Volcano Watch — Gases are what drives volcanoes' spectacular fountains
WEBOct 1, 1993 · In a double handful of molten magma (weighing about a pound), there is less than a tenth of an ounce, by weight, of dissolved gas - roughly the same weight as a pinch of table salt. Yet this tiny amount of gas can drive spectacular lava fountains hundreds of …
Volcano Watch — A closer look at lava fountains
WEBFeb 24, 2007 · The gases emitted from the lava fountains on Mount Etna clearly showed higher proportions of the deep-derived magmatic gases, carbon dioxide, and sulphur dioxide. The gas composition indicates that the gas phase formed, and reached equilibrium, at depths of around 1.5 km (1 mile) beneath the surface, before rapidly ascending to the surface in ...
Photo and Video Chronology —September 20, 2024, Paused …
WEB1 day ago · They reported minor spattering and small fountains at one end of the vent at 8:30 a.m. HST. By 10 a.m. HST, eruptive activity had paused but the eruptive vents continued to emit volcanic gas and steam. The eruption, which began on the night of September 15, occurred within a closed and remote …
Near-surface magma flow instability drives cyclic lava ... - Nature
WEBNov 7, 2023 · Lava fountains are a common manifestation of basaltic volcanism. While magma degassing plays a clear key role in their generation, the controls on their duration and intermittency are only...
Hawaii’s Kilauea Volcano Erupts with Dramatic Lava Fountains
WEBDec 22, 2020 · Hawaii's Kilauea volcano erupted beginning Sunday (Dec. 20) night local time, with dramatic lava fountains and huge puffs of gas and steam being launched from the summit crater called ...
Scientists unveil the secrets of Iceland's spectacular lava fountains
WEBNov 13, 2023 · This new understanding challenges traditional models of lava fountaining, which often emphasize the role of rapid magma ascent and gas-magma flow dynamics.
The 23–24 March 2021 lava fountain at Mt Etna, Italy
WEBMay 24, 2024 · Following the time correlation of a lava fountain with the gas-phase composition is crucial for drawing the magma-degassing dynamic, responsible for the eruption style and the shift between eruption styles during the three main phases (resumption, paroxysmal and conclusive).
Lava fountain driven by reservoir of gas - Science News
WEBFeb 22, 2005 · The gases driving a lava fountain that spewed from Italy's Mount Etna in June 2000 had accumulated in a reservoir 1.5 kilometers below the mountain's peak, chemical analyses suggest.
Balancing bulk gas accumulation and gas output before and during lava …
WEBDec 10, 2015 · Amount of gas emitted during lava fountains. The volume of gas (V) expelled through a fire fountain can be estimated from the average height of the fountain, its duration (t) and the area of...
Spectroscopic evidence for a lava fountain driven by previously ...
WEBJan 27, 2005 · Lava fountains are spectacular continuous gas jets, propelling lava fragments to heights of several hundred metres, which occasionally occur during eruptions of low-viscosity magmas 1, 2,...