19 documents found, page 1 of 2
Fault-mediated magma propagation and triggered seismicity revealed by the 2022 ...
Hicks, Stephen P.; Gonzalez, Pablo J.; Lomax, Anthony; Ferreira, Ana M. G.; Ramalho, Ricardo S.; Mitchell, Neil C.; Silveira, Graça; Dias, Nuno AfonsoAbstract Understanding failed volcanic eruptions is key to mapping magma plumbing and forecasting hazards. Faults and fractures guide magma, but their mechanisms remain unclear due to the lack of precise earthquake locations andlimited3-Dfaultmappinginvolcanicregions.The triple-junction setting of the Azores Archipelago, where volcanic systems and seismogenic faults coexist, offers a natural laboratory to study...
Livro de Resumos da 11ª Assembleia Luso Espanhola de Geodesia e Geofísica
Caldeira, Bento; Bortoli, Daniele; Duarte, Ediclê; Buforn, Elisa; Carrilho, Fernando; Couto, Flávio; Ribeiro, Helena; Sobrino, José AntónioLivro de Resumos da 11ª Assembleia Luso Espanhola de Geodesia e Geofísica
Monitorização sísmica no contexto da crise sísmica de São Jorge – Açores - de m...
Borges, José Fernando; Oliveira, Rui Jorge; Caldeira, Bento; Hamak, Ines; Carrilho, Fernando; Bezzeghoud, Mourad; Alves, PauloNo dia 19 de Março de 2022, pelas 17h e 11 minutos desencadeou-se na Ilha de S. Jorge - Açores uma crise sísmica cuja frequência atingiu o máximo de 700 eventos/hora. Nos dias seguintes ao início da crise, o Instituto de Ciências da Terra – Universidade de Évora - e o Instituto Português do Mar e da Atmosfera (IPMA) procederam à instalação de um conjunto de estações sísmicas nas ilhas de S. Jorge, Pico e Faial,...
The contribution of submarine optical fiber telecom cables to the monitoring of...
Matias, Luis; Carrilho, Fernando; Sá, Vasco; Omira, Rachid; Niehus, Manfred; Corela, Carlos; Barros, José; Omar, YasserRecent developments in optical fiber cable technology allows the use of existing and future submarine telecommunication cables to provide seismic and sea-level information. In this work we study the impact of three different technologies, 1) SMART, Science Monitoring and Reliable Telecommunications; 2) DAS, Distributed Acoustic Sensing, and; 3) LI, Laser Interferometry, for effective earthquake and tsunami moni...
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...
The making of the NEAM Tsunami Hazard Model 2018 (NEAMTHM18)
Basili, Roberto; Brizuela, Beatriz; Herrero, Andre; Iqbal, Sarfraz; Lorito, Stefano; Maesano, Francesco Emanuele; Murphy, Shane; Perfetti, PaoloThe NEAM Tsunami Hazard Model 2018 (NEAMTHM18) is a probabilistic hazard model for tsunamis generated by earthquakes. It covers the coastlines of the North-eastern Atlantic, the Mediterranean, and connected seas (NEAM). NEAMTHM18 was designed as a threephase project. The first two phases were dedicated to the model development and hazard calculations, following a formalized decision-making process based on a mu...
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...
INVESTIGAÇÃO DA SEQUÊNCIA SÍSMICA INICIADA PELO SISMO DE ARRAIOLOS (15/1/2018, ...
Matias, Luis; Rio, Inês; Waschilala, Piedade; Vales, Dina; Borges, José; Dias, Nuno; Carrilho, Fernando; Caldeira, Bento; Custódio, SusanaThe Arraiolos earthquake occurred the 15th January 2018 at 11:51 UTC with a magnitude ML=4.9 The main shock was followed by many aftershocks, some of them felt by the population, such as the ML=3.1 2018-02-01 event. A few hours after the main shock the ICT (Instituto de Ciências da Terra, Évora) and the IDL (Instituto Dom Luiz) began the deployment of a dense temporary seismic network that attained a total of 3...
O Sismo de Arraiolos de 15 de Janeiro de 2018 (M=4.9) – Rede sismográfica tempo...
Borges, José; Caldeira, Bento; Fontiela, João; Washilala, Piedade; Oliveira, Rui Jorge; Bezzeghoud, Mourad; Araújo, António; Vales, DinaEm 15 de janeiro de 2018 às 11:51 (UTC), ocorreu um sismo de magnitude 4,9 (ML). O seu hipocentro localiza-se na região NE de Arraiolos, perto da Aldeia da Serra, geograficamente localizado a 38,79 N, 7,93 W e a profundidade de 11 km (relatório do Instituto Português do Mar e da Atmosfera - IPMA). Devido à sua magnitude moderada, o terramoto não causou qualquer dano, mas foi amplamente sentido no Centro e no Su...
The Arraiolos – Portugal – Moderate-Sized 2018 (M = 4.9) earthquake of January ...
Borges, José; Caldeira, Bento; Fontiela, João; Custódio, Susana; Dias, Nuno; Waschilala, Piedade; Oliveira, Rui; Vales, Dina; Bezzeghoud, MouradOn 15 January 2018 at 11:51 UTC, an earthquake of 4.9 ML occurred in the Northeast of Arraiolos region near Aldeia da Serra village. The hypocentral location, determined by Instituto Português do Mar e da Atmosfera (IPMA), has coordinates 38.79 N, 7.93 W at 11 km depth. The focal mechanisms determined by P-wave first motion polarities and waveforms inversion indicate a dominance of strike-slip events with nodal...