Large Earthquakes at the Ibero-Maghrebian Region: Basis for an EEWS

Buforn, E.; Udías, Agustín; Pro, C.

doi:10.1007/s00024-014-0954-0

Cited by 14 publications

(11 citation statements)

References 42 publications

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“…The latter stretches from the northernmost part of the Western Sahara Territory over Morocco and northern Algeria to Tunisia [14,15]. The IMR has previously been described in different scientific contexts, such as seismotectonics [16][17][18] and biogeography [19][20][21][22][23]. It furthermore includes the three Biodiversity sub-Hotspots of the High and Middle Atlas, the Baetic-Rifan mountain complex, and Kabylia-Numidia-Kroumire and is neighboured by the Mediterranean Cyrenaica of northeast Libya [9,12].…”

Section: Introductionmentioning

confidence: 99%

Phylogeny of the Eurasian Wren Nannus troglodytes (Aves: Passeriformes: Troglodytidae) reveals deep and complex diversification patterns of Ibero-Maghrebian and Cyrenaican populations

Albrecht

Hering²,

Fuchs³

et al. 2020

PLoS ONE

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The Mediterranean Basin represents a Global Biodiversity Hotspot where many organisms show high inter-and intraspecific differentiation. Extant phylogeographic patterns of terrestrial circum-Mediterranean faunas were mainly shaped through Pleistocene range shifts and range fragmentations due to retreat into different glacial refugia. Thus, several extant Mediterranean bird species have diversified by surviving glaciations in different hospitable refugia and subsequently expanded their distribution ranges during the Holocene. Such a scenario was also suggested for the Eurasian Wren (Nannus troglodytes) despite the lack of genetic data for most Mediterranean subspecies. Our phylogenetic multi-locus analysis comprised 18 out of 28 currently accepted subspecies of N. troglodytes, including all but one subspecies which are present in the Mediterranean Basin. The resulting phylogenetic reconstruction dated the onset of the entire Holarctic radiation of three Nannus species to the early Pleistocene. In the Eurasian Wren, two North African subspecies represented separate basal lineages from the Maghreb (N. t. kabylorum) and from the Libyan Cyrenaica (N. t. juniperi), being only distantly related to other Mediterranean populations. Although N. troglodytes appeared to be paraphyletic with respect to the Nearctic Winter Wren (N. hiemalis), respective nodes did not receive strong statistical support. In contrast, paraphyly of the Ibero-Maghrebian taxon N. t. kabylorum was strongly supported. Southern Iberian populations of N. t. kabylorum did not clade with Maghrebian populations of the same subspecies but formed a sister clade to a highly diverse European clade (including nominate N. t. troglodytes and eight further taxa). In accordance with a pattern also found in other birds, Eurasian

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Section: Introductionmentioning

confidence: 99%

Phylogeny of the Eurasian Wren Nannus troglodytes (Aves: Passeriformes: Troglodytidae) reveals deep and complex diversification patterns of Ibero-Maghrebian and Cyrenaican populations

Albrecht

Hering²,

Fuchs³

et al. 2020

PLoS ONE

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“…From a synthesis of recent studies on the large earthquakes in northern Algeria, we can conclude that these events occurred generally in the Tell belt region (Buforn et al, 2014). Strong earthquakes with magnitude greater than 6.5 are rare.…”

Section: Discussionmentioning

confidence: 91%

The large Algerian earthquakes (267 A.D.-2017)

2017

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“…Their orientation is perpendicular to the orientation of the present-day convergence between Africa and Eurasia (e.g., Olaiz et al, 2009). A distributed deformation in the Alborán Sea region, to the East of the Gibraltar Arc, has been classically defined as diffuse in relation to the seismicity pattern (Vegas, 1991;Jímenez-Munt et al, 2001;Buforn et al, 2015;Grevemeyer et al, 2015;Palano et al, 2015), however recent geophysical and geological studies points to concentration of crustal deformation along several striking NE-SW and NW-SE fault zones in this region (Negredo et al, 2002;Serpelloni et al, 2007;Neres et al, 2016). The current plate boundary between Nubia (West Africa) and Eurasia is related to the evolution of the Betic-Rif orogenic system which was generated by the westward drift of the Alborán Crustal Domain in relation to the westward retreat of a subduction slab (Lonergan and White, 1997;Jolivet and Faccenna, 2000;Pedrera et al, 2011;Molina-Aguilera et al, 2019) (Figure 1C).…”

Section: Geological Settingmentioning

confidence: 99%

Submarine Active Faults and Morpho-Tectonics Around the Iberian Margins: Seismic and Tsunamis Hazards

et al. 2021

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The aim of this work is to make a synthesis at regional scale focused on the geophysical characterization of submarine faults around the Iberian margin to identify active structures and analyze their development in the framework of the present plate organization. Most of these submarine faults show seabed morphological expressions mapped with high-resolution swath bathymetry data, high-resolution parametric sub-bottom profiles and multichannel seismic profiles. Present active tectonics, deformation, seismicity, and tsunami-affected coastal areas is mainly focused on south Iberia at the Eurasian and Nubia plate boundary. Submarine active faults in these areas are represented by long strike-slip fault systems and arcuate fold-thrust systems. Their development takes place in response to present NW-SE convergence between the Eurasian and Nubia plates. We propose a strain partitioning model of the plate boundary into simple and pure shear zones to explain the distribution and mechanisms of active submarine faults along the Gulf of Cádiz, Gibraltar Arc and Alborán Sea in response to the present-day shear stress orientation. Nevertheless, deformation is also focused in the NW Iberian margin. Thus, along the Galician and Portuguese margin, several submarine faults mapped as thrust fault systems with high-seismic activity along the Iberian ocean-continent transition reflect the re-activation of former structures. We suggest that submarine active faults in the NW and W Iberia are also the response to the eastwards transfer of short-offset transform faults of the Mid Atlantic Ridge into the oceanic Iberian along a weakness as the former plate boundary between the oceanic Iberia and Eurasia domains. The distribution and activity of submarine faults mapped in this work from geophysical and bathymetric data are in good agreement with geodetic data and focal mechanisms.

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Large Earthquakes at the Ibero-Maghrebian Region: Basis for an EEWS

Cited by 14 publications

References 42 publications

Phylogeny of the Eurasian Wren Nannus troglodytes (Aves: Passeriformes: Troglodytidae) reveals deep and complex diversification patterns of Ibero-Maghrebian and Cyrenaican populations

Phylogeny of the Eurasian Wren Nannus troglodytes (Aves: Passeriformes: Troglodytidae) reveals deep and complex diversification patterns of Ibero-Maghrebian and Cyrenaican populations

The large Algerian earthquakes (267 A.D.-2017)

Submarine Active Faults and Morpho-Tectonics Around the Iberian Margins: Seismic and Tsunamis Hazards

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