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http://hdl.handle.net/2122/14164
Authors: | Sparacino, Federica* Palano, Mimmo* Peláez, José Antonio* Fernández, José* |
Title: | Geodetic Deformation versus Seismic Crustal Moment-Rates: Insights from the Ibero-Maghrebian Region | Journal: | Remote Sensing | Series/Report no.: | /12(2020) | Publisher: | MDPI | Issue Date: | 16-Mar-2020 | DOI: | 10.3390/rs12060952 | URL: | https://www.mdpi.com/2072-4292/12/6/952 | Keywords: | earthquake catalogs seismic/aseismic behavior GNSS earthquake hazards Eurasia-Nubia plate |
Subject Classification: | 04. Solid Earth 04.03. Geodesy |
Abstract: | Seismic and geodetic moment-rate comparisons can reveal regions with unexpected potential seismic hazards. We performed such a comparison for the Southeastern Iberia—Maghreb region. Located at the western Mediterranean border along the Eurasia–Nubia plate convergence, the region has been subject to a number of large earthquakes (M ≥ 6.5) in the last millennium. To this end, on the basis of available geological, tectonic, and seismological data, we divided the study area into twenty-five seismogenic source zones. Many of these seismogenic source zones, comprising the Western Betics, the Western Rif mountains, and the High, Middle, and Saharan Atlas, are characterized by seismic/geodetic ratio values lower than 23%, evidencing their prevailing aseismic behavior. Intermediate seismic/geodetic ratio values (between 35% and 60%) have been observed for some zones belonging to the Eastern Betics, the central Rif, and the Middle Atlas, indicating how crustal seismicity accounts only for a moderate fraction of the total deformation-rate budget. High seismic/geodetic ratio values (> 95%) have been observed along the Tell Atlas, highlighting a fully seismic deformation. |
Appears in Collections: | Article published / in press |
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File | Description | Size | Format | |
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2020_Sparacino et al [Iberia-Maghreb moment-rates] RS.pdf | final file | 9.71 MB | Adobe PDF | View/Open |
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