A5039236029- earthquake and tectonic studies
- Geological and Geochemical Analysis
- Geochemistry and Geologic Mapping
- Seismology and Earthquake Studies
- Geology and Paleoclimatology Research
- Landslides and related hazards
- Climate variability and models
- High-pressure geophysics and materials
- Geological and Tectonic Studies in Latin America
- Meteorological Phenomena and Simulations
- Reservoir Engineering and Simulation Methods
- Geological formations and processes
- Wind and Air Flow Studies
- Marine and environmental studies
- Computational Physics and Python Applications
- Flood Risk Assessment and Management
- Cryospheric studies and observations
- Aeolian processes and effects
University of South Florida
2019-2023
University of the West Indies
2016-2023
Université Libre de Bruxelles
2023
University of Bristol
2023
University of South Florida St. Petersburg
2020
Babeș-Bolyai University
2014
University of Auckland
2009
Abstract Cordilleran arcs are built by long periods of steady-state magmatism punctuated transient high-flux magmatic episodes or flare-ups. Such flare-ups, manifested as prodigious silicic volcanism and magmatism, result from geodynamic perturbations that cause elevated rates magma addition to the crust. Questions remain, however, about how quantitatively compare between flare-up modes arc after major perturbation begins. Here, we compute new estimates erupted volumes over last 35 Myr for...
Abstract Uncertainty quantification (UQ) in eruption source parameters, like tephra volume, plume height, and umbrella cloud radius, is a challenge for volcano scientists because deposits are often sparsely sampled due to burial, erosion, related factors. We find that UQ improved by coupling an advection‐diffusion model with two Bayesian inversion approaches: (a) robust but computationally expensive Generalized Likelihood Estimation algorithm, (b) more approximate inexpensive parameter...
Abstract Eruption source parameters (in particular erupted volume and column height) are used by volcanologists to inform volcanic hazard assessments classify explosive eruptions. Estimations of associated with large uncertainties due various factors, including complex tephra sedimentation patterns from gravitationally spreading umbrella clouds. We modify an advection-diffusion model investigate this effect. Using model, for the climactic phase 2450 BP eruption Pululagua, Ecuador, different...
Abstract This paper forensically reconstructs the timings, impacts and processes that drove sequence of explosive eruptions La Soufrière, St Vincent in April 2021 using a combination field-based stratigraphy textural dissection deposit character together with contemporary visual observations. Explosive activity on 9 early 10 involved destruction almost all 2020/2021 lava dome, c. 60% 1979 dome formation 600 m diameter crater by 2pm UTC April. Following initial explosion, plumes rose to...
Pyroclastic currents (PCs) are the most challenging volcanic hazards for disaster planners in populated areas around volcanoes. 'El Misti' volcano (5,825 masl.), located only 17 km from city center of Arequipa (> 1.1 million inhabitants), South Peru, has produced small-to-moderate volume (< 1 km3) PCs with a frequency 2,000 to 4,000 years over past c. 50 kyr. The recent Plinian eruption dated at c.2070 yr BP (VEI 4) been selected as one reference events hazard assessment and risk mitigation...
Abstract Of the 48 volcanoes in Mexico listed as potentially active by National Center for Disaster Prevention (CENAPRED), Ceboruco, located western Trans-Mexican Volcanic Belt, is considered among 5 most hazardous. Its recent eruptive history includes a large magnitude Plinian (VEI 6) eruption ~ 1000 years ago and historical 1870–1875 vulcanian 3) eruption, well fumarolic seismic activity. Ceboruco relatively young (< 400,000 years) stratovolcano characterized abrupt changes behavior....
Abstract We report on the first “real‐time” application of BET_UNREST (Bayesian Event Tree for Volcanic Unrest) probabilistic model, during a VUELCO Simulation Exercise carried out island Dominica, Lesser Antilles, in May 2015. Dominica has concentration nine potentially active volcanic centers and frequent earthquake swarms at shallow depths, intense geothermal activity, recent phreatic explosions (1997) indicate region is still active. The exercise scenario was developed secret by team...
Evaluation of volcanic hazards typically focusses on single eruptive centres or spatially restricted areas, such as fields. Expanding hazard assessments across wide regions (e.g., large sections a continental margin) has rarely been attempted, due to the complexity integrating temporal and spatial variability in tectonic magmatic processes. In this study, we investigate new approaches quantify long-term active complex settings, using example 22.5–28°S segment Central Volcanic Zone Andes....
Abstract A probabilistic volcanic hazard assessment (PVHA) for Ceboruco volcano (Mexico) is reported using PyBetVH, an e-tool based on the Bayesian Event Tree (BET) methodology. Like many volcanoes, under-monitored. Despite several eruptions in late Holocene and efforts by university government groups to create sustain a monitoring network, this active monitored intermittently rather than continuously dedicated groups. With no consistent data available, we look at geology eruptive history...
Abstract Eruption source parameters (ESPs) used to characterize explosive eruptions are estimated from tephra deposit data using different models (statistical or numerical) and inversion approaches. The ESPs thus derived subject substantial uncertainties when the bulk of deposit, including information about its full spatial extent variation in grain-size distribution is missing due geographical environmental conditions. We use an advection–diffusion model coupled with a Bayesian uncertainty...
Abstract We conduct a probabilistic volcanic hazard assessment for Ceboruco volcano (Mexico) using PyBetVH, an e-tool based on the Bayesian event tree (BET) methodology. use available information about volcano, including eruptive history, numerical and theoretical models, to generate probability maps. Our accounts variability of eruption types expected at hazardous phenomena these eruptions generate. create generic account magmatic amagmatic activity. For eruption, we choose three scenarios:...
Earth and Space Science Open Archive posterOpen AccessYou are viewing the latest version by default [v1]An umbrella cloud model to explain thickness grain size variation in tephra deposits: Pululagua (Ecuador)AuthorsRobertConstantinescuSee all authors Robert ConstantinescuCorresponding Author• Submitting AuthorUniversity of South Florida, School Geosciencesview email addressThe was not providedcopy address
Earth and Space Science Open Archive PosterOpen AccessYou are viewing the latest version by default [v1]A preliminary probabilistic multi-hazard assessment for Ceboruco volcano (Mexico)AuthorsRobertConstantinescuKarimeGonzalez ZuccolottoDolorsFerres LópeziDKatrinSieroniDLuciaCapraClausSiebeiDRobertoToniniiDSee all authors Robert ConstantinescuCorresponding Author• Submitting AuthorUniversity of South FLoridaview email addressThe was not providedcopy addressKarime Gonzalez ZuccolottoCentro de...
A Correction to this paper has been published: https://doi.org/10.1038/s43247-021-00096-9.