A5043374906- Geophysics and Gravity Measurements
- earthquake and tectonic studies
- Seismic Waves and Analysis
- Geomagnetism and Paleomagnetism Studies
- Geophysical and Geoelectrical Methods
- Geological and Geochemical Analysis
- GNSS positioning and interference
- Particle Detector Development and Performance
- Earthquake Detection and Analysis
- Seismology and Earthquake Studies
- Computational Physics and Python Applications
- Astrophysics and Cosmic Phenomena
- Planetary Science and Exploration
- Landslides and related hazards
- Geophysics and Sensor Technology
- Cryospheric studies and observations
- Pulsars and Gravitational Waves Research
- Inertial Sensor and Navigation
- Geological and Geophysical Studies
- High-pressure geophysics and materials
- Advanced Fiber Optic Sensors
- Geology and Paleoclimatology Research
- Methane Hydrates and Related Phenomena
- Particle physics theoretical and experimental studies
- Geological Modeling and Analysis
Istituto Nazionale di Geofisica e Vulcanologia
2015-2024
INGV Osservatorio Etneo
2013-2024
Osservatorio Astrofisico di Catania
2017-2024
Ministry of Defence
2024
Radiotelevisione Italiana (Italy)
2022
CTO Hospital
2019
United States Geological Survey
2008
University of Bristol
2008
Simon Fraser University
2008
The Open University
2008
We study the possibility of muon radiography as a tool to investigate space and time changes in internal density distribution inside geological structures. Previous work has shown practical applicability this method. Nevertheless, quantitative information on factors which impose limitations it are still sorely lacking literature. discuss main issues that can influence final result geophysical imaging experiment. In particular, with view optimizing signal-to-noise ratio, we address concerning...
Abstract We present the world's first time series acquired in summit area of an active volcano with absolute atom interferometry gravimeter. The device was installed ∼2.5 km from craters Mt. Etna and produced a continuous high–quality gravity series, despite unfavorable environmental conditions at installation site occurrence phases high volcanic tremor during acquisition interval. Comparison data superconducting gravimeters elsewhere on highlights correlated anomalies, demonstrating that...
Time-dependent gravimetric measurements can detect subsurface processes long before magma flow leads to earthquakes or other eruption precursors. The ability of gravity mass is greatly enhanced if are analyzed and modeled with ground-deformation data. Obtaining the maximum information from microgravity studies requires careful evaluation layout network benchmarks, environmental signal, coupling between changes crustal deformation. When in system under study fast (hours weeks), as...
Interactions of conduit geometry with gas–liquid flows control volcanic activity, implying that the evaluation hazards requires quantitative understanding inner structure volcano. The more established geophysical imaging techniques suffer from inherent ambiguity, may require spatially dense measurements in active areas and not provide sufficient spatial resolution uppermost part system. It is thus desirable to develop new allowing a better volcano's upper feeding system, reduced ambiguity...
Abstract Analysis of microgravity and surface displacement data collected at the summit Kīlauea Volcano, Hawaii (USA), between December 2009 November 2012 suggests a net mass accumulation ~1.5 km depth beneath northeast margin Halema‘uma‘u Crater, within Caldera. Although residual gravity increases decreases are accompanied by periods uplift subsidence surface, respectively, volume change inferred from modeling interferometric synthetic aperture radar deformation can account for only small...
Repeated and continuous gravity measurements have long been performed to monitor active volcanoes study the processes that may lead unrest eruptions. Possible instrumental effects must be accurately accounted for, since they can behind apparent changes even stronger than real (i.e., volcano-related) ones.At tall volcanoes, where, due rough topography, difference between field values at external summit stations hundreds of mGal, strong time in arise from calibration factor device used perform...
Muon tomography measures the flux of cosmic muons crossing geological bodies to determine their density. The telescopes used perform measurements are exposed noise fluxes with high intensities relative tiny interest. We give experimental evidences a so far never described source caused by upward going particles. Data acquired on La Soufrière Guadeloupe and Mount Etna reveal that particles detected only when rear side telescope is wide volume atmosphere located below altitude rock obstruction...
Abstract Continuous gravity data collected near the summit eruptive vent at Kīlauea Volcano, Hawaiʻi, during 2011–2015 show a strong correlation with summit‐area surface deformation and level of lava lake within over periods days to weeks, suggesting that changes in reflect variations volcanic activity. Joint analysis time series indicates entire period studied, average density upper tens hundreds meters remained low—approximately 1000–1500 kg/m 3 . The ratio change (adjusted for Earth tides...
Knowledge of the spatio-temporal changes in characteristics and distribution subsurface fluids is key to properly addressing important societal issues, including: sustainable management energy resources (e.g., hydrocarbons geothermal energy), water resources, assessment hazard volcanic eruptions). Gravimetry highly attractive because it can detect mass, thus providing a window into processes that involve deep fluids. However, high cost operating features associated with current...
In October 2002 a new eruption began at Etna. Lava flows were issued from two different fissure systems on the NE and S flanks of volcano. A continuous microgravity sequence, acquired station N slope (2800 m a.s.l.), shows marked decrease (about 400 μGal in less than one hour) about 4 hours before lava was first emitted eruptive fissures along NE‐Rift. This anomaly reversed soon afterward high rate. The strong gravity is interpreted as opening, by external forces, shallow fracture system 1...
Four-dimensional or time-lapse microgravity monitoring has been used effectively on volcanoes for decades to characterize the changes in subsurface volcanic systems. With measurements typically lasting from a few days weeks and then repeated year later, spatial resolution of theses studies is often at expense temporal vice versa. Continuous gravity with one two instruments operating short period time (weeks months) have shown enticing evidence very rapid plumbing system (minutes hours) case...
Abstract We focus on a sequence of 9 lava fountains from Etna that occurred in 2011, separated by intervals 5 to 10 days. Continuous measurements allowed discover the occurrence gravity decreases before onset most fountaining episodes. propose changes are due pre-fountaining accumulation foam layer at shallow levels plumbing system volcano. Relying relationship between amount gas trapped and emitted during each episode, we develop conceptual model mechanism controlling passage Strombolian...
Abstract We present results from a mini‐array of three iGrav superconducting gravimeters (SGs) at Mount Etna. This is the first network SGs ever installed on an active volcano. Continuous gravity measurements volcanoes are mostly accomplished with spring that can be operated even under harsh field conditions. Nevertheless, these instruments do not provide reliable continuous over periods longer than few days due to instrumental drift and artifacts driven by ambient parameters. free effects...
SUMMARY Microgravity and GPS data collected at Mt Etna during a 1-yr time interval encompassing the 2002 NE-rift eruption are analysed. The common GPS-gravity profile traverses summit area of Etna, between craters (about 3000 m) northernmost tip eruptive fractures (2500 m). Displacements (up to 2 m in both horizontal vertical directions) gravity variations 350 μGal, after having removed effect elevation changes) observed this period among largest ever recorded Etna. changes have been...
Gravity changes are presented from a series of field microgravity surveys conducted at Mt Etna between August 1994 and November 1996, period including the 1995–1996 explosive summit activity. Data were collected along network 69 stations monthly to annual sampling rate, depending on each subarray network.
Research Article| September 01, 2012 Gravity fluctuations induced by magma convection at Kīlauea Volcano, Hawai'i Daniele Carbone; Carbone * 1Istituto Nazionale di Geofisica e Vulcanologia, Sezione Catania, Osservatorio Etneo, Catania 95125, Italy *E-mails: carbone@ct.ingv.it; mpoland@usgs.gov. Search for other works this author on: GSW Google Scholar Michael P. Poland 2U.S. Geological Survey, Hawaiian Volcano Observatory, PO Box 51, Hawaii National Park, 96718-0051, USA Author and Article...
Discrete gravity data were acquired at Mount Etna over a period lasting more than year and spanning the July–August 2001 flank eruption. The measurements made using Scintrex CG‐3M gravimeter along two profiles of Etna's network. indicate that during second half 2000, mass increase 2 × 10 kg took place about 1.5 km below summit craters zone. It is thought to be due magma accumulation. A comparable decrease was detected 4‐month encompassing eruption which result withdrawal same magma. also...
During the last few decades, joint investigations of microgravity and surface deformation measurements have played an increasingly important role in studying internal dynamics active volcanoes. Deformation observations been accomplished at Mt Etna since eighties. Past data sets collected during paroxysmal events can be utilized as case‐studies to both (1) test possibilities nowadays more powerful inversion tools improved analytical formulations model source‐mechanisms volcano‐related gravity...