Active Tectonics and Seismic Hazard in the Tell Atlas (Northern Algeria): A Review

Maouche, Saïd; Bouhadad, Youcef; Harbi, Assia; Rouchiche, Yasmina; Ousadou, Farida; Ayadi, Abdelhakim

doi:10.1007/978-3-319-96794-3_10

Cited by 20 publications

(5 citation statements)

References 61 publications

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“…The lithosphere is not a uniform entity, but contains directionally heterogeneous characteristics and is divided into large and small blocks by many active zones, such as mid-ocean ridges, trenches, transform faults, Earth sutures, and continental rifts. The interior of the plates are stable, while the edges and joint zones of the plates are active zones on the Earth's surface, with strong tectonic movement (Ouchi, 1985), magmatic activity (Pilger, 1984), volcanic activity (Canon and Walker, 2004), metamorphic rock (Holder et al, 2019), and seismic activity (Maouche et al, 2019). These active zones are also very favorable mineralization zones .…”

Section: Figurementioning

confidence: 99%

Influence of the Yucatan earthquake event

2023

Front. Earth Sci.

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In recent years, seismic wave effects caused by meteorite impacts have been widely observed. The meteorite impact event that occurred 66 million years ago is one of the most famous impact events in Earth’s history. The influences of the seismic wave field generated by this collision event on the solid Earth itself is worth exploring. Therefore, this study initially estimated the seismic source parameter information based on the multiring structure of the meteorite crater, and then simulates the seismic event. The results of this study provide a possible explanation for the formation of the Earth’s tectonic plates. The findings of this study suggest that the seismic wave field generated by the meteorite impact event 66 million years ago may have caused the destruction of the Solid Earth, leading to the formation of the boundary between the Indian Ocean and the Pacific Plate. Simultaneously, this study has important significance for inspiring the development of new geoscientific methods.

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Section: Figurementioning

confidence: 99%

Influence of the Yucatan earthquake event

2023

Front. Earth Sci.

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“…The geomorphological features obtained from the slope angle and aspect maps contributed to further description to delineate low‐sensitivity regions due to the geometric distortion effect along the line of sight (LoS) (Guo, Li, Chen, Li, & Yuan, 2021; Sun et al, 2016). The geology of the Mila Basin, shown in Figure 2, is composed mainly of post‐nappes sequence in which the land surface is subjected to current deformation (Chettah, 2009), with the presence of vertically oriented lineaments trending in the N‐S and E‐W directions, that represent the main reason for the recent active morpho‐structures existing in the study area (Esposito, Carabella, Paglia, & Miccadei, 2021; Maouche et al, 2019; Meghraoui, 1988; Merghadi et al, 2018). The landslides reported previously in the Mila Basin are classified as shallow (<5 m depth) and deep (>5 m depth) landslides, most of which are distributed in Neogene lithological units (Figure 2).…”

Section: Geomorphological Geological and Geotechnical Settingmentioning

confidence: 99%

Multi‐temporal InSAR analysis to monitor landslides using the small baseline subset (SBAS) approach in the Mila Basin, Algeria

et al. 2022

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“…The tectonic structures in this region are the result of nearly N-S compressional movements of the African and Eurasian plates since the Cenozoic. Neogene post-nappe basins, which correspond to E-W-elongated intermountain structures, are characterized by compressional deformation that underwent extension during the Quaternary (Maouche et al, 2019). These neotectonic features are expressed by the development of a set of (1975) without relating them to the seismicity of the region.…”

Section: Geologic Setting Of the Medea Regionmentioning

confidence: 99%

The 2007 Medea Seismic Sequence, North-Central Algeria: Source Parameters, Stress Tensor, and Static Stress Changes

Dabouz

Beldjoudi

Delouis

et al. 2021

Pure Appl. Geophys.

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Dense seismic networks provide the opportunity to better understand seismogenic processes in tectonically active regions. The Algerian Digital Seismic Network was strengthened following the 10 October 1980 Ms 7.3 El Asnam and 21 May 2003 Mw 6.8 Bournerdes earthquakes, such that the source parameters of small-to moderate-magnitude earthquakes in northern Algeria can now be computed. Here we examine the 2007 seismic sequence recorded in the Medea region (north-central part of Algeria). We calculate the seismic sources of three moderate events that occurred between May and August 2007 using near-field waveform modeling, and obtain moment magnitudes of 4.4, 4.1, and 4.6, with fault planes oriented N63°E, N15°E, and N219°E, respectively. We use displacement spectra to estimate the corner frequency f c and spectral flat level then use these to recalculate the seismic moment and moment magnitude. The stress tensor obtained by inverting 13 focal mechanisms from events near the 2007 sequence exhibits a well-constrained compressional axis with a subhorizontal N335°Etrending r 1 axis (plunge 7°). We calculate the static stress changes to understand the connections between these three events. The results indicate an interaction between the faults related to these events during the earthquake sequence. We conclude that these events likely occurred on the unstudied extensions of mapped faults, and that the epicentral area therefore has moderate seismogenic potential.

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Active Tectonics and Seismic Hazard in the Tell Atlas (Northern Algeria): A Review

Cited by 20 publications

References 61 publications

Influence of the Yucatan earthquake event

Influence of the Yucatan earthquake event

Multi‐temporal InSAR analysis to monitor landslides using the small baseline subset (SBAS) approach in the Mila Basin, Algeria

The 2007 Medea Seismic Sequence, North-Central Algeria: Source Parameters, Stress Tensor, and Static Stress Changes

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