We perform receiver function analysis to determine a detailed map of the crust-mantle
boundary and the crustal velocity structure of the transition zone between the Eastern
Alps and the Carpathian Basin. We use data from the AlpArray temporary seismic network,
the permanent stations of the Hungarian National Seismological network, stations of
a private network operated by Georisk Ltd., temporary stations of the Carpathian Basin
and South Carpathian Basin Projects, as well as permanent seismological stations in
the neighbouring countries for the time period between 2002 and 2017. Altogether about
200 seismological stations are used in the analysis. Owing to the dense station coverage
we can achieve so far unprecedented resolution, thus extending our previous work on
the region. We apply three different quality assurance procedures for the waveforms
and the obtained receiver functions. Receiver functions are calculated by the iterative
time domain deconvolution approach. We present the quality controlled P receiver functions
(radial and transversal component) and we will investigate the transverse components
for back-azimuthal patterns that may point to anisotropy or dipping interfaces. We
show some cross-sections beneath the Eastern Alps – Pannonian Basin transition zone,
and concentrate on major structural elements of the area such as Mid-Hungarian Zone
and Balaton Line. Finally, we present results on the Moho map obtained by H-K analysis.
We also compare our results to previous active and passive seismological images in
terms of Moho depth and crustal velocities.
