A5071818570- Atmospheric and Environmental Gas Dynamics
- Radioactivity and Radon Measurements
- Geochemistry and Geologic Mapping
- CO2 Sequestration and Geologic Interactions
- Geological and Geochemical Analysis
- earthquake and tectonic studies
- Geophysical and Geoelectrical Methods
- Radioactive contamination and transfer
- Radiation Dose and Imaging
- Earthquake Detection and Analysis
- Methane Hydrates and Related Phenomena
- Marine and coastal ecosystems
- Hydrocarbon exploration and reservoir analysis
- Groundwater and Isotope Geochemistry
- Seismic Waves and Analysis
- Occupational Health and Safety Research
- Geophysical Methods and Applications
- Geological Studies and Exploration
- Planetary Science and Exploration
- Geology and Paleoclimatology Research
- Marine Bivalve and Aquaculture Studies
- Marine Biology and Ecology Research
- Fire effects on ecosystems
- Geological and Geophysical Studies Worldwide
- Ocean Acidification Effects and Responses
Universidade dos Açores
2015-2024
Institute of Volcanology and Seismology
2016
Novem (Netherlands)
2010
Dassault Systèmes (France)
2010
Carbon dioxide (CO 2 ) diffuse degassing structures (DDS) at Furnas volcano (São Miguel Island, Azores) are mostly associated with the main fumarolic fields, evidence that CO soil is surface expression of rising steam from hydrothermal system. Locations anomalous flux mainly controlled by tectonic oriented WNW–ESE and NW–SE geomorphology volcano, as evidenced several DDS located in depressed areas crater margins. Hydrothermal emissions estimated to be ∼968 t d −1 . Discrimination between...
This project, INGE – The Earth’s Interior Through Geophysics, introduces students to the Earth's internal structure, fostering curiosity and providing a foundation for understanding geophysical concepts across educational stages. Initially designed younger before they reach upper secondary education, project highlights scalable approach ensure its future relevance diverse age groups.The project’s core objective is deliver engaging lessons about...
Abiotic formation of n-alkane hydrocarbons has been postulated to occur within Earth's crust.Apparent evidence was primarily based on uncommon carbon and hydrogen isotope distribution patterns that set methane its higher chain homologues apart from biotic isotopic compositions associated with microbial production closed system thermal degradation organic matter.Here, we present the first global investigation n-alkanes in volcanic-hydrothermal fluids hosted by basaltic, andesitic, trachytic...
Abstract Time series of soil CO 2 efflux recorded in the Azores archipelago volcanic‐hydrothermal areas feature daily and seasonal variations. The values were lower during summer than winter season. diurnal higher at dawn early afternoon, contrary to that observed biogenic environments. cycles correlated well with environmental variables, such as air temperature, wind speed, barometric pressure, which also showed low‐ high‐frequency periodicities. Several simulations performed here using...
Accurate geophysical imaging of shallow subsurface features provides crucial constraints on understanding the dynamics volcanic systems. At Furnas Volcano (Azores), intense circulation fluids at depth leading to high CO2 outgassing and flank destabilization poses considerable threat local population. Presented is a novel 3-D electrical resistivity model developed from 39 magnetotelluric soundings that images hydrothermal system 1 km. The two conductive zones, one 100 m another 500 depth,...
Recent geophysical evidence for large-scale regional crustal inflation and localized magma intrusion has made Lastarria volcano (northern Chile) the target of numerous geological, geophysical, geochemical studies. The chemical composition volcanic gases sampled during discrete campaigns from indicated a well-developed hydrothermal system direct fumarole samples in A.D. 2006, 2008, 2009, shallow degassing using measurements situ plume sampling techniques 2012. It is unclear if differences...
Abstract Substantial terrestrial gas emissions, such as carbon dioxide (CO 2 ), are associated with active volcanoes and hydrothermal systems. However, while fundamental for the prediction of future activity, it remains difficult so far to determine depth sources. Here we show how combined measurement CO radon-222 fluxes at surface constrains degassing two systems in geodynamically contexts: Furnas Lake Fumarolic Field (FLFF, Azores, Portugal) mantellic volcano-magmatic , Syabru-Bensi...
Monitoring soil CO2 diffuse degassing areas has become more relevant in the last decades to understand seismic and/or volcanic activity. These studies are specially valuable for without visible manifestations of volcanism, such as fumaroles or thermal springs. The development and installation permanent flux instruments allowed acquire long time series different environments, results obtained highlight influence environmental variables on gas variations. A station is installed at Caldeiras da...
The Azores archipelago is located in the North Atlantic Ocean and formed by nine volcanic islands. Present-day activity comprises not only seismic swarms episodes of ground deformation some volcanoes, but also hydrothermal gas manifestations. main fumaroles are associated with central quiescent volcanoes have been sampled past decade through Giggenbach methodology. Analysis fumarolic fluids from four systems São Miguel, Terceira, Graciosa islands displayed for period between July 2015...
Carbon dioxide released permanently from soils in diffuse degassing areas may constitute a permanent hazard for the population. Several villages Azores archipelago (Portugal) are placed with anomalous soil CO 2 and lethal indoor concentration (>10 vol%) has been already recorded some buildings. The 2021-2022 dislodgements of population at Vulcano (Italy) La Palma (Spain) volcanic islands due to high highlight importance defining criteria produce human exposure risk maps, which useful...
Furnas Volcano is a dormant central volcano located in the eastern part of São Miguel Island (Azores archipelago, Portugal). The last volcanic eruption this system took place 1630 causing about 200 victims. Present-day activity comprises fumarolic fields, thermal and cold CO 2 -rich springs soil diffuse degassing areas. diffusely released from soils was estimated at ~ 0.4 Mt y –1 . Only 14% emission has biogenic origin, highest amount emitted being mantle derived. Hydrothermal same order...
Abstract Furnas Caldera Volcanic Complex, São Miguel Island (Azores), last erupted in 1630 and is famous for its intense hydrothermal activity (i.e. fumarolic fields, thermal springs, cold CO 2 -rich mineral waters diffuse soil emanations), which directly affect the villages of Ribeira Quente. Here we report first systematic investigations mapping radon ( 222 Rn) emanations examine their potential health risks local inhabitants. Rn volcanic soils (60 cm depth) was repeatedly measured between...
Abstract Soil CO 2 diffuse degassing constitutes a permanent risk in quiescent volcanic–hydrothermal areas, as is the case Azores archipelago. Since early 1990s geochemical studies carried out São Miguel Island showed that some villages are placed anomalous high and indoor measurements performed various dwellings highlight to population. These concentrations not only measured areas classified but lethal also registered buildings located previously defined low- medium-risk zones. values...
The Azores archipelago is composed of nine volcanic islands located at the triple junction between North American, Eurasian and Nubian plates. Nowadays activity in characterized by presence secondary manifestations volcanism, such as hydrothermal fumaroles, thermal cold CO2-rich springs well soil diffuse degassing areas, low magnitude seismicity. Soil CO2 (concentration flux) surveys have been performed Pico, Faial São Jorge to identify possible structures. Since settlement 15th Century...
Chemical and isotopic vertical profiles from the volcanic lakes of Sete Cidades, Santiago, Fogo, Congro Furnas (Island São Miguel, Azores Archipelago, Portugal) were studied to investigate biogeochemical processes acting at different depths, with a focus on CO2 CH4 dynamics. These are fed by meteoric water affected seawater spray interacting rocks relatively low extent. In addition volcanogenic gas inputs, influenced microbial activities since offer specialized ecological niches for oxic...