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Linking magma dynamics and a forward gravity model to field data at the Three Sisters, Oregon Cascades
EVOLUTION OF TRANSCRUSTAL MAGMA PLUMBING SYSTEMS AND VOLCANIC ERUPTION STYLES: CHEMICAL, TEMPORAL, AND PHYSICAL PERSPECTIVES II ORAL
volcanology, geochemistry and petrology | 12 december 2024
Annika E. Dechert, Gabriel L. L. Eggers, Josef Duf...
The Three Sisters volcanic complex (South Sister, Middle Sister, North Sister) in the central Oregon Cascades is considered a high threat volcano with...
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Taking the Pulse of Unsteady Eruption Plumes Using a Multimethod Approach
WHAT GOES UP MUST (EVENTUALLY) COME DOWN: DYNAMICS OF AND DEPOSITION FROM VOLCANIC ERUPTION COLUMNS, PLUMES, AND PYROCLASTIC DENSITY CURRENTS II POSTER
volcanology, geochemistry and petrology | 11 december 2024
Johan T. Gilchrist, Franck Donnadieu, Mark Jelline...
Explosive eruptions inject multiphase mixtures of hot ash, pumice, rocks, and gases into the atmosphere to form eruption columns in gravitationally st...
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The transition from melt accumulation to eruption triggering recorded by orthopyroxene Fe-Mg diffusion timescales in late Holocene rhyolites, South Sister volcano, Oregon Cascades
TIMING AND DURATION OF MAGMATIC PROCESSES FROM MELT GENERATION TO ERUPTION I POSTER
volcanology, geochemistry and petrology | 11 december 2024
Nathan L. Andersen, Annika E. Dechert, Dawn C. Rut...
During the last 50ka, South Sister volcano, Oregon Cascades, USA, repeatedly erupted rhyolite. Most recently, the late-Holocene (ca. 2 ka) Rock Mesa (...
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Quantifying InSAR Coherence Degradation at Mt. St. Helens due to Snow Cover using a Computationally Inexpensive Neural Network
FUSION AND APPLICATION OF AI/ML WITH REMOTE SENSING, SOCIAL SENSING, AND/OR PHYSICAL PROCESS MODELING TO STUDY HAZARD I ELIGHTNING
natural hazards | 11 december 2024
Rebecca Bussard, Josef Dufek, Christelle Wauthier,...
A useful tool for monitoring volcanic systems is Interferometric Synthetic Aperture Radar (InSAR), which measures ground movement over a period of tim...
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How Pore Pressure Feedback Shapes Pyroclastic Density Currents and Their Impacts.
WHAT GOES UP MUST (EVENTUALLY) COME DOWN: DYNAMICS OF AND DEPOSITION FROM VOLCANIC ERUPTION COLUMNS, PLUMES, AND PYROCLASTIC DENSITY CURRENTS I ORAL
volcanology, geochemistry and petrology | 10 december 2024
Eric Breard, Josef Dufek
Pyroclastic Density Currents (PDCs) are high-energy, hot multiphase flows that pose significant risks in volcanic regions. At the base of PDCs, the co...
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Granular and Fluid Instabilities in Explosive Volcanic Eruptions: Using High Resolution Numerical Simulations to Explore Physics and Act as a Digital Twin to Improve Rapid Calculations and Sensor Networks
WHAT GOES UP MUST (EVENTUALLY) COME DOWN: DYNAMICS OF AND DEPOSITION FROM VOLCANIC ERUPTION COLUMNS, PLUMES, AND PYROCLASTIC DENSITY CURRENTS I ORAL
volcanology, geochemistry and petrology | 10 december 2024
Josef Dufek, Eric Breard
Explosive volcanic eruptions produce high energy flows that encompass a range of particle-fluid interactions. While hazards and impacts from these eve...
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Basal Force Fluctuations and Granular Rheology: Linking Macroscopic Descriptions of Granular Flows to Bed Forces With Implications for Monitoring Signals
GRANULAR AND FLUID PHYSICS IN EARTH SURFACE PROCESSES: BRIDGING GRAIN-SCALE MECHANICS AND CONTINUUM MODELING II ORAL
earth and planetary surface processes | 10 december 2024
PJ H. Zrelak, Eric Breard, Josef Dufek
Granular flows are ubiquitous in nature with single flows traversing a wide range of dynamic conditions from initiation to deposition. Many of these f...
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Recent Advances in Modeling of Electrical Discharges in Planetary Atmospheres
TOPICS IN ATMOSPHERIC ELECTRICITY, INCLUDING THUNDERSTORM EFFECTS IN THE NEAR-EARTH SPACE ENVIRONMENT AND COUPLING TO OTHER PLANETARY PROCESSES II ORAL
atmospheric and space electricity | 09 december 2024
Jeremy Riousset, Annelisa Esparza, Joshua Mendez H...
Our work focuses on plasma discharges produced in various planetary atmospheres. This process can create luminescent emissions at low currents and low...
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