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Volcano

All articles tagged with #volcano

Seismic Scan Reveals Metal-Rich Brine Beneath Active Caribbean Volcano
science12 hours ago

Seismic Scan Reveals Metal-Rich Brine Beneath Active Caribbean Volcano

Oxford-led researchers used earthquake data from 1996–2007 across 23 stations to construct a 3D map under the Soufrière Hills volcano, uncovering a 1–1.5 km-wide, ~2 km-deep zone of fluid-rich, metal-bearing brine that could mark the beginnings of a new ore deposit and a geothermal resource. While promising, there’s still uncertainty about exact composition and concentrations, and extracting metals from an active volcano would be challenging; the study demonstrates a non-invasive way to identify such targets, published in Geophysical Research Letters (2026).

via ScienceAlert|
#brine#geophysics#metals
Yellowstone Eruption: Not Doomsday, But Real Localized Risk
science13 days ago

Yellowstone Eruption: Not Doomsday, But Real Localized Risk

Yellowstone sits over a volcanic hotspot and is active, but the USGS says another supereruption is unlikely. If it erupts again, the most probable outcome would be a localized lava flow with possible ash, or a hydrothermal explosion; a full-scale supereruption could devastate nearby areas and potentially affect climate, but such an event is extremely unlikely. Current monitoring shows normal alert levels with background earthquakes, and any major eruption would come with warning signs.

via Interesting Engineering|
#ash#eruption#science
science16 days ago

Magma Chemistry Hints at Potential Return of Taller Kilauea Lava Fountains

USGS scientists link rising lava fountain heights at Kilauea to magma differentiation and chemistry, especially MgO and olivine changes, suggesting a possible new growth phase as magma supply shifts; episode 44 brought a dip with new olivine, followed by renewed increases in episodes 46–48, amid a paused summit eruption and deflation that may affect timing of taller fountains.

via Big Island Video News|
#fountain-heights#kilauea#magma-chemistry
science18 days ago

New Kilauea Crack Sparks Intermittent Flames as Eruption Pauses

A new crack upslope of Kilauea's south vent is producing intermittent large flames while the eruption remains paused; the north vent glows, summit inflation continues, and a lava fountaining episode is forecast around August 8–12. USGS reports flames result from gas pistoning during tremor (about 3–5 times per hour) and maintains Advisory/Yellow alerts.

via Big Island Video News|
#hawaii#kilauea#lava-fountaining
Mount Pelée Unrest Sparks Eruption Fears Over Martinique
science20 days ago

Mount Pelée Unrest Sparks Eruption Fears Over Martinique

Mount Pelée on Martinique has shown renewed unrest, with 124 earthquakes between July 24–31 and 331 for the month, plus ground deformation near the summit; scientists have raised the alert to yellow and caution that while the short-term eruption probability is low, a future eruption cannot be ruled out and could threaten Martinique’s 400,000 residents, recalling the 1902 eruption that killed about 30,000.

via New York Post|
#eruption-risk#martinique#mount-pelee
Fuego Eruption Forces Mass Evacuations as Lava Rivers Flow Toward Guatemalan Villages
world21 days ago

Fuego Eruption Forces Mass Evacuations as Lava Rivers Flow Toward Guatemalan Villages

Guatemala’s Fuego volcano erupted for about a day, sending lava flows and ash up to six kilometres high and prompting hundreds of residents on its slopes to evacuate to shelters; authorities issued a high alert, warned of hot debris flows, closed a road around the range, suspended nearby school classes, and cautioned air traffic, though Guatemala City’s airport remained unaffected.

via The Guardian|
#evacuations#fuego#guatemala
Fresh magma recharges Japan’s Kikai caldera, offering clues on how giant supervolcanoes rebuild
science27 days ago

Fresh magma recharges Japan’s Kikai caldera, offering clues on how giant supervolcanoes rebuild

Underwater seismic surveys show a large, magma-rich reservoir beneath Japan’s Kikai caldera, with new magma entering the system over thousands of years and a lava dome forming about 3,900 years ago. This supports a model in which giant calderas gradually rebuild magma after major eruptions and could apply to other systems like Yellowstone and Toba, aiding efforts to monitor and anticipate future giant eruptions.

via ScienceDaily|
#giant-calderas#kikai-caldera#magma
Antarctica’s Mount Erebus Spits Gold Dust, but Mining Is Off Limits
science28 days ago

Antarctica’s Mount Erebus Spits Gold Dust, but Mining Is Off Limits

Mount Erebus on Ross Island hosts a persistent lava lake whose volcanic gases can carry trace gold particles into the plume. Estimates suggest about 80 grams of gold could be emitted daily (roughly 29 kilograms per year), a multi‑million‑dollar value, but any recovery would violate the Antarctic Treaty Environmental Protocol, keeping the gold out of reach while scientists study Erebus’ magma dynamics and its unique icy environment.

via ZME Science|
#antarctic-treaty#antarctica#gold
Giant of Mars: Olympus Mons Towers Over All Other Volcanoes
space1 month ago

Giant of Mars: Olympus Mons Towers Over All Other Volcanoes

Olympus Mons on Mars rises about 21 kilometers (70,000 feet) and spans roughly 370 miles, making it the largest volcano in the solar system and, by some measures, the tallest mountain. Its gentle slopes and the thin Martian atmosphere mean the summit rises near space; its last major eruption is dated around 25 million years ago, so it’s considered dormant rather than extinct. The volcano grew large thanks to Mars’s low gravity, lack of plate tectonics, and a long eruptive history within the Tharsis region alongside other giant volcanoes, though the exact origin of its base cliffs and whether it could erupt again remain subjects of active research.

via 19FortyFive|
#geology#mars#olympus-mons