6 documents found, page 1 of 1
TRIDENT – Technology based impact assessment tool foR sustaInable, transparent ...
Silva, E.; Viegas, D.; Martins, A.; Almeida, J.; Almeida, C.; Neves, B.; Madureira, P.; Wheeler, A. J.; Salavasidis, G.; Phillips, A.; Schaap, A.By creating a dependable, transparent, and cost-effective system for forecasting and ongoing environmental impact monitoring of exploration and exploitation activities in the deep sea, TRIDENT seeks to contribute to the sustainable exploitation of seabed mineral resources. In order to operate autonomously in remote locations under harsh conditions and send real-time data to authorities in charge of granting lic...
Foraging behavior of juvenile loggerhead sea turtles in the open ocean: from Lé...
Freitas, C.; Caldeira, R.; Reis, J.; Dellinger, T.Most sea turtle species spend part of, or their entire juvenile stage in pelagic habitats. A key question is how pelagic turtles exploit their environment to optimize prey intake and max imize fitness. This study combined animal telemetry with remote-sensed environmental data to quantify the drivers and patterns of foraging behavior of juvenile loggerhead sea turtles in the pelagic eastern North Atlantic. Juven...
The 2014-15 eruption and the short-term geochemical evolution of the Fogo volca...
Mata, J.; Martins, S.; Mattielli, N.; Madeira, JFA; Faria, B.; Ramalho, R. S.; Silva, P.; Moreira, M; Caldeira, R.; Moreira, Mário; Rodrigues, J.Recurrent eruptions at very active ocean island volcanoes provide the ideal means to gain insight on the scale of spatial variations at the mantle source and on temporal changes of magma genesis and evolution processes. In 2014, after 19 years of quiescence, Fogo volcano (Cape Verde Archipelago) experienced a new eruption, with the vents located 200 m from those of the 1995 eruption, and less than 2000 m from t...
Sediment sampling in estuarine mudflats with an aerial-ground robotic team
Deusdado, P.; Guedes, M.; Silva, A.; Marques, F.; Pinto, E.; Rodrigues, P.; Lourenço, A.; Mendonça, R.; Santana, P.; Corisco, J.; Almeida, S. M.This paper presents a robotic team suited for bottom sediment sampling and retrieval in mudflats, targeting environmental monitoring tasks. The robotic team encompasses a four-wheel-steering ground vehicle, equipped with a drilling tool designed to be able to retain wet soil, and a multi-rotor aerial vehicle for dynamic aerial imagery acquisition. On-demand aerial imagery, properly fused on an aerial mosaic, is...
An aerial-ground robotic team for systematic soil and biota sampling in estuari...
Deusdado, P.; Pinto, E.; Guedes, M.; Marques, F.; Rodrigues, P.; Lourenço, A.; Mendonça, R.; Silva, A.; Santana, P.; Corisco, J.; Almeida, M.This paper presents an aerial-ground field robotic team, designed to collect and transport soil and biota samples in estuarine mudflats. The robotic system has been devised so that its sampling and storage capabilities are suited for radionuclides and heavy metals environmental monitoring. Automating these time-consuming and physically demanding tasks is expected to positively impact both their scope and freque...
C3G - A portuguese collaboration for geology, geodesy and geophysics
Caldeira, Bruno; Caldeira, R.; Carrilho, F.; Carvalho, J.; Custódio, S.; Dias, Nuno; Fernandes, R.; Moreira, M.; Seixas, T.; Silva, M.; Quental, L.Portugal joined the effort to create the EPOS infrastructure in 2008, and it became immediately apparent that a national network of Earth Sciences infrastructures was required to participate in the initiative. At that time, FCT was promoting the creation of a national infrastructure called RNG - Rede Nacional de Geofísica (National Geophysics Network). A memorandum of understanding had been agreed upon, and it ...