A5025990150- Seismic Waves and Analysis
- Earthquake Detection and Analysis
- Particle Dynamics in Fluid Flows
- Seismology and Earthquake Studies
- Fluid Dynamics and Turbulent Flows
- Lightning and Electromagnetic Phenomena
- Combustion and Detonation Processes
- Geological and Geochemical Analysis
- Aeolian processes and effects
- Meteorological Phenomena and Simulations
- Archaeological Research and Protection
- Environmental and biological studies
- Pickering emulsions and particle stabilization
- Planetary Science and Exploration
- Fluid Dynamics and Heat Transfer
- Microencapsulation and Drying Processes
- Methane Hydrates and Related Phenomena
- Geology and Paleoclimatology Research
- Fire dynamics and safety research
- Landslides and related hazards
- Underwater Acoustics Research
- Infrared Target Detection Methodologies
- earthquake and tectonic studies
- Cryospheric studies and observations
- High-pressure geophysics and materials
Ludwig-Maximilians-Universität München
2020-2023
In July and August 2019, two paroxysmal eruptions dramatically changed the morphology of crater terrace that hosts active vents Stromboli volcano (Italy). Here, we document these morphological changes, by using 2259 UAS-derived photographs from eight surveys Structure-from-Motion (SfM) photogrammetric techniques, resulting in 3D point clouds, orthomosaics, digital surface models (DSMs) with resolution ranging 8.1 to 12.4 cm/pixel. We focus on evolution volcanic features volume changes upper...
Phenocrysts in volcanic rocks are recorders of magmatic processes that have occurred at depth before and during a eruption. Our petrological investigations stratigraphically controlled tephrite phonotephrite samples from the latest eruption Fogo (Cape Verde Islands) aimed to reconstructing magma storage transport. The dates sample emplacement been determined using satellite instrument - derived high resolution thermal infrared maps. All strongly phyric commonly contain complexly zoned...
Active volcanoes are typically subject to frequent substantial topographic changes as well variable eruption intensity, style and/or directionality. Gravitational instabilities and local accumulation of pyroclasts affect conditions at the active vents, through which gas-particle jets released. In turn, vent geometry strongly impacts characteristics. Here, we compare five high-resolution data sets (<4 cm/pixel) volcanic craters vents from Stromboli volcano, Italy, that were acquired by...
In Argentina, some people add peanuts to their beer. Once immersed, the initially sink part way down into beer before bubbles nucleate and grow on peanut surfaces remain attached. The move up within glass in many repeating cycles. this work, we propose a physical description of dancing spectacle. We break problem component phenomena, providing empirical constraint each: (i) heterogeneous bubble nucleation occurs is energetically preferential surfaces; (ii) enshrouded attached are positively...
Many explosive volcanic eruptions produce underexpanded starting gas-particle jets. The dynamics of the accompanying pyroclast ejection can be affected by several parameters, including magma texture, gas overpressure, erupted volume and geometry. With respect to latter, craters vents are often highly asymmetrical. Here, we experimentally evaluate effect vent asymmetry on expansion behaviour jet directly above vent. geometries chosen for this study based field observations. novel element...
Abstract Volcanic lightning is commonly observed in explosive volcanic eruptions of Explosivity Index (VEI) > 2 and can be detected remotely providing real-time volcano monitoring information. However, little known about the electrical activity accompanying lower-magnitude spectrum eruptions, often involving mafic magmas. We narrow this gap knowledge by presenting signature (VEI ≤ 1) Stromboli (Italy) recorded an electrostatic thunderstorm detector. The persistent eruptive mild...
Explosive volcanic eruptions eject a gas-particle mixture into the atmosphere. The characteristics of this in near-vent region are direct consequence underlying initial conditions at fragmentation and geometry shallow plumbing system. Yet, it is not possible to observe directly sub-surface parameters that drive such eruptions. Here, we use scaled shock-tube experiments mimicking explosions order elucidate effects number conditions. As vents can be expected possess an irregular geometry,...
Observations and measurements on active volcanoes are commonly conducted at a distance considered safe from the inherent dangers linked to volcanic explosions. This reduction in proximity adds degree of uncertainty interpretation monitoring data due enhanced signal path effects. Here, we describe custom-built, drone-deployable sensor platforms designed acquire high vents. They equipped with an environmental capable measuring temperature, relative humidity barometric pressure, microphone (6...
Abstract Infrasound (low frequency sound waves) can be used to monitor and characterize volcanic eruptions. However, infrasound sensors are usually placed on the ground, thus providing a limited sampling of acoustic radiation pattern that bias source size estimates. We present observations explosive eruptions from novel uncrewed aircraft system (UAS)‐based sensor platform was strategically hovered near active vents Stromboli volcano, Italy. captured eruption short‐duration explosions jetting...
&lt;p&gt;After 50 years of volcanic quiescence, on 19 September 2021, an eruption started the western flank Cumbre Vieja ridge La Palma, Canary Islands, Spain. The was characterised by simultaneous effusive and explosive activity from a several hundred-meter-long fissure, which later built up cone showed variable eruptive behaviour at different vents, suggesting spatially complex plumbing system. Explosive ranged mild ash emissions, Strombolian explosions to fire fountaining...
&lt;p&gt;Volcanic lightning is a common phenomenon observed during explosive eruptions of high magnitude and intensity. Lightning observations in milder eruptions, generally basaltic composition, are less frequent, arising the question whether electrification may be feature over whole spectrum styles magma compositions.&lt;/p&gt;&lt;p&gt;The 2021 eruption Cumbre Vieja on island La Palma (Canary Islands, Spain) started 19 September 2021, continuously producing lava...