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Source characterization and strong ground motion parameters modulation of the largest earthquakes southeast Luxor, south Egypt

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Abstract

Three felt earthquakes with moderate local magnitudes range from 3.7 to 4.5 Richter are located southeast Luxor, south Egypt. The investigated events represents the largest instrumental earthquake to be recorded during the period from 1997 to 2024 in the southeast Luxor seismic zone, south Egypt. The most recent earthquake of January 2024 with local magnitude 4.5 was felt in various cities located close to and around the epicentral region such as Luxor, New Tiba, New Luxor, Armant, Esna, and Aswan areas. Full waveform moment tensor inversion is used to dedicate the fault planes orientation of the investigated earthquakes. The optimum source parameters accompanied with maximum fitting and the best double couple mechanism of the investigated events indicated that strike slip movement are dominated. The estimated values of the moment magnitude and seismic moment of December 2015, December 2022, and January 2023, are: 3.7, 1.43e + 21 dyne-cm; 3.3, 1.20e + 21 dyne-cm; and 4.4, 3.31e + 22 dyne-cm, respectively. The stochastic simulation method depending on the site spectral model is used to estimate the effect and strong ground motions parameters of the largest earthquake in January 2024 at the new planned constructed cities including New Luxor city and New Tiba city. The modulated parameters are represents as the peaks value of ground acceleration (PGA), ground velocity (PGV), ground displacement (PGD), and the pseudo spectral acceleration (PSA). The derived results revealed that the PGA (8.6 cm/s2), the PGV (0.22 cm/s), and the PGD (0.02 cm) simulated at New Luxor city with epicentral distance 38 km, while the modulated strong ground motion parameters at New Tiba city with epicentral distance 40 km are PGA (7.3 cm/s2), PGV (0.18 cm/s), and PGD (0.02 cm). The highest values of PSA are (24.82 cm/s2), and (21.23 cm/s2) at New Luxor and New Tiba cities are obtained, respectively. Although, the investigated events are moderate, they generate great interest for earthquake hazard along this active zone.

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Data availability

The data that support the findings of this study are available from NRIAG but restrictions apply to the availability of these data, which were used under license for the current study, and so are not publicly available. Data are however available from the authors upon reasonable request and with permission of NRIAG.

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Acknowledgements

We are grateful to the financial support from the Quarries Services Project working under the Seismology Department of NRIAG. We offer our profound thanks to the Aswan regional earthquake research center, and all the staff members of the Egyptian National Seismograph Network for their help and support. We thank the two anonymous referees for reviewing the manuscript and their constructive comments that significantly enhanced and improved the revised version of the manuscript.

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Authors and Affiliations

  1. National Research Institute of Astronomy and Geophysics, Helwan, 11918, Egypt

    Hamada Saadalla, Abd el-aziz Khairy Abd el-aal & Elsayed Issawy

  2. Kuwait Institute for Scientific Research (KISR), 13109, Safat, Kuwait

    Abd el-aziz Khairy Abd el-aal

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  1. Hamada Saadalla
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  2. Abd el-aziz Khairy Abd el-aal
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  3. Elsayed Issawy
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Contributions

HS processed the earthquakes data. The full moment tensor and simulation analysis performed by HS, and AK are involved in the interpretations and integration of the results. SI is involved in the final review and the response to the reviewer’s comments. All authors have read and approved the final manuscript.

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Correspondence to Hamada Saadalla.

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Saadalla, H., el-aal, A.ea.K.A. & Issawy, E. Source characterization and strong ground motion parameters modulation of the largest earthquakes southeast Luxor, south Egypt. Model. Earth Syst. Environ. (2024). https://doi.org/10.1007/s40808-024-02044-w

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