Please use this identifier to cite or link to this item: 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 Classification04. 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.
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