0.090 km s −1 from bounds on the mean of the group velocity curves (Erduran et al, 2007). The number of data points was equalized using N = 301 and K = 34.…”

“…Fundamental mode Rayleigh and Love group velocities were borrowed from a preliminary study by Erduran et al (2007). They used surface waves of 52 shallow earthquakes well recorded at station ISP for the years 1998-2006 and grouped their surface wave observations into four groups according to approach azimuth.…”

“…Average group velocity curves were inverted for 1D crust and uppermost mantle shear velocities to represent the average shear structure under each region. Using the average inverted velocity structure in Erduran et al (2007) we produce theoretical dispersion curves and employ them jointly with the observed receiver function waveforms at station ISP. In general, the surface wave velocities constrain a background velocity structure that represents the geological region containing the seismic station (Ç akır and Erduran, 2003;Julia et al, 2005).…”

“…Ates¸et al, 1996Ates¸et al, , 1999Kalyoncuoglu and Özer, 2003;Gürer et al, 2004a,b;Meier et al, 2004;Dolmaz et al, 2005;Aydın et al, 2005;Zhu et al, 2006;Akyol et al, 2006;Erduran et al, 2007;Dolmaz, 2007;Gürer and Bayrak, 2007;Salah et al, 2007). Here, we employ the joint inversion of teleseismic P receiver functions and surface wave group velocities to improve our knowledge of the crust and uppermost mantle seismic velocity structure beneath the Isparta Angle.…”