S-to-P receiver function analysis in the Alpine-Carpathian-Pannonian system
- 1Kövesligethy Radó Seismological Observatory, Institute of Earth Physics and Space Science, Budapest, Hungary (kalmard@seismology.hu)
- 2National Institute of Earth Physics, Bucharest, Romania
- 3Department of Geophysics, Faculty of Science, University of Zagreb, Zagreb, Croatia
- 4Department of Earth Sciences, ETH Zürich, Zürich, Switzerland
- 5MTA FI Lendület Pannon LitH2Oscope Research Group, Institute of Earth Physics and Space Science, Sopron, Hungary
- *A full list of authors appears at the end of the abstract
We perform the first, detailed S-to-P receiver function analysis to determine the depth of the lithospheric thickness in the Eastern Alps, Carpathians, and the Pannonian Basin. The Pannonian Basin hosts deep sedimentary depocentres superimposed on a complex basement structure and it is surrounded by mountain belts. The geophysical data on which investigated the lithospheric thickness was derived in the whole Pannonian Basin, are more than 20 years old. The determination and compilation of a new dataset is timely. This work is the first uniform and comprehensive S receiver function study of the Alpine-Carpathian-Pannonian system. We present our detailed workflow from the data download via quality controls to the calculations and interpretations of the S receiver functions in this study.
We use data from the temporary seismic networks, the permanent stations of the Hungarian National Seismological network, as well as the permanent seismological stations in neighboring countries for the time range between 0.1.01.2002 and 31.01.2022. Owing to the dense station coverage we can achieve so far unprecedented resolution, altogether 389 seismological stations are used in this study. This enables us to provide new, hitherto unknown information about the lithospheric thickness of the region. We apply two different quality control procedures for the downloaded waveforms and the calculated S receiver functions. S receiver functions are determined by the iterative time domain deconvolution approach.
We apply 1D and 2D migration of the S receiver function. We compare our result maps with map from previous geophysical investigation. We show migrated Common Conversion Point cross-sections beneath the Pannonian Basin and Carpathians, and the Eastern Alps–Pannonian Basin transition zone. Furthermore, we would like to provide new information about lithospheric thickness in the eastern part of the investigated region (e.g., Apuseni Mountains, Eastern-, Southern-Carpathians, Moesian Platform and Transylvanian Plateau).
Furthermore, we jointly interpret the S receiver function results with the seismic tomography calculations of the P and S wave
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How to cite: Kalmár, D., Petrescu, L., Stipčević, J., Balázs, A., and Kovács, I. J. and the the AlpArray Working Group: S-to-P receiver function analysis in the Alpine-Carpathian-Pannonian system, EGU General Assembly 2023, Vienna, Austria, 24–28 Apr 2023, EGU23-3885, https://doi.org/10.5194/egusphere-egu23-3885, 2023.
