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The Portuguese national seismic network: products and services
Carrilho, Fernando; Custodio, Susana; Bezzeghoud, Mourad; Oliveira, Carlos; Marreiros, Célia; Vales, Dina; Alves, Paulo; Pena, AreosaPortugal, located in the southwest region of the Eurasian plate, has been affected by several destructive earthquakes throughout its history, the most well-known being the 1755 Great Lisbon earthquake. The seismicity of the territory, both in the mainland and in the Azores and Madeira islands, has prompted the continuous development of seismic monitoring, from the first known macroseismic inquiry, following the...
OS SHAKEMAPS DO SISMO DE ARRAIOLOS DE 15 DE JANEIRO DE 2018 (ML 4.9)
Marreiros, Célia; Alves, Paulo; Caldeira, Bento; Araújo, Alexandre; Borges, José; Bezzegoud, Mourad; Carrilho, FernandoOn the 15-01-2018, after the occurrence of the earthquake of magnitude 4.9 ML at the region of Arraiolos, maps were produced automatically to characterize the impact of the earthquake [seismic intensity (Mercalli Modified scale, 1956), peak acceleration (PGA) and peak velocity (PGV)], using a modified version of the software ShakeMap made available by the U.S. Geological Survey (USGS). The maps produced (shakem...
Earthquakes in western Iberia: improving the understanding of lithospheric defo...
Custódio, Susana; Dias, Nuno; Carrilho, F.; Góngora, E.; Rio, I.; Marreiros, Célia; Morais, Iolanda; Alves, P.; Matias, LuísMainland Portugal, on the southwestern edge of the European continent, is located directly north of the boundary between the Eurasian and Nubian plates. It lies in a region of slow lithospheric deformation (< 5 mm yr(-1)), which has generated some of the largest earthquakes in Europe, both intraplate (mainland) and interplate (offshore). Some offshore earthquakes are nucleated on old and cold lithospheric mantl...