Encontrados 11 documentos, a visualizar página 1 de 2
The ALERT-ES Project: an Earthquake Early Warning System for S. Iberia
Buforn, E.; Carranza, M.; Udías, A.; Goula, X.; Colom, Y.; Roca, A.; Zollo, A.; Lozano, L.; Pro, C.; Carrilho, F.; Hanka, W.; Madariaga, R.The main goal of the ALERT-ES project (“Sistema de Alerta Sísmica Temprana: Aplicación al Sur de España”) is to study the feasibility of an Earthquake Early Warning System (EEWS) for SW Iberian Peninsula applied to the potentially damaging earthquakes that occur in the region of Cape S. Vicente-Gulf of Cadiz. This area is characterized by the occurrence of large earthquakes with damage in SW Iberia, such as tho...
Mechanism of 2003, 2007 and 2009 earthquakes (S. Vicente Cape) and implications...
Buforn, E.; Pro, C.; Bezzeghoud, M.; Udias, A.The San Vicente Cape region (SW Iberia) is of great seismological interest due to its tectonic complexity and for the occurrence of the 1755 Lisbon mega-earthquake. A structure capable of generating such large earthquake has not been convincingly found but authors agree with the possible occurrence in the future of a similar earthquake offshore of San Vicente Cape.We have studied the mechanism of three earthqua...
The ALERT-ES Project for earthquakes in Cape San Vicente region
Buforn, E.; Mattesini, M.; Martín Dávila, J.; Goula, X.; Colom, Y.; Zollo, Z.; Udías, A.; Pazos, A.; Roca, A.; Lozano, L.; Carrilho, F.; Hanka, W.The main goal of the ALERT-ES project ("Sistema de Alerta Sismica Temprana: Aplicacion al Sur de España" ) is to study the feasibility of an Earthquake Early Warning System (EEWS) for the potentially damaging earthquakes that occur in the zone Cape S. Vicente-Gulf of Cadiz (S. Spain). This area is characterized by the occurrence of large and damaging earthquakes such as the 1755 Lisbon (Imax=X) or 1969 S. Vicen...
The Gulf of Cádiz: thrusting or strike-slip motion?
Bezzeghoud, M.; Buforn, E.; Caldeira, B.; Pro, M.C.; Borges, J.F.; Udías, A.In the Gulf of Cádiz (SW Iberian Peninsula) the boundary between Eurasia and Nubia plates corresponds to a narrow band well defined by the seismicity, where large earthquakes (M>7.0) may be associated to N-S to NNW-SSE horizontal compression due to the convergence between the two plates. Most of these earthquakes are at shallow depth (less than 40 km), with some foci at intermediate-depth, showing E-W distribut...
Intermediate depth and deep earthquakes: complexity of the Ibero-Magrhebian region
Buforn, E.; Cesca, S.; Bezzeghoud, M.; del Fresno, C.; Udias, A.The Ibero-Magrhebian region is located at the plate boundary between Eurasia and Africa and it is a tectonically complex region. A sign of the complexity, is the occurrence of intermediate depth earthquakes (40<h<150 km), located in south Spain, between Granada- Malaga and at the west part of Alboran Sea, together with the occurrence of very deep earthquakes (h≈650 km) near Dúrcal (Granada). Intermediate depth ...
Seismic activity in the Azores Region in the contexto of the western part of th...
Bezzeghoud, M.; Borges, J.F.; Caldeira, B.; Buforn, E.; Udias, A.The western part of the Eurasia-Nubia plate boundary, with different tectonic features, extends from the Azores Islands to the Strait of Gibraltar. Based on focal mechanisms of large earthquakes, we observe the conversion of an extensional regime (Strike-slip and normal dip-slip motion) near to the Azores to a compressional regime (strike-slip and reverse dip-slip motion) in the east of the Atlantic Ocean (Gulf...
“Western Mediterranean” (WM) broad band network: permanent seismic monitoring a...
Davila, J. Martin; Pazos, A; Buforn, E; Udias, A; Benzzeghoud, M; Borges, JF; Harnafi, M; Rimi, A.; Hanka, W; Nadji, AThe “Ibero-Maghrebian” region, a western part of the Eurasia-Africa plate boundary, is a broad deformation area without a well defined plate boundary line, comprising the Southern part of the Iberian Peninsula, the Northwestern part of Africa, the Gulf of Cadiz and the Alboran Sea, with a convergence between Iberia and Africa at some mm/year (Nuvel-1A model, DeMets et al, 1994) in a NNW-SSE direction, and a dif...
Broad band “Western Mediterranean” and ocean bottom “Fomar” seismological networks
Martin-Davila, J.; Pazos, A.; Buforn, E.; Udias, A.; Bezzeghoud, M.; Caldeira, B.; Rimi, A.; Harnafi, M.; Hanka, W.; Nadji, A.To study the seismicity associated to the Ibero-Maghrebian region, the Real Instituto y Observatorio de la Armada in San Fernando (ROA) has installed, since 1898, different types of seismological stations. At present two networks are in operation: Long Period station and Short Period net (ROA) and Western Mediterranean Broad Band (WM) net (in collaboration among several institutions). The installation of a netw...
THE WESTERN MEDITERRANEAN SEISMOLOGICAL NETWORK
Pazos, A.; Davila, J.M.; Buforn, E.; Udias, A.; Hanka, W.; Bezzeghoud, M.; Harnafi, M.; Nadji, A.; Rimi, A.; Mansour, H.The Royal Naval Observatory in San Fernando (ROA), together with the Complutense University from Madrid (UCM), and in collaboration with the GeoForschungsZentrum of Potsdam (GFZ), have deployed a broad band seismic network around the Alboran sea, in southern Spain, northern Africa. This network started to operate in 1996 with the installation of the SFUC station, near the Observatory. Since then, several statio...
The 12/02/2007 SW Cape San Vicente Earthquake: SFS (San Fernando SP) and WM (We...
Martín-Davila, J.; Pazos, A.; Buforn, E.; Udías, A.; Bezzeghoud, M.; Caldeira, B.; Rimi, A:; Harnafi, M.; Hanka, W.; Nadji, A.The western part of the Eurasia-Africa plate boundary crosses the Gulf of Cadiz at about 36oN latitude, without a well defined boundary line. The plate convergence, at a rate of a few mm/year in a NNW/SSE to NW/SE direction (Buforn et al 2004), induces a moderate magnitude and shallow depth seismicity, but a clear intermediate activity (figure 1) is also present at the area and large magnitude historical events...
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