Results 51 to 60 of about 498 (196)
Use of Pele’s tears and spheres as an indicator of lava fountain height in Hawaiian volcanoes
Frontiers in Earth ScienceLava flows have presented the greatest hazard to human property during the most recent eruptions of Hawaiian volcanoes, and lava fountains are a source of these lava flows.
Scott Moyer, Dork Sahagian
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Mechanisms of Ash Generation at Basaltic Volcanoes: The Case of Mount Etna, Italy
Frontiers in Earth Science, 2019 Basaltic volcanism is the most widespread volcanic activity on Earth and planetary bodies. On Earth, eruptions can impact global and regional climate, and threaten populations living in their shadow, through a combination of ash, gas and lava.
Margherita Polacci +4 more
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Separating the thermal fingerprints of lava flows and simultaneous lava fountaining using ground‐based thermal camera and SEVIRI measurements [PDF]
Geophysical Research Letters, 2013 AbstractDuring effusive eruptions, thermal satellite monitoring has proved well suited to map the thermal flux from lava flows. However, during lava fountaining events, thermal contributions from active flows and from the fountain itself cannot be separated in low resolution satellite data. Here using photogrammetry and atmospheric modeling techniques,
Ganci, Gaetana +3 more
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Plume Height Time-Series Retrieval Using Shadow in Single Spatial Resolution Satellite Images
Remote Sensing, 2020 Volcanic plume height is a key parameter in retrieving plume ascent and dispersal dynamics, as well as eruption intensity; all of which are crucial for assessing hazards to aircraft operations.
Sophie Pailot-Bonnétat +4 more
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The making of pure quartzose sand in continental interiors: Paraná River (Brazil and Argentina)
Sedimentology, EarlyView.ABSTRACT As part of a comprehensive project on sedimentary processes in South America, this study focuses on sediment generation in the intracratonic Paraná Basin and monitors the evolution of sand composition along the Paraná River from central Brazil to the Río de la Plata estuary in Argentina.
Eduardo Garzanti +5 more
wiley +1 more source
Geohazards in the Western Ionian Sea: Insights from Non-Earthquake Signals Recorded by the NEMO-SN1 Seafloor Observatory [PDF]
Oceanography, 2014 Seafloor instability resulting from both tectonics and volcanism affects the Western Ionian Sea. The NEutrino Mediterranean Observatory-Submarine Network 1 (NEMO-SN1), deployed 25 km offshore eastern Sicily at 2,100 m water depth, records a variety of ...
Tiziana Sgroi +5 more
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Frontiers in Earth Science, 2018 In active volcanoes a main challenge is to identify and characterize the dynamics of magmatic sources from deformation and strain data. This task is of primary importance in frequently eruptive volcanoes, such as Etna.
Marco Aloisi +3 more
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Remote Sensing, 2022 Improving the capability to detect volcanic explosive activity could be strategic for the task of a volcano observatory to inform civil protection authorities and air traffic controllers.
Giuseppe Giammello +2 more
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New data from borehole strainmeters to infer lava fountain sources (Etna 2011–2012) [PDF]
Geophysical Research Letters, 2013 AbstractIn January 2011, eruptive activity resumed at Etna producing a new phase with frequent lava fountain episodes until April 2012. In November 2011, the first two borehole strainmeters were installed, which detected negative strain changes (~0.15–0.8 μstrain) during the paroxysmal events.
A. Bonaccorso +3 more
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Geophysical Research Letters, 2019 On 24 December 2018, a violent eruption started at Mount Etna from a fissure on the southeastern flank. The intrusive phenomenon, accompanied by intense Strombolian and lava fountain activity, an ash‐rich plume, and lava flows, was marked by significant ...
F. Cannavo' +3 more
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