Database of the 2023 seismic sequence recorded in Gorj area (Romania)
Description
An intense seismic sequence occurred in 2023 in Gorj area (Romania), part of the Central Southern Carpathians seismic zone, having a doublet as main shocks. The first one, with a local magnitude of 5.2, was recorded on February 13 at 14:58:09 UTC, and the second one, with a local magnitude of 5.7, was recorded the next day at 13:16:52 UTC. The data was processed using recordings from the Romania Seismic Network stations. This database contains the parameters of the two main shocks and over 2000 aftershocks as recorded and located up to the present. It will be continuously updated.
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Steps to reproduce
The earthquakes parameters of earthquakes were compiled using the Antelope (TM, BRTT) software and the IASP91 velocity model (Kennett and Engdahl, 1991). The details about acquisition, location and magnitude estimation (ML) can be found in the paper Ionescu et. al (2020). The local magnitude (ML) was also converted into moment magnitude (Mw) based on the relation of Oncescu et. al (1999) for crustal events. References: Ionescu, C., Popa, M., Neagoe, C., & Ghica, D. V. (2020). Seismic Monitoring and Data Processing at the National Institute for Earth Physics–Romania. Summary of the Bulletin of the International Seismological Centre, 55(I), 30-42. https://doi.org/10.31905/33JMP4MA Oncescu, M. C., Marza, V. I., Rizescu, M., & Popa, M. (1999). The Romanian earthquake catalogue between 984–1997. In Vrancea Earthquakes: Tectonics, Hazard and Risk Mitigation: Contributions from the First International Workshop on Vrancea Earthquakes, Bucharest, Romania, November 1–4, 1997 (pp. 43-47). Springer Netherlands. Kennett, B. L. N., & Engdahl, E. R. (1991). Traveltimes for global earthquake location and phase identification. Geophysical Journal International, 105(2), 429-465. https://doi.org/10.1111/j.1365-246X.1991.tb06724.x BRTT - https://brtt.com/