Article
Geochemistry & Geophysics
Marcello Liotta, Maria Martinez Cruz, Arnoldo Ferrufino, Julian Ruediger, Alexandra Gutmann, Kathia V. Rojas Cerda, Nicole Bobrowski, Maarten de Moor
Summary: The study conducted at Masaya volcano reveals that the volcanic emissions leave a chemical signature in rainfall, including acidic gases, solid particles, and silicate particles. The elements released from the volcano exhibit distinct differences from the local background elements and show different distribution patterns in rainwater.
Article
Environmental Sciences
Matthew Varnam, Mike Burton, Ben Esse, Giuseppe Salerno, Ryunosuke Kazahaya, Martha Ibarra
Summary: This study tested two SO2 camera calibration approaches at Masaya volcano and demonstrated the importance of correcting for light dilution in accurately measuring volcanic emission rates. The results show that combining traverses and SO2 camera techniques can generate more reliable emission rate estimates.
Article
Geochemistry & Geophysics
Lisa Hlinka, Marc-Antoine Longpre, Wendy Perez, Steffen Kutterolf, Brian Monteleone
Summary: The highly explosive Plinian eruptions of basaltic magma at Masaya volcano are enigmatic due to low melt viscosities. However, pre-eruptive volatile contents show systematic differences between lava lake and Plinian samples, suggesting that eruption style may be related to degassing processes and volatile contents. The volcano's magmatic system is compositionally buffered and undergoes extensive pre-eruptive degassing at low pressure, implying that the eruption style is controlled by a top-down modulation of magma supply.
EARTH AND PLANETARY SCIENCE LETTERS
(2021)
Article
Geosciences, Multidisciplinary
Ryunosuke Kazahaya, Matthew Varnam, Ben Esse, Mike Burton, Hiroshi Shinohara, Martha Ibarra
Summary: Multi-disciplinary observations of volcanic gases were conducted at Masaya Volcano in Nicaragua in January 2018. The composition of the gases showed good consistency with previous studies, except for a lower than expected concentration of the combustible component H-2. It was found that the volcanic gases undergo oxidation with high-temperature air, leading to a decrease in the H-2 content. In contrast, CO was found to be kinetically inert.
FRONTIERS IN EARTH SCIENCE
(2022)
Article
Geosciences, Multidisciplinary
Alejandro Rodriguez-Trejo, Luis Manuel Alva-Valdivia, Bernardo I. Garcia-Amador
Summary: The Central America Volcanic Arc has been experiencing continuous volcanic activity for the past 10,000 years due to subduction processes. The coastal Nicaraguan region has seen several volcanic events characterized by explosive or effusive activity. The volcanic deposits have similar composition, suggesting a long-lived magma chamber cooled by various mechanisms.
JOURNAL OF VOLCANOLOGY AND GEOTHERMAL RESEARCH
(2023)
Article
Geosciences, Multidisciplinary
Simone Cogliati, Sarah Sherlock, Alison Halton, Kerry Reid, Hazel Rymer, Simon Kelley
Summary: The study suggests that noble gases trapped in Pele's hairs and tears can be used as a tool to monitor degassing processes in volcanic systems. Variations in noble gas abundances in samples collected from Masaya volcano are attributed to factors like magma migration and vesicle characteristics. Monitoring noble gases provides insights into volcanic activity and can be applied to other persistently degassing systems.
JOURNAL OF VOLCANOLOGY AND GEOTHERMAL RESEARCH
(2021)
Article
Geosciences, Multidisciplinary
Julie Calkins, Pierre Delmelle
Summary: The study assessed fluoride intakes in children and adults living downwind of Masaya Volcano in Nicaragua, finding that children are at risk of dental fluorosis and water is usually the primary exposure route for adults. Overexposure to fluoride is less common in adults, with inhalation also playing an important role. The exposure assessment provides a simple screening tool to identify pathways driving the health risk and target efforts to remediate exposure levels effectively.
BULLETIN OF VOLCANOLOGY
(2021)
Article
Multidisciplinary Sciences
Daniel J. Rasmussen, Terry A. Plank, Diana C. Roman, Mindy M. Zimmer
Summary: Efforts in forecasting volcanic eruptions are now focusing on physics-based models that require accurate estimation of magma conditions prior to eruption. Observed magma storage depths below active volcanoes vary widely and have commonly been assumed to represent neutral buoyancy levels, but our research shows that geophysically observed depths are greater than neutral buoyancy depths and are consistent with depths of water degassing. The relationship between water depth and magma provides a critical constraint for forecasting models.
Article
Chemistry, Multidisciplinary
Andrea L. Rizzo, Philippe Robidoux, Alessandro Aiuppa, Andrea Di Piazza
Summary: The study of fluid inclusions (FIs) trapped in volcanic rocks is an important method in geochemical research, providing insights into volcanic activity and interaction with crustal fluids, and helping to evaluate magmatic features and volcanic hazards.
APPLIED SCIENCES-BASEL
(2022)
Article
Geosciences, Multidisciplinary
Kirsten J. Stephens, Christelle Wauthier
Summary: Volcanic unrest in calderas can manifest in various ways, including changes in seismic activity, ground deformation, and thermal and gas emissions. This study examines the long-term ground deformation at Masaya using Interferometric Synthetic Aperture Radar (InSAR) datasets from 2011 to 2019. The study reveals that Masaya exhibited bi-modal eruptive behavior dominated by lava lake activity, with intermittent summit explosions during this period.
BULLETIN OF VOLCANOLOGY
(2022)
Article
Geochemistry & Geophysics
Evelyn Furi, Maxim Portnyagin, Nikita Mironov, Cecile Deligny, Andrey Gurenko, Roman Botcharnikov, Francois Holtz
Summary: The study indicates that the arc magmas feeding the Klyuchevskoy volcano contain significant amounts of nitrogen and carbon dioxide derived from the subducting slab, which are partially returned to the crust and atmosphere through arc-related magmatism.
Article
Environmental Sciences
Emily Mason, Penny E. Wieser, Emma J. Liu, Marie Edmonds, Evgenia Ilyinskaya, Rachel C. W. Whitty, Tamsin A. Mather, Tamar Elias, Patricia Amanda Nadeau, Thomas C. Wilkes, Andrew J. S. McGonigle, Tom D. Pering, Forrest M. Mims, Christoph Kern, David J. Schneider, Clive Oppenheimer
Summary: Research shows that lava-seawater interaction plumes have elevated concentrations of chloride-complexing metals, while magmatic plumes emitted at volcanic vents contain abundant volatile metals and metalloids. Emissions of these metals may have significant impacts on the biosphere.
COMMUNICATIONS EARTH & ENVIRONMENT
(2021)
Article
Environmental Sciences
Zunaira Asif, Zhi Chen, Fariborz Haghighat, Fuzhan Nasiri, Jinxin Dong
Summary: This study systematically analyzes potential sources of VOCs emission in Canada's built environment and examines the spatial variation of VOCs levels in the atmosphere. The findings show that VOCs levels may vary among different microenvironments and provide possible approaches to control VOC emissions.
ENVIRONMENTAL MANAGEMENT
(2023)
Article
Engineering, Environmental
Young-Kwon Park, Hocheol Song, Min Ki Kim, Sang-Chul Jung, Ho Young Jung, Sang Chai Kim
Summary: Recycling spent alkaline batteries as catalysts for the total oxidation of hydrocarbons shows potential, with acid treatments significantly influencing the catalyst activity. Among the different acids used, sulfuric acid demonstrated the highest activity. The performance of the acid-treated catalyst was associated with high concentrations of manganese and iron as well as a large BET surface area.
JOURNAL OF HAZARDOUS MATERIALS
(2021)
Article
Chemistry, Multidisciplinary
Nga Hang Thi Phan, Chinh Chien Nguyen, Minh Tuan Nguyen Dinh
Summary: A novel glucose-assisted redox hydrothermal method was used to prepare an Mn-doped CeO2 catalyst (Mn-CeO2-R) with uniform nanoparticles, small crystallite size, large mesopore volume, and rich active surface oxygen species. The catalyst showed improved catalytic activity for the total catalytic oxidation of methanol and formaldehyde, due to its unique features. The large mesopore volume of the Mn-CeO2-R samples was found to play a crucial role in eliminating diffusion limitations and promoting the complete oxidation of toluene at high conversion. Therefore, the Mn-CeO2-R catalyst outperformed bare CeO2 and conventional Mn-CeO2 catalysts, making it a potential candidate for the catalytic oxidation of volatile organic compounds (VOCs).
Article
Multidisciplinary Sciences
Celine M. Vidal, Christine S. Lane, Asfawossen Asrat, Dan N. Barfod, Darren F. Mark, Emma L. Tomlinson, Amdemichael Zafu Tadesse, Gezahegn Yirgu, Alan Deino, William Hutchison, Aurelien Mounier, Clive Oppenheimer
Summary: This article reports new dating evidence that pushes back the age of the oldest modern human fossils in eastern Africa to before 200,000 years ago. The study also challenges previous arguments about the stratigraphic relationships and tephra correlations and provides new evidence for the minimum age of the fossils.
Article
Geochemistry & Geophysics
Annika Voigt, Michael Cassidy, Jonathan M. Castro, David M. Pyle, Tamsin A. Mather, Christoph Helo, Mirzam Abdurrachman, Idham Andri Kurniawan
Summary: This study investigates the pre-eruptive magma reservoir conditions and volatile storage capacities of the Samalas-Rinjani volcanic complex using the 1257 Samalas eruption as a case study. The results reveal that the pre-eruptive magma storage depth is significantly shallower than the currently active magma system at Rinjani. The findings suggest that accumulation of magma in one place, rather than the rapid extraction of magma from a vertically extensive system, is responsible for highly explosive eruptions of intermediate alkaline magma.
JOURNAL OF PETROLOGY
(2022)
Article
Geochemistry & Geophysics
Weiran Li, Fidel Costa, Clive Oppenheimer, Kazuhide Nagashima
Summary: Apatite can incorporate volatile and trace elements, providing important information about pre-eruptive processes in magma. This study presents a comprehensive dataset for the partitioning of volatiles and trace elements between fluorapatite and phonolitic melts, and proposes a lattice-strain model for estimating these partitioning relations under different conditions. The study also develops a new oxybarometer and reveals the reequilibration of hydrogen in melt inclusions, which has implications for magma properties and volcanic behavior. Furthermore, the findings have broad applications in the study of magma differentiation and ore formation involving fluorapatite.
CONTRIBUTIONS TO MINERALOGY AND PETROLOGY
(2023)
Article
Geochemistry & Geophysics
Z. Taracsak, T. A. Mather, S. Ding, T. Plank, M. Brounce, D. M. Pyle, A. Aiuppa
Summary: Sulfur is of crucial importance in the Earth system and plays a key role in various processes. Subduction zones significantly impact the global sulfur cycle, and arc magmas have distinct sulfur characteristics compared to mid-ocean ridge basalts. The study analyzes the sulfur isotopic composition of primary arc magmas and suggests that an oxidized slab component contributes to the elevated sulfur contents and oxidizing conditions observed in arc magmas globally.
EARTH AND PLANETARY SCIENCE LETTERS
(2023)
Article
Forestry
Ciara Greaves, Alan Crivellaro, Alma Piermattei, Paul J. Krusic, Clive Oppenheimer, Aleksei Potapov, Maris Hordo, Sandra Metslaid, Regino Kask, Ahto Kangur, Ulf Buntgen
Summary: An exceptionally high number of blue rings were formed within and between Scots pine trees from Estonia in 1976, indicating extreme autumnal cooling that has been neglected in scientific literature. The study provides a better understanding of blue rings and their ability to reveal ephemeral cooling not captured by conventional tree ring measurements. The findings highlight the importance of considering temperature fluctuations in studying tree growth patterns.
TREES-STRUCTURE AND FUNCTION
(2023)
Article
Multidisciplinary Sciences
Jun Shen, Jiubin Chen, Jianxin Yu, Thomas J. Algeo, Roger M. H. Smith, Jennifer Botha, Tracy D. Frank, Christopher R. Fielding, Peter D. Ward, Tamsin A. Mather
Summary: The Permian mass extinction was caused by volcanic activity in the Siberian Traps, and the land records from southern Pangea provide evidence of long-distance atmospheric transfer of volcanogenic mercury during this event. These findings demonstrate the far-reaching effects of the Siberian Traps and refine the stratigraphic placement of the extinction interval in the Karoo Basin.
NATURE COMMUNICATIONS
(2023)
Article
Environmental Sciences
Claire Lamotte, Virginie Marecal, Jonathan Guth, Giuseppe Salerno, Stefano Corradini, Nicolas Theys, Simon Warnach, Lorenzo Guerrieri, Hugues Brenot, Thomas Wagner, Mickael Bacles
Summary: This study investigates the impact of different estimations of SO2 emission fluxes on the modeling of volcanic plumes during the eruption of Mount Etna in 2018. Two different flux emissions were used based on ground-based and spaceborne measurements. The model results matched well with the observed plume location, but there were discrepancies in SO2 concentrations between the two simulations, attributed to the differences in emission flux estimations. The uncertainties in satellite retrievals of SO2 concentrations also posed limitations on the quantitative validation of modeled volcanic plumes.
Article
Geosciences, Multidisciplinary
Jean-Francois Smekens, Tamsin A. Mather, Mike R. Burton, Alessandro La Spina, Khristopher Kabbabe, Benjamin Esse, Matthew Varnam, Roy G. Grainger
Summary: Field-portable Open Path Fourier Transform Infrared (OP-FTIR) spectrometers are used to remotely measure the composition of volcanic plumes, providing valuable data on gas emissions. A fast retrieval algorithm is presented to estimate quantities of gas, ash, and sulphate aerosols, and the results from two pilot campaigns on Stromboli volcano are validated. The algorithm accurately identifies ash-rich plumes and gas bursts associated with explosions and quantifies the particle sizes and mass column densities of ash and sulphate aerosols in the plume.
FRONTIERS IN EARTH SCIENCE
(2023)
Article
Geosciences, Multidisciplinary
Richard N. Holdaway, Ben M. Kennedy, Brendan G. Duffy, Jiandong Xu, Clive Oppenheimer
Summary: Volcanic eruptions without historical records are often dated by comparing radiocarbon measurements of tree rings killed by the eruption with a calibration curve. However, contamination from geogenic carbon has been overlooked in these measurements. This study shows that contamination can lead to over-estimation of eruption ages and also highlights the problem of anomalously younger dates in radiocarbon series, which cannot be easily addressed at present.
JOURNAL OF VOLCANOLOGY AND GEOTHERMAL RESEARCH
(2023)
Article
Environmental Sciences
Cinzia Federico, Ornella Cocina, Salvatore Gambino, Antonio Paonita, Stefano Branca, Mauro Coltelli, Francesco Italiano, Valentina Bruno, Tommaso Caltabiano, Marco Camarda, Giorgio Capasso, Sofia De Gregorio, Iole Serena Diliberto, Roberto Maria Rosario Di Martino, Susanna Falsaperla, Filippo Greco, Giovannella Pecoraino, Giuseppe Salerno, Mariangela Sciotto, Sergio Bellomo, Giuseppe Di Grazia, Ferruccio Ferrari, Alessandro Gattuso, Leonardo La Pica, Mario Mattia, Antonino Fabio Pisciotta, Lucia Pruiti, Francesco Sortino
Summary: In September 2021, the La Fossa crater at Vulcano, Italy, showed signs of unrest. Monitoring parameters such as seismicity, GPS, tiltmeters, and geochemical analysis were used to track the sequence of effects related to the crisis. Increased seismic activity, inflation of the cone, gravity variations, and anomalies in soil and fumarole gases indicated the impending crisis. The multidisciplinary approach proved essential in interpreting the underlying processes and evaluating the hazards.
Article
Meteorology & Atmospheric Sciences
P. Sellitto, G. Salerno, S. Corradini, I. Xueref-Remy, A. Riandet, C. Bellon, S. Khaykin, G. Ancellet, S. Lolli, E. J. Welton, A. Boselli, A. Sannino, J. Cuesta, H. Guermazi, M. Eremenko, L. Merucci, D. Stelitano, L. Guerrieri, B. Legras
Summary: During the activity of Mount Etna volcano from February to April 2021, three paroxysmal events occurred, with unusual transport of upper-tropospheric plumes to the north. Observation and modeling were used to characterize the emissions, dispersion, and radiative impacts of these plumes. The results showed extreme emissions of sulfur dioxide, with plume injections at high altitudes.
JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES
(2023)
Article
Geochemistry & Geophysics
M. Gauntlett, T. Hudson, J. -M. Kendall, N. Rawlinson, J. Blundy, S. Lapins, B. Goitom, J. Hammond, C. Oppenheimer, G. Ogubazghi
Summary: Understanding the crustal structure and the movement of fluids beneath a volcano is crucial for assessing volcanic hazard and exploring geothermal potential. This study uses earthquake tomography to image the seismic velocity structure beneath Nabro volcano in Ethiopia. The findings suggest the presence of solidified rocks and a primary melt storage region that fed the 2011 eruption. The observations also indicate the persistence of magma and the potential for geothermal exploration.
JOURNAL OF GEOPHYSICAL RESEARCH-SOLID EARTH
(2023)
Article
Geochemistry & Geophysics
Henrik H. Svensen, Morgan T. Jones, Lawrence M. E. Percival, Stephen E. Grasby, Tamsin A. Mather
Summary: This study investigates the behavior of mercury (Hg) during contact metamorphism of shales and finds significant loss of sedimentary Hg due to gaseous emissions. The research also estimates the Hg mobilization from the aureoles and the flux of Hg emission during sill emplacement, suggesting a significant perturbation of the global Hg cycle. These findings provide important information for understanding the relationship between large igneous province activity and global environmental change.
EARTH AND PLANETARY SCIENCE LETTERS
(2023)
Letter
Multidisciplinary Sciences
Frederick Reinig, Lukas Wacker, Olaf Joeris, Clive Oppenheimer, Giulia Guidobaldi, Daniel Nievergelt, Florian Adolphi, Paolo Cherubini, Stefan Engels, Jan Esper, Frank Keppler, Alexander Land, Christine Lane, Hardy Pfanz, Sabine Remmele, Michael Sigl, Adam Sookdeo, Ulf Buentgen
Article
Geosciences, Multidisciplinary
Sung-Hyo Yun, Jeonghyun Lee, Cheolwoo Chang, Clive Oppenheimer
Summary: This study re-evaluates the historical records of Mt. Baekdu's activity based on volcanic phenomena. The volcanic phenomena were categorized into five types: rumbling, atmospheric abnormality, ash rain, ash cloud and phenomenon sightings. The study identified volcanic implications from historical records in Chinese. Analysis revealed that ash rain had the most abundant records, with Goryeosa documenting the phenomenon 56 times. Over 90 volcanic eruptions were discovered during the Millennium Eruption, predominantly Plinian or Vulcanian eruptions that dispersed volcanic ash. Based on historical eruptions and volcanic unrest, Mt. Baekdu is considered an active volcano with eruption potential, highlighting the importance of analyzing the volcano's historical eruption records to mitigate hazards.
GEOSCIENCE LETTERS
(2023)