A5023343175- Geological and Geochemical Analysis
- Groundwater and Isotope Geochemistry
- Atmospheric and Environmental Gas Dynamics
- earthquake and tectonic studies
- Methane Hydrates and Related Phenomena
- Geochemistry and Geologic Mapping
- Geology and Paleoclimatology Research
- CO2 Sequestration and Geologic Interactions
- Hydrocarbon exploration and reservoir analysis
- Atmospheric Ozone and Climate
- Atmospheric chemistry and aerosols
- Geological and Tectonic Studies in Latin America
- Seismology and Earthquake Studies
- Earthquake Detection and Analysis
- Radioactivity and Radon Measurements
- Geological and Geophysical Studies Worldwide
- Geological and Geophysical Studies
- Geothermal Energy Systems and Applications
- Isotope Analysis in Ecology
- Seismic Waves and Analysis
- Geological Studies and Exploration
- Spectroscopy and Laser Applications
- Air Quality Monitoring and Forecasting
- High-pressure geophysics and materials
- Marine and coastal ecosystems
Istituto Nazionale di Geofisica e Vulcanologia
2015-2024
Wesleyan University
2017
Universidad Nacional Autónoma de México
2002-2015
INGV Sezione di Palermo
2006
University of Palermo
2004
Bromine monoxide (BrO) and sulphur dioxide (SO 2 ) abundances as a function of the distance from source were measured by ground‐based scattered light Multiaxis Differential Optical Absorption Spectroscopy (MAX‐DOAS) in volcanic plumes Mt. Etna on Sicily, Italy, August–October 2004 May 2005 Villarica Chile November 2004. BrO SO spatial distributions cross section Etna's plume also determined Imaging DOAS. We observed an increase BrO/SO ratio below detection limit near vent to about 4.5 × 10...
Constraining fluxes of volcanic bromine and iodine to the atmosphere is important given significant role these species play in ozone depletion. However, very few such measurements have been made hitherto, that global are poorly constrained. Here we extend data set Br I degassing by reporting first emissions from Mount Etna. These were obtained using filter packs contemporaneous ultraviolet spectroscopic SO 2 flux measurements, resulting time‐averaged emission rates 0.7 kt yr −1 0.01 for I,...
Marked increases of CO 2 , H and He dissolved in thermal waters changes the carbon isotopic composition, were observed at Stromboli before 28 December 2002 eruption a violent explosive paroxysm occurred on 5 April 2003. High anomalous flux values recorded crater rim since week onset. The first anomalies (dissolved amount) appeared some months eruption, when magma column rose very high level conduit. peaks few days paroxysm. Carbon composition indicates magmatic origin whose increase,...
Total CO 2 output from fumaroles, soil gas, bubbling gas discharges and water dissolved gases discharged the island, was estimated for Vulcano Italy. The emission fumaroles La Fossa summit crater SO output, while through diffuse quantified on basis of 730 measurements fluxes performed by using accumulation chamber method. results indicate an overall ≅500 t day −1 island. main contribution to total comes area cone (453 ), with 362 91 degassing. release peripheral areas is ≅20 degassing...
Abstract. Volcanic plumes are common and far-reaching manifestations of volcanic activity during between eruptions. Observations the rate emission composition essential to recognize and, in some cases, predict state activity. Measurements size location important assess impact from sporadic or localized events persistent widespread processes climatic environmental importance. These observations provide information on volatile budgets Earth, chemical evolution magmas, atmospheric circulation...
On Vulcano Island (Italy), many geochemical crises have occurred during the last 130 years of solfataric activity. The main in 1978–1980, 1988–1991, 1996, 2004–2007, 2009–2010 and ongoing 2021 anomalous degassing These been characterized by early signals resuming activity, measurable increase volatiles energy output emitted from summit areas active cone, particularly increases gas/water ratios fumarolic area at summit. In any case, a direct rather than linear correspondence has observed...
A crucial feature to manage a volcanic crisis is the ability of volcanologists promptly detect an impending eruption. This often affected by significant uncertainty, mainly for difficulty in interpreting monitoring signals terms exact timing possible Here we contribute this problem, focusing on states active volcanoes with closed conduit, as deduced from data. Four main can be identified. In quiescence state 1) data lie baseline, suggesting lack shallow magma/fluid movement. The unrest...
ABSTRACT The hydrothermal system at Vulcano, Aeolian Islands (Italy), is home to a wide variety of thermophilic, chemolithoautotrophic archaea and bacteria. As observed in laboratory growth studies, these organisms may use an array terminal electron acceptors (TEAs), including O 2 , Fe(III), elemental sulphur CO ; donors include H Fe 2+ S CH 4 . Concentrations inorganic aqueous species gases were measured 10 fluids from seeps, wells vents on Vulcano. These data combined with standard Gibbs...
Abstract Socorro Island is the exposed part of an approx. 4000‐m‐high volcanic edifice rising from oceanic floor to 1000 m asl at northern Mathematician Ridge, Eastern Pacific. The volcano active, with most recent basaltic eruption in 1993. Moderate fumarolic activity and diffuse degassing a total CO 2 flux 20 day −1 are concentrated summit region composed group rhyolite domes. Low‐temperature, boiling point, fumaroles discharge gas high H (up mol% dry gas) CH 4 mol%). Both carbon He...
Abstract A new eruption started at Stromboli on 6 August 2014, which had been preceded by 2 months of increased Strombolian activity and several lava overflows from the craters. The was characterized a effusion in Sciara del Fuoco fracture 650 m above sea level that lasted until 13–17 November. Here we present first geochemical observations this eruption, based soil CO flux summit area 3 He/ 4 He ratios thermal waters near village. We infer triggered gradual replenishment feeding system ‐...
Sulphur speciation in volcanic gases acts as a major redox buffer, and H 2 S/SO ratios represent valuable indicator of magmatic conditions interactions between hydrothermal fluids. However, measurement even by direct sampling techniques, is not straightforward. We7 report here on application small ultraviolet spectrometer for real‐time field S SO concentrations, using open‐path extractive configurations. The device was tested at fumaroles Solfatara Vulcano, Italy, November 2002....