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La Palma volcano update: Volcanic lightning becoming more frequent

Вс, 31 окт 2021, 13:02
13:02 PM | ПЇЅПЇЅПЇЅПЇЅПЇЅ: T
Volcanic lightning at the eruption on La Palma (image: INVOLCAN)
Volcanic lightning at the eruption on La Palma (image: INVOLCAN)
Scientists from INVOLCAN documented several volcanic lightnings seen in the eruption column.
Over the past days, these have become more frequent. This goes along with the observed increase in explosive behaviour at the vents - more material is being fragmented into ash (as opposed to liquid lava fountains) and the resulting particles are probably finer as well.
Such volcanic "thunderstorms" are often seen during explosive eruptions producing large quantities of ash, although the details are still poorly understood. In a simplified model, the lightnings are the result of electric charges accumulating in different parts of the eruption cloud, where friction between the ash grains rip of electric charges (electrons) from each other. The more quantity of ash emitted, the faster and more turbulent it is moving and the finer the ash grains, the more likely this process occurs.
Video of the explosive activity yesterday:

Предыдущие новости

Sun, 31 Oct 2021, 09:56

La Palma volcano eruption update: intense ash emissions, no end in sight despite decrease of quakes

View of the eruption at La Palma this morning (image: Canarias TV live cam)
Eruptive activity remains elevated, dominated by strong ash emissions reaching up to 18,000 ft (5.5 km) altitude today, but fortunately drifting west over the Atlantic ocean and sparing the airport. Local sources reported loud explosions could be heard over night. The eruption has been becoming increasingly "ashy", or explosive, at least when it comes to what can be seen at the vents: ... Read all
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La Palma вулкан
щитовой вулкан 2426 m
Canary Islands, 28.58°N / -17.84°W
Текущее состояние: normal or dormant (1 из 5) La Palma Вулкан-извержения:
2021 (Sep - ongoing), 1971, 1949, 1712, 1677-1678, 1646, 1585
Типичный извержения стиль
effusive

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