OBSERVATÓRIO VULCANOLÓGICO E GEOTÉRMICO DOS AÇORES
O OVGA é um Centro de Ciência que desenvolve atividade de investigação aplicada e de divulgação científica na área da Vulcanologia, da Sismologia e da Geotermia.
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Researcher Charlotte Pearson points to the light tree ring that could mark the year of the Thera eruption. (Mikayla Mace).
Some 3,000 years ago, the volcano on the Greek island of Thera—now known as Santorini—experienced one of the largest eruptions in Earth’s recorded history.
The cataclysm sent seismic waves shuddering through the earth, cracking through layers of rock and inundating nearby islands with catastrophic waves. Rivers of...
Eruptive fissure at Piton de la Fournaise volcano on 6 April (image: OVPF)
OVPF reported that eruption continues on the eastern flank. The seismic station records, since 5 April, 189 volcano-tectonic earthquakes at approx. 2 km depth beneath the southeastern part of the Dolomieu crater. These earthquakes testify to the weakening of the environment, either by a circulation of fluid or the emptying of a reservoir, most certainly in connection with the feeding...
The ash plume from the Kilauea volcano on the big island of Hawaii was pictured May 12, 2018, from the International Space Station.
Credits: NASA
Instead of looking up to the sky for bright bursts of fiery color, a research team spent Fourth of July 2018 peering down at fiery globs of molten lava from a sky-diving airplane. Bolted to their plane was a new NASA instrument designed to detect each time the volcano took a breath, as its caldera swelled and...
Satellite data helped scientists locate the volcanic source of a pumice raft floating in the South Pacific Ocean, illustrating their promise in locating and monitoring undersea eruptions.
On 21 August 2019, a pumice raft close to the Exclusive Economic Zone border between Fiji and Tonga was visible from space. Satellite data, combined with seismic readings, helped locate the undersea volcano that was the source of the pumice. Credit: European Space Agency,
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