A5032591097- Geological and Geochemical Analysis
- Geology and Paleoclimatology Research
- earthquake and tectonic studies
- Geological and Geophysical Studies
- Geological formations and processes
- High-pressure geophysics and materials
- Geological and Geophysical Studies Worldwide
- Paleontology and Stratigraphy of Fossils
- Geomagnetism and Paleomagnetism Studies
- Geochemistry and Geologic Mapping
- Seismic Waves and Analysis
- Seismic Imaging and Inversion Techniques
- Heavy metals in environment
- Underwater Acoustics Research
- Methane Hydrates and Related Phenomena
- Disaster Management and Resilience
- Cryospheric studies and observations
- Astro and Planetary Science
- Meteorological Phenomena and Simulations
- Pleistocene-Era Hominins and Archaeology
- Archaeology and ancient environmental studies
- Marine Biology and Ecology Research
- Flood Risk Assessment and Management
- Planetary Science and Exploration
- Marine and coastal ecosystems
Universidade dos Açores
2015-2024
Centro de Investigação em Biodiversidade e Recursos Genéticos
2020
ABSTRACT A synthetic model is presented to enlarge the evolutionary framework of General Dynamic Model (GDM) and Glacial Sensitive (GSM) oceanic island biogeography from terrestrial marine realm. The proposed ‘Sea‐Level Sensitive’ dynamic (SLS) integrates historical ecological with patterns glacio‐eustasy, merging concepts areas as diverse taxonomy, biogeography, biology, volcanology, sedimentology, stratigraphy, palaeontology, geochronology geomorphology. Fundamental SLS variation littoral...
Furnas is one of three active central volcanoes on São Miguel Island, Azores, and considered to be the most hazardous in archipelago. In this study, pre-eruptive magma plumbing system 10 young (<5 ka), intra-caldera, sub-Plinian, trachytic eruptions Upper Group (UFG) investigated via whole rock major trace element geochemistry, mineral chemistry, thermobarometry, petrogenetic modelling. The main aim work elucidate petrogenesis trachytes, constrain P–T–fO2 conditions under which they evolve,...
The location of the Azores Archipelago makes this group islands an excellent setting for investigating past long-term temperature and precipitation changes in central North Atlantic region. Here, we present a chironomid-based quantitative reconstruction record oxygen isotope composition chironomid head capsules last ca. 1200 years, based on Lake Prata core (São Miguel Island, Azores). Chironomids from show that trend is aligned with prevailing global trends, indicating warming during...
Research Article| September 01, 2014 Constraining chronology and time-space evolution of Holocene volcanic activity on the Capelo Peninsula (Faial Island, Azores): The paleomagnetic contribution Anita Di Chiara; Chiara † 1Istituto Nazionale di Geofisica e Vulcanologia–Roma, Via Vigna Murata, 605, 00143 Roma, Italy2Università degli Studi Bologna, Dipartimento Fisica Astronomia, Viale Berti Pichat, 6/2, 40127, Italy3Departamento de Geofísica, Instituto Geofísica Ciências...
The mafic magmatism of the last 50 ka on Terceira Island, Azores archipelago, occurred along three segments fissure zone that crosses island. two subaerial developed with different trends over pre-existing, quiescent or extinct, central volcanoes. Serreta submarine ridge is offshore segment erupted recently in 1998-2001. combined study CO2+H2O fluid inclusions hosted minerals and rock geochemistry magmas, reveals storage ascent conditions among segments. maximum pressure trapping for all...
High-resolution morpho-bathymetric data at 1:200,000 scale obtained during the FAIVI cruise (2011) and resulting geomorphologic map of Terceira island offshore area (central Azores, Portugal) are presented for first time. The uneven morphology around is primarily related to volcanic features, such as linear cone-shaped eruptive centres lava flows. Such features mostly concentrated on ridges aligned along preferential axes, suggesting a strong interaction between tectonics processes....
Research Article| January 01, 2014 Relationships between tectonics and magmatism in a transtensive/transform setting: An example from Faial Island (Azores, Portugal) D. Trippanera; Trippanera † 1Dipartimento di Scienze, Università Roma Tre, Largo S.L. Murialdo, 1, 00146 Rome, Italy †E-mail: daniele.trippanera@uniroma3.it Search for other works by this author on: GSW Google Scholar M. Porreca; Porreca 2Centro de Vulcanologia e Avaliação Riscos Geológicos, Rua da Mãe Deus, 9501-801 Ponta...
Abstract Volcano observatories (VOs) around the world are required to maintain surveillance of their volcanoes and inform civil protection aviation authorities about impending eruptions. They often work through consolidated procedures respond volcanic crises in a timely manner provide service community aimed at reducing potential impact an eruption. Within International Airways Watch (IAVW) framework Civil Aviation Organisation (ICAO), designated State Observatories (SVOs) asked operate...
Abstract São Miguel Island comprises five active volcanic systems, including three central volcanoes with calderas and two basaltic fissure systems. Volcanic eruptions in are of trachytic nature ( s.l. ), Hawaiian, Strombolian, sub-Plinian, Plinian Vulcanian events, the more explosive ones frequently hydromagmatic phases. Large related to caldera-forming events that occurred past. With reference Fogo A stratigraphic marker, a total 73 individual have been identified last 5 ka, giving...
Abstract We present new evidence that shows magma mingling can be a key process during highly explosive eruptions. Using fractal analysis of the size distribution trachybasaltic fragments found on inner walls bubbles in trachytic pumices, we show more mafic component underwent fracturing quenching against trachyte. propose mechanism for how this magmatic interaction at depth triggered rapid heterogeneous bubble nucleation and growth could have enhanced eruption explosivity. argue data...
The island of Terceira (38.5°N, 27.2°W) in the Azores Archipelago boasts a wealth well-dated recent volcanic products; it is therefore ideal location to improve resolution full-vector geomagnetic field record for Mid-Atlantic Ocean. We investigated 21 (sub-)sites sampled from 10 different cooling units; six these units are Holocene, other four approximately coeval with age known excursions. After successfully determining palaeodirections all but one site, we applied multimethod...
Sete Cidades is the westernmost central volcano of São Miguel Island, Azores. Although currently dormant, it has been most active on island in past 5 ky, with at least 17 trachytic intra-caldera explosive eruptions, some which sub-Plinian. The last paroxysmal eruption took place ~16 ka, enlarging summit caldera to its present dimensions, and recorded by Santa Bárbara Formation. It well known that eruptions pose serious hazards local communities may have worldwide impacts. However, products...