Article
Geochemistry & Geophysics
Carla Candeias, Paula Freire Avila, Celia Alves, Carla Gama, Cristina Sequeira, Eduardo Ferreira da Silva, Fernando Rocha
Summary: The study examined the impact of volcanic eruptions on Fogo Island in Cape Verde, analyzed the contribution of lava and desert dust to air quality, and found potential health risks through the analysis of dust samples.
Article
Multidisciplinary Sciences
Carmen del Fresno, Simone Cesca, Andreas Kluegel, Itahiza Dominguez Cerdena, Eduardo A. Diaz-Suarez, Torsten Dahm, Laura Garcia-Canada, Stavros Meletlidis, Claus Milkereit, Carla Valenzuela-Malebran, Ruben Lopez-Diaz, Carmen Lopez
Summary: The 2021 volcanic eruption at La Palma, Canary Islands, was the largest in the island's history. A study using seismological methods found a long preparatory phase with the destabilization of an intermediate reservoir and a co-eruptive phase with seismic activity controlled by the drainage and interaction of two reservoirs.
NATURE COMMUNICATIONS
(2023)
Article
Multidisciplinary Sciences
Melodie-Neige Cornu, Raphael Paris, Regis Doucelance, Patrick Bachelery, Chantal Bosq, Delphine Auclair, Mhammed Benbakkar, Abdel-Mouhcine Gannoun, Herve Guillou
Summary: This study analyzes the chemical composition and age-controlled stratigraphy of lavas from Fogo volcano before and after a major flank collapse to track time variations and links between lithospheric, crustal, and surface processes. The findings reveal variations in magma differentiation, storage reorganization, and lithospheric assimilation following the collapse.
SCIENTIFIC REPORTS
(2021)
Article
Geosciences, Multidisciplinary
Joana Carvalho, Graca Silveira, Stephanie Dumont, Ricardo Ramalho
Summary: This study analyzed seismic data from Fogo volcano to create a 3D shear-wave velocity model of the volcano's crust. The model revealed multiple velocity layers, with a high-velocity body in the southwestern sector believed to be related to long-term surface deformation and intrusions. A high-velocity horizontal layer beneath the volcanic edifice was interpreted as cooled intrusions. The study also found no significant magma chambers within the volcano. These findings demonstrate the importance of 3D ambient noise Rayleigh wave tomography in understanding the structure of volcanic islands.
JOURNAL OF VOLCANOLOGY AND GEOTHERMAL RESEARCH
(2022)
Article
Geology
A. Caracciolo, S. A. Halldorsson, E. Bali, E. W. Marshall, H. Jeon, M. J. Whitehouse, J. D. Barnes, G. H. Gudfinnsson, M. Kahl, M. E. Hartley
Summary: This study investigates the interaction between crustal rocks and ascending magmas in the Bar3arbunga volcanic system in Iceland using oxygen isotope and trace element data. The results show that the interaction leads to chemical modifications and the degree of contamination is related to magma equilibration depth.
Article
Geochemistry & Geophysics
Carola Leva, Georg Ruempker, Ingo Woelbern
Summary: Seismic arrays provide a localization tool for events without clear phases or events outside the network. By combining multiple arrays, event epicentres can be retrieved from intersecting beam areas without specifying a velocity model. The analysis is performed in the time domain, allowing for a narrow time window selection while preserving frequency bandwidth.
Article
Geosciences, Multidisciplinary
Gladys V. V. Melian, Pedro A. A. Hernandez, Nemesio M. M. Perez, Maria Asensio-Ramos, Eleazar Padron, Mar Alonso, German D. Padilla, Jose Barrancos, Francesco Sortino, Hirochicka Sumino, Fatima Rodriguez, Cecilia Amonte, Sonia Silva, Nadir Cardoso, Jose M. Pereira
Summary: The geochemical monitoring of fumarolic discharges at Pico do Fogo volcano in Cape Verde from 2007 to 2016 revealed variations in fluid source contributions and fractionation processes, with clear increases in vapor fraction and CO2/CH4 ratios observed during specific time periods. The results support the importance of monitoring the chemical and isotopic composition of fumaroles for understanding magmatic-hydrothermal processes and predicting volcanic unrest episodes.
FRONTIERS IN EARTH SCIENCE
(2021)
Article
Geochemistry & Geophysics
A. K. Barker, E. Magnusson, V. R. Troll, C. Harris, H. B. Mattsson, P. M. Holm, F. J. Perez-Torrado, J. C. Carracedo, F. M. Deegan
Summary: Our objective is to investigate the nature of the lithologies of the mantle sources involved in the petrogenesis of historic volcanic rocks from Fogo, Cape Verde. The study reveals various magma batches mixed beneath Fogo, with HIMU and EM1 endmembers identified as the mantle sources. The presence of carbonated eclogite and variably carbonated peridotite is indicated, along with the contribution of carbonatite melts to alkaline magma compositions at Fogo.
Article
Geosciences, Multidisciplinary
Carla Candeias, Paula F. Avila, Cristina Sequeira, Albuquerque Manuel, Fernando Rocha
Summary: Volcanic eruptions can have direct and indirect impacts on ecosystems, affecting the soil-plant system and potentially leading to health risks from consuming contaminated plants. A study on Fogo island in Cape Verde Republic found widespread pollution in soil and edible plants, mainly due to mercury and nickel, with potential negative health outcomes linked to arsenic, chromium, copper, and zinc contamination.
Article
Geosciences, Multidisciplinary
F. Amato, F. Pace, A. Vergnano, C. Comina
Summary: Groundwater resource assessment is crucial for agriculture in arid conditions. This study utilized Time Domain Electromagnetic Method (TDEM) for groundwater prospection in a vineyard on Fogo Island, Cape Verde. The results, obtained through various inversion algorithms, showed a consistent resistivity distribution, with evidence of a thick conductive region in the subsurface of the vineyard.
JOURNAL OF APPLIED GEOPHYSICS
(2021)
Article
Geochemistry & Geophysics
Stephanie Dumont, Graca Silveira, Susana Custodio, Fernando Lopes, Jean-Louis Le Mouel, Mathieu Gouhier, Yannick Guehenneux
Summary: Volcanic eruptions are the result of the complex interaction between internal and external processes, with their temporal evolution influenced by tidal forces. The effusive activity at Fogo volcano in Cape Verde from 2014-2015 showed that magma movement, gas emission, and crustal depths are modulated by lunisolar gravitational forces.
PHYSICS OF THE EARTH AND PLANETARY INTERIORS
(2021)
Article
Chemistry, Analytical
Rosa Marques, Maria Prudencio, Dulce Russo, Guilherme Cardoso, Maria Dias, Ana L. Rodrigues, Mario Reis, Marta Santos, Fernando Rocha
Summary: Natural radionuclides K, Th and U were evaluated for the first time in volcanic soils of Fogo Island, showing higher mobilization of potassium and particularly U in older soils, resulting in a higher radon loss. The external dose rate varies between 0.97 and 3.47 Gy/y. The results provide a benchmark for further studies, particularly regarding the impact of the 2014-2015 volcanic episode on Fogo Island.
JOURNAL OF RADIOANALYTICAL AND NUCLEAR CHEMISTRY
(2021)
Article
Geosciences, Multidisciplinary
Mar Alonso, Nemesio M. Perez, Eleazar Padron, Pedro A. Hernandez, Gladys V. Melian, Hirochika Sumino, German D. Padilla, Jose Barrancos, Fatima Rodriguez, Samara Dionis, Maria Asensio-Ramos, Cecilia Amonte, Sonia Silva, Jose Manuel Pereira
Summary: The study reveals that the maximum mantle-derived composition of helium isotopes at the summit crater occurred in November 2013, followed by an eruption in November 23, 2014. The temporal evolution of He-3 and mantle He-4 emissions showed similar trends, closely related to thermal energy release.
JOURNAL OF VOLCANOLOGY AND GEOTHERMAL RESEARCH
(2021)
Article
Multidisciplinary Sciences
Galina Yaroshenko, Ivan Koulakov, Nassir Al-Arifi, Saleh Qaysi, Sami El Khrepy
Summary: Semisopochnoi Island, a remote volcanic island in the Northern Pacific, is an important site for studying volcanic hazards. By analyzing seismic data, researchers have created a model that reveals the structure and magma plumbing system of the island. The study identifies a stable magma conduit and reservoir beneath a caldera, providing valuable insights for volcanic hazard assessment in the region.
SCIENTIFIC REPORTS
(2022)
Article
Green & Sustainable Science & Technology
Cristina Oliveira, Paulo Rita, Sergio Moro
Summary: This paper focuses on analyzing data extracted from online reviews written by tourists visiting island destinations, filling a gap in the existing scientific literature. By applying text mining to a large dataset, results regarding hotels, restaurants, and tourist attractions are discussed.
Article
Geosciences, Multidisciplinary
Pim Kaskes, Sietze J. de Graaff, Jean-Guillaume Feignon, Thomas Dehais, Steven Goderis, Ludovic Ferriere, Christian Koeberl, Jan Smit, Axel Wittmann, Sean P. S. Gulick, Vinciane Debaille, Nadine Mattielli, Philippe Claeys
Summary: This study presents a new classification of a similar to 100-m-thick crater suevite sequence, providing valuable insights into the formation and sedimentary processes of suevite on top of the Chicxulub peak ring. The data set obtained from this study sheds light on the dynamics and timing of proximal marine cratering processes following a large impact event.
GEOLOGICAL SOCIETY OF AMERICA BULLETIN
(2022)
Article
Geosciences, Multidisciplinary
Ricardo Pereira, Joao Mata, Ricardo S. Ramalho, Filipe M. Rosas, Beatriz Silva, Patricia Represas, Claudia Escada
Summary: The magma-poor West Iberian Margin in the Peri-Atlantic alkaline province has shown evidence of important magmatic activity through large volcanic and intrusive features recorded in high-resolution multichannel seismic data. The magmatism in the region occurred during two main pulses and types of activity, including fissural and fault-controlled volcanism characterized by massive lobate/sheet lava flows, as well as a second event of mid to late Campanian age with the Estremadura Spur laccolith and Fontanelas compound volcano. The estimated total volume of rock emplaced or extruded in this relatively short period exceeds 1.452 km³, highlighting the significance of magmatism in this sector of the West Iberian Margin.
Article
Geochemistry & Geophysics
R. Omira, M. A. Baptista, R. Quartau, R. S. Ramalho, J. Kim, I Ramalho, A. Rodrigues
Summary: This paper investigates the hazard extent of tsunamis triggered by coastal cliff-failures, focusing on the March 4th, 1930 event in Madeira. The study combines historical description, morphological analysis, and numerical modelling to understand the tsunamigenesis and propose a new conceptual model. The research provides important insights for hazard prevention and mitigation on volcanic ocean islands.
EARTH AND PLANETARY SCIENCE LETTERS
(2022)
Article
Geosciences, Multidisciplinary
Joana Alexandra Ferreira, Ines Pereira, Telmo Bento dos Santos, Joao Mata
Summary: The Figueira de Castelo Rodrigo-Lumbrales Anatectic Complex in the Central Iberian Zone has been studied for its metamorphic ages and exhumation history. The complex experienced peak metamorphism 316.8 +/- 2.0 million years ago, followed by rapid cooling and exhumation. The zircon ages of the complex are similar to those of the Excomungada Formation, suggesting a shared geological history. The detrital zircon ages of the Pinhao Formation indicate different sources from the Beiras Group, indicating the presence of a geological barrier. This study provides new insights into the geological evolution of the region.
JOURNAL OF THE GEOLOGICAL SOCIETY
(2022)
Article
Geochemistry & Geophysics
Claudia Escada, Patricia Represas, Fernando Santos, Ricardo Pereira, Joao Mata, Filipe M. Rosas
Summary: This study uses potential field data and seismic reflection data to describe and characterize the geometry and nature of magmatic features located near the Estremadura Spur on the West Iberian Margin. The results show that these magmatic features have different properties and shapes, providing important evidence to better understand the magmatic activity in the region.
Article
Geochemistry & Geophysics
Kirsten Elger, Geertje ter Maat, Rita Caldeira, Corrado Cimarelli, Fabio Corbi, Stephane Dominguez, Martyn Drury, Francesca Funiciello, Otto Lange, Audrey Ougier-Simonin, Matthias Rosenau, Richard Wessels, Ernst Willingshofer, Aldo Winkler
Summary: The Multi-scale Laboratories (MSL) is a network of European laboratories that aims to facilitate research collaboration and provide a platform for researchers to showcase their data, equipment, and information. It offers a fully operational data publication chain tailored to the needs of laboratory research, ensuring the findability, accessibility, interoperability, and reusability of research data.
ANNALS OF GEOPHYSICS
(2022)
Article
Environmental Sciences
Elena C. Maters, Daniel S. Mulholland, Pascal Flament, Jeroen de Jong, Nadine Mattielli, Karine Deboudt, Guillaume Dhont, Eugene Bychkov
Summary: Atmospheric deposition is an important way for iron to enter the ocean. Various natural and anthropogenic particles can deliver iron to the ocean. Iron isotope analysis is a potential method to trace the sources of iron. However, it is uncertain how the iron isotope signatures of particles may be modified during atmospheric transport. This experimental study found that dissolution and isotopic fractionation occur during atmospheric processing, which may affect the release of iron.
Article
Geochemistry & Geophysics
J. Carvalho, G. Silveira, S. Kiselev, S. Custodio, R. S. Ramalho, E. Stutzmann, M. Schimmel
Summary: In this study, a seismic ambient noise tomography was performed to construct a 3D velocity model of the crust and uppermost mantle beneath the Cape Verde archipelago. The results revealed variations in velocity and detailed structures of the crust and uppermost mantle.
GEOPHYSICAL JOURNAL INTERNATIONAL
(2022)
Article
Multidisciplinary Sciences
R. Omira, R. S. Ramalho, J. Kim, P. J. Gonzalez, U. Kadri, J. M. Miranda, F. Carrilho, M. A. Baptista
Summary: Volcanoes can generate tsunamis through various mechanisms, with violent volcanic explosions having the potential to cause global tsunamis. The eruption of the Hunga Tonga-Hunga Ha'apai volcano and the resulting tsunami provide a unique opportunity to study the role of air-water coupling processes in tsunami generation and propagation. The study reveals that the tsunami was driven by a constantly moving source, with acoustic-gravity waves exciting the ocean and transferring energy through resonance. The coupling mechanism leads to higher waves along land masses that abruptly rise from deep ocean waters.
Article
Geochemistry & Geophysics
David Schlaphorst, Graca Silveira, Joao Mata, Frank Krueger, Torsten Dahm, Ana M. G. Ferreira
Summary: This study investigates seismic anisotropy beneath the Madeira and Canary hotspots using a dense set of shear wave splitting observations. The results reveal heterogenous flow patterns and suggest that melt pocket orientation in magma reservoirs influence the flow patterns. Additionally, the presence of a mantle plume leads to complex and small-scale heterogeneous anisotropy observations.
GEOPHYSICAL JOURNAL INTERNATIONAL
(2023)
Article
Geosciences, Multidisciplinary
Gabriella de Oliveira Amaral Quaresma, Anderson Costa dos Santos, Eduardo Reis Viana Rocha Jr, Juliana Bonifacio, Caio Assumpcao Queiroz Rego, Joao Mata, Claudio de Morisson Valeriano, Fred Jourdan, Nadine Mattielli, Mauro Cesar Geraldes
Summary: This study presents the first integrated analysis of the Sr-Nd-Pb isotopic compositions of Davis Bank and suggests that the formation of Davis Bank involves the participation of one or several enriched components. A HIMU-type pyroxenite is proposed as one of these enriched components. Modeling of the isotopic data reveals that the isotopic composition of Davis Bank is mainly achieved by the mixing of a dominant asthenospheric component (DMM) with EMI and HIMU melts. The Trindade Plume hypothesis lacks convincing evidence, and it is suggested that the Vit ' oria-Trindade Ridge is a surface manifestation of upwelling flow attributed to abnormal fertile shallow sources within a depleted mantle matrix.
JOURNAL OF SOUTH AMERICAN EARTH SCIENCES
(2023)
Article
Geosciences, Multidisciplinary
Anderson Costa dos Santos, Gabriella de Oliveira Quaresma, Julio Cezar Mendes, Joao Mata, Mauro Cesar Geraldes, Fred Jourdan, Werlem Holanda dos Santos, Cecilia Pavon Pivetta, Leonardo Benedini, Daniel Gregori
Summary: This article focuses on the rock characteristics and geological background of the Davis Bank region, located offshore of the Eastern Brazilian margin. The study utilizes methods such as rock age determination and isotope analysis to obtain geological information and reveal significant insights into plate tectonics, volcanic rock evolution, and magma properties in this area.
JOURNAL OF SOUTH AMERICAN EARTH SCIENCES
(2023)
Article
Plant Sciences
Carlos A. Gois-Marques, Lea de Nascimento, Jose Maria Fernandez-Palacios, Jose Madeira, Miguel Menezes de Sequeira
Summary: This study discusses the systematic affinities of the first wind-pollinated besom heaths fossils found in the Macaronesia, assigning them to a species within the Palaearctic Erica sect. Chlorocodon. The fossils suggest a colonization of Madeira Island prior to 1.3 Ma, indicating the presence of wind-pollinated besom heaths since at least the early Pleistocene.
Article
Thermodynamics
Jorge Sousa, Joao Lagarto, Cristina Camus, Carla Viveiros, Filipe Barata, Pedro Silva, Ricardo Alegria, Orlando Paraiba
Summary: The EU Renewable Energy Directive has allowed local citizens and authorities to participate in collective renewable energy projects through Renewable Energy Communities (REC). This study proposes an optimization model to support REC's investment decisions on renewable generation and electricity sharing management. The model considers annualized investment optimization, and a case study with three REC members is presented, discussing the results using levelized cost of electricity and marginal realized price concepts, as well as performing a sensitivity analysis for solar and wind resources.
Article
Geochemistry & Geophysics
Huichuan Liu, Alan R. Hastie, Chiara Maria Petrone
Summary: This study conducted isotope analyses on two ocean island basalt (OIB)-associated enriched mafic intrusions in the Yunnan-Burma region, and found that these rocks may have originated from the subduction recycling of marine sediments and altered oceanic crust.
Article
Geochemistry & Geophysics
L. Notini, M. Scambelluri, A. Tommasi, A. Zanetti, F. Ferri, A. Rodriguez-Vargas, E. Rampone
Summary: This study provides important petrologic information on the mantle wedge above an active subduction zone in Southern Colombia. The researchers analyzed a unique suite of rock samples and found evidence of hydration, metasomatism, and partial melting in the mantle wedge. They also observed variations in lithotypes, textures, and mineral abundance, indicating different interactions with melts and fluids. This study sheds light on the complex petrological processes occurring in the mantle wedge and contributes to our understanding of subduction zone dynamics.
Article
Geochemistry & Geophysics
Sourav Bhattacharjee, Aniket Chakrabarty, Roger H. Mitchell, Suresh Chandra Patel, Evgeniy N. Kozlov, Ekaterina N. Fomina, Monojit Dey, Supratim Pal
Summary: The Hogenakkal complex in India consists of silicate-rich and silicate-poor carbonatites and clinopyroxenites. The formation of carbonatite is influenced by silicate minerals. The carbohydrothermal mineralization in the carbonatites is induced by magma-derived fluids and interactions with the surrounding rocks.
Article
Geochemistry & Geophysics
Jia-Min Wang, Kyle Patrick Larson, Jin-Jiang Zhang, Liang Zhao, Fu-Yuan Wu
Summary: The role of collisional belts in the global carbon budget is controversial. This study reveals a previously unrecognized carbon source in the collisional orogen of the Himalayas, where metamorphism of carbonate-bearing rocks in the hanging wall resulted in significant CO2 degassing.
Article
Geochemistry & Geophysics
Joseph Martial Akame, Elson Paiva Oliveira, Vinciane Debaille, Marc Poujol, Bernhard Schulz, Dieudonnee Bisso, Fabien Humbert, Serge Parfait Koah Na Lebogo, Philmont Zo'o Zame
Summary: Archean granitoids play key roles in the crustal evolution and can provide important insights into early geologic processes.
Article
Geochemistry & Geophysics
Xiguang Huang, Jun He, Jingxin Zhao, Jingzhao Dou, Weiyong Li, Aimin Hu, Ge Liu, Yiru Ji, Fukun Chen, Shuangqing Li
Summary: This study investigates the zircon ages and whole-rock geochemical data of Late Paleozoic magmatic rocks in the Western Yunnan Tethyan belt to identify the origin and mechanism of mantle melting. The results suggest that these magmatic rocks may originate from different mantle domains that were metasomatized by slab-derived fluids and sediment-derived melts.