Results 41 to 50 of about 909,118 (306)

Maximum warning times for imminent volcanic eruptions [PDF]

, 2005
Accelerations in seismicity are important precursors to eruptions at volcanoes reawakening after extended repose intervals. These have previously been quantified for subduction-zone settings in terms of the linkage of crustal faults by shearing ...
Kilburn, CRJ, Sammonds, PR
core   +1 more source

Evaluating the assimilation of S5P/TROPOMI near real-time SO2 columns and layer height data into the CAMS integrated forecasting system (CY47R1), based on a case study of the 2019 Raikoke eruption

Geoscientific Model Development, 2022
. The Copernicus Atmosphere Monitoring Service (CAMS), operated by the European Centre for Medium-Range Weather Forecasts on behalf of the European Commission, provides daily analyses and 5 d forecasts of atmospheric composition, including forecasts of ...
A. Inness, M. Ades, D. Balis, Dmitry S. Efremenko, J. Flemming, P. Hedelt, M. Koukouli, D. Loyola, Roberto Ribas   +8 more
semanticscholar   +1 more source

Repeating Earthquakes During Multiple Phases of Unrest and Eruption at Mount Agung, Bali, Indonesia, 2017

Frontiers in Earth Science, 2021
In 2017, Mount Agung produced a small (VEI 2) eruption that was preceded by an energetic volcano-tectonic (VT) swarm (>800 earthquakes per day up to M4.9) and two months of declining activity.
John J. Wellik, Stephanie G. Prejean, Devy K. Syahbana   +2 more
doaj   +1 more source

Keeping watch over Colombia’s slumbering volcanoes [PDF]

, 2015
The Volcanological and Seismological Observatories of Manizales, Pasto and Popayan (Colombian Geological Survey) monitor and study the active volcanoes of Colombia using seismological, geodetic, geochemical and other techniques.
BATTAGLIA, MAURIZIO, C. López, D. Arcos, J. Alpala, L. Narváez, Ordoñez, M.   +5 more
core   +1 more source

Mathematical modeling of the spread of the coronavirus under strict social restrictions

Mathematical Methods in the Applied Sciences, EarlyView., 2021
We formulate a simple susceptible‐infectious‐recovery (SIR) model to describe the spread of the coronavirus under strict social restrictions. The transmission rate in this model is exponentially decreasing with time. We find a formula for basic reproduction function and estimate the maximum number of daily infected individuals.
Mo'tassem Al‐arydah, Hailay Berhe, Khalid Dib, Kalyanasundaram Madhu   +3 more
wiley   +1 more source

Forecasting volcano eruption activity

, 2022
Volcanic activity monitoring typically are based on gas emissions, seismic activity, thermal anomalies, deformation and surface change. These events can be extracted by globally tracked observation data that span the electromagnetic spectrum. Orbital earth observation is generated by sensors focusing on different wavelength.
openaire   +1 more source

Mount St. Helens Retrospective: Lessons Learned Since 1980 and Remaining Challenges

Frontiers in Earth Science, 2018
Since awakening from a 123-year repose in 1980, Mount St. Helens has provided an opportunity to study changes in crustal magma storage at an active arc volcano—a process of fundamental importance to eruption forecasting and hazards mitigation.
Daniel Dzurisin
doaj   +1 more source

δD and δ18O variations of the magmatic system beneath Deception Island volcano (Antarctica): Implications for magma ascent and eruption forecasting

, 2020
Geochemistry of volatiles in active volcanoes provides insights into the magmatic processes and evolution at depth, such as magma evolution and degassing, which can be implemented into volcanic hazards assessment.
A. Álvarez-Valero, G. Gisbert, M. Aulinas, A. Geyer, G. Kereszturi, A. Polo-Sánchez, E. Núñez-Guerrero, H. Sumino, J. Borrajo   +8 more
semanticscholar   +1 more source

Probabilistic enhancement of the Failure Forecast Method using a stochastic differential equation and application to volcanic eruption forecasts

, 2018
We introduce a doubly stochastic method for performing material failure theory based forecasts of volcanic eruptions. The method enhances the well known Failure Forecast Method equation, introducing a new formulation similar to the Hull-White model in ...
Bevilacqua, Andrea, Bursik, Marcus, Neri, Augusto, Patra, Abani, Pitman, E. Bruce, Voight, Barry   +5 more
core   +1 more source

Synthesis of 3-D coronal-solar wind energetic particle acceleration modules [PDF]

, 2014
1. Introduction Acute space radiation hazards pose one of the most serious risks to future human and robotic exploration. Large solar energetic particle (SEP) events are dangerous to astronauts and equipment.
Chandran, Benjamin D.G., Cooper, J. F., Desai, M., Downs, Cooper, Germaschewski, Kai K., Giacalone, Joe, Gorby, Matthew J., Isenberg, Philip A., Kasper, J. C., Korreck, K. E., Kozarev, K., Lee, Martin A., Linker, J. A., Lionello, Roberto, Lugaz, Noe E., MacNeice, Peter, Mikic, Z., Riley, P., Schwadron, Nathan A., Smith, Sonya S., Spence, Harlan E., Stevens, M. L., Torak, Tibor   +22 more
core   +2 more sources