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Geoscientific information

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  • The portuguese national seismic network consists of a large and varied set of seismic stations comprising sensors of various types (broadband, short and strong-motion), high dynamic acquisition systems and real-time data transmission or near real-time through satellite and internet (mobile and fixed). The purpose of this device is the monitoring and surveillance of seismic activity throughout the national territory and surrounding areas, as well as to contribute to the seismic monitoring on a global scale and as an early warning system for tsunamis.

  • Geology and Geomorphology of offshore Portugal in the Quaternary period, using as reference the Geological Chart of the Immersed Area, Scale 1: 2 000 000, of the Geological Chart of Portugal, Scale 1: 1 000 000. National Laboratory of Energy and Geology (LNEG) 2010 .

  • Location of structures resulting from the submarine fluids emissions, such as: mud volcanoes (methane hydrates); Pockmaks (methane) and hydrothermal vents (fluids enriched in salts and metallic elements), located between the Mid-Atlantic Rift zone (Azores archipelago) and the continental margin.

  • Volcanic centres in the Portuguese offshore, located between the Mid-Atlantic Rift zone (Azores archipelago) and the continental margin.

  • Sedimentological characterization of part of the continental shelf. Folk classification (7 classes).

  • Areas that evidence the occurrence of submarine landslides, located between the Middle Atlantic Rift zone (Azores archipelago) and the Continental margin.

  • Most important faults identified in the portuguese offshore, occurring between the Middle Atlantic Rift zone (Azores archipelago) and the Continental margin.

  • Geology and Geomorphology of the portuguese offshore of the Pre-Quaternary, using as reference the Geological Chart of the Immersed Area, Scale 1: 2 000 000, of the Geological Chart of Portugal, Scale 1: 1 000 000. National Laboratory of Energy and Geology (LNEG) 2010 .

  • The FREEZE 2010 geophysical cruise was planned to acquire a detailed bathymetry just off Olhos d'Agua, high resolution seismic and Side Scan Sonar data in order to investigate and define the geological and the tectonic settings off Olhos d'Agua (Algarve coast, South Portugal) and to find any possible evidence of supposed existing submarine groundwater discharges (SGDs) in this area.