Correlated crustal and mantle deformation in the Tauern Window, Eastern Alps

Abstract

While the measurements in the west show a single pattern of anisotropy (NE-SW), those in the east show two different patterns but dominantly NW-SE orientation.

Correlated crustal and mantle deformation in the Tauern Window, Eastern Alps

“…This suggests that this group of fast orientations, which correlate with the surface deformation geometry, is related to the shallower anisotropic structures (as suggested by two-layer modeling, Qorbani et al, 2015) rather than the second group of orientations (blue lines) in this part of TW.…”

“…Figure 2: Background, average shear-wave splitting results (arrows) at broadband stations in the eastern Alps (Bokelmann et al, 2013;Qorbani et al, 2015). The orientation of the lines represents fast axis azimuth (°N) and the length indicates the amount of delay time in seconds.…”

“…The progressively rotating pattern of average anisotropic fast axes is noticeable. The inset is a zoom of the area included in the dashed perimeter, showing the projection at 120 km depth of individual splitting measurements (Qorbani et al, 2015), which were obtained from different teleseismic events at each station in the Tauern By projecting the measurements on the N-S profiles at the west and the east of the Tauern Window region (Fig. S1), two groups of fast orientations can be observed.…”

“…This also con- Correlated crustal and mantle deformation in the Tauern Window, Eastern Alps__________________________________________ Kind, 2006), and for the eastern Alps (Bokelmann et al, 2013;Qorbani et al, 2015). They indicate the geometry of "deep deformation" under the area.…”

“…Here, we show results of individual SKS splitting measurements (Qorbani et al, 2015) by the SC technique from 8 broadband permanent stations located in the Tauern Window region. …”