DSEBRA goes to Greece and Northern Macedonia as part of AdriaArray
2023Conference Paper
Englisch
Fischer, Kasper David; Paffrath, Marcel; Friederich, Wolfgang, 2023: DSEBRA goes to Greece and Northern Macedonia as part of AdriaArray. DOI: https://doi.org/10.23689/fidgeo-5749.
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The AdriaArray project addresses fundamental questions related to the geodynamics and the deformation and stress field of the Adriatic plate in south-eastern Europe. The observational basis of AdriaArray is a recently formed seismic broadband array that joins newly deployed temporary and existing permanent stations all over the entire Adriatic plate.
Here, we report on the deployment of temporary stations by Ruhr-University Bochum (RUB) in Greece and Northern Macedonia. This contribution enhances the local networks by 35 new temporary stations and upgrades the instruments at 17 permanent sites. Most of these sites are equipped with broadband instruments from the German DSEBRA array which were previously installed within the scope of the AlpArray project.
Deployment started with 37 stations in Greece at the end of September / beginning of October 2022 in cooperation with partners from the universities of Thessaloniki, Athens and Patras, as well the National Observatory of Athens (NOA). The deployment of stations in North Macedonia is planned for February 2023 in cooperation with the Seismological Observatory of the University of Skopje.
All stations are supplied with mobile routers for live-streaming of waveform data and for monitoring the state-of-health of the stations. Data is streamed in near real-time to servers of the Seismological Observatory of the RUB and to the EIDA node of NOA. The FDSN network code 1Y is assigned to the temporary stations, while the upgraded permanent stations remain a part of their original networks. The newly deployed stations in Greece were able to register data of the still ongoing seismic series of Evia which started in November 2022.
We present examples of the recorded seismograms from these events and estimate the quality of the stations by calculating probability power spectral densities (PPSD) to ensure that the stations meet the quality requirements of the AdriaArray project. First results of the calculated PPSDs illustrate the overall performance of these stations and help to identify problematic stations for which alternative sites have to be scouted.