The Beni-Ilmane (Algeria) seismic sequence of May 2010: Seismic sources and stress tensor calculations
| العنوان: | The Beni-Ilmane (Algeria) seismic sequence of May 2010: Seismic sources and stress tensor calculations |
|---|---|
| المؤلفون: | Abdelkarim Yelles-Chaouche, H. Beldjoudi, H. Djellit, Sofiane Gharbi, Bertrand Delouis, Issam Abacha |
| المساهمون: | Centre de Recherche en Astronomie Astrophysique et Géophysique (CRAAG), Géoazur (GEOAZUR 6526), Institut de Recherche pour le Développement (IRD)-Université Pierre et Marie Curie - Paris 6 (UPMC)-Université Nice Sophia Antipolis (... - 2019) (UNS), COMUE Université Côte d'Azur (2015-2019) (COMUE UCA)-COMUE Université Côte d'Azur (2015-2019) (COMUE UCA)-Institut national des sciences de l'Univers (INSU - CNRS)-Observatoire de la Côte d'Azur, Université Côte d'Azur (UCA)-COMUE Université Côte d'Azur (2015-2019) (COMUE UCA)-Université Côte d'Azur (UCA)-Centre National de la Recherche Scientifique (CNRS), Institut de Recherche pour le Développement (IRD)-Université Pierre et Marie Curie - Paris 6 (UPMC)-Université Nice Sophia Antipolis (1965 - 2019) (UNS), COMUE Université Côte d'Azur (2015-2019) (COMUE UCA)-Université Côte d'Azur (UCA)-Université Côte d'Azur (UCA)-Centre National de la Recherche Scientifique (CNRS) |
| المصدر: | Tectonophysics Tectonophysics, Elsevier, 2016, 670, pp.101-114. ⟨10.1016/j.tecto.2015.12.021⟩ Tectonophysics, 2016, 670, pp.101-114. ⟨10.1016/j.tecto.2015.12.021⟩ |
| بيانات النشر: | HAL CCSD, 2016. |
| سنة النشر: | 2016 |
| مصطلحات موضوعية: | Focal mechanism, 010504 meteorology & atmospheric sciences, Cauchy stress tensor, Plane (geometry), [SDU.STU]Sciences of the Universe [physics]/Earth Sciences, Moment magnitude scale, Induced seismicity, 010502 geochemistry & geophysics, 01 natural sciences, Shock (mechanics), Stress (mechanics), Geophysics, Waveform, Seismology, Geology, 0105 earth and related environmental sciences, Earth-Surface Processes |
| الوصف: | International audience; A moderate earthquake with a moment magnitude of Mw 5.5 struck the Sub-Bibanique region of eastern Algeria on 14 May 2010, killing three people, injuring hundreds of others, and causing moderate damages in the epicentral area, mainly in the villages of Beni-Ilmane and Samma. The focal mechanism of the seismic source for the first shock, obtained by near-field waveform modelling, exhibits left-lateral strike-slip faulting with the first nodal plane oriented at N345°, and right-lateral strike-slip faulting with the second nodal plane oriented at N254°. A second earthquake that struck the region on 16 May 2010, with a moment magnitude of Mw 5.1, was located 9 km SW of the first earthquake. The focal mechanism obtained by waveform modelling showed reverse faulting with nodal planes oriented NE–SW (N25° and N250°). A third earthquake that struck the region on 23 May 2010, with a moment magnitude of Mw 5.2, was located 7 km S of the first shock. The obtained focal mechanism showed a left-lateral strike-slip plane oriented at N12° and a right-lateral strike-slip plane oriented at N257°. Field investigations combined with geological and seismotectonic analyses indicate that the three earthquake shocks were generated by activity on three distinct faults. The second and third shocks were generated on faults oriented WSW–ENE and NNE–SSW, respectively. The regional stress tensor calculated in the region gives an orientation of N340° for the maximum compressive stress direction (σ1) which is close to the horizontal, with a stress shape factor indicating either a compressional or a strike-slip regime. |
| اللغة: | English |
| تدمد: | 0040-1951 1879-3266 |
| URL الوصول: | https://explore.openaire.eu/search/publication?articleId=doi_dedup___::fecaaf010e3d8353908bf1d218767fe6 https://hal.archives-ouvertes.fr/hal-01346503 |
| حقوق: | CLOSED |
| رقم الأكسشن: | edsair.doi.dedup.....fecaaf010e3d8353908bf1d218767fe6 |
| قاعدة البيانات: | OpenAIRE |
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