Shear wave crustal velocity model of the Western Bohemian Massif fromLove wave phase velocity dispersion
Abstract
We propose a new quantitative determination of shear wave velocities fordistinct geological units in the Bohemian Massif, Czech Republic (Central Europe). The phase velocities of fundamental Love wave modes are measured along two long profiles (similar to 200 km) crossing three major geological units and one rift-like structure of the studied region.
We have developed a modified version of the classical multiple filtering technique for the frequency-time analysis and we apply it to two-station phase velocity estimation. Tests of both the analysis and inversion are provided.
Seismograms of three Aegean Sea earthquakes are analyzed. One of the two profiles is further divided into four shorter sub-profiles.
The long profiles yield smooth dispersion curves; while the curves of the sub-profiles have complicated shapes.