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Volcano

All articles tagged with #volcano

Giant of Mars: Olympus Mons Towers Over All Other Volcanoes
space5 days 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.

Antarctica's Mount Erebus Ejects Gold Crystals Worth About $2 Million Annually
science11 days ago

Antarctica's Mount Erebus Ejects Gold Crystals Worth About $2 Million Annually

Antarctica’s Mount Erebus—the southernmost active volcano with a permanent lava lake—releases microscopic crystals of pure gold in its volcanic gases. About 80 grams of gold crystals are emitted daily (roughly $6,000), totaling over $2 million per year, with crystals able to travel up to 1,000 kilometers before depositing on ice. Scientists propose two main theories for formation—direct crystallization from chlorine-rich gases as they cool, or growth on the lava lake surface before release—yet the exact mechanism remains unsolved.

Olympus Mons: Solar System’s giant shield volcano that hides its summit in width
science21 days ago

Olympus Mons: Solar System’s giant shield volcano that hides its summit in width

Olympus Mons on Mars rises about 22 km above the plains and spans roughly 600 km, making it the solar system’s tallest volcano. Its vast width means the summit is often invisible from the slopes, a result of its gentle, shield‑volcano profile built by countless lava flows; its rim is steep and a sprawling 80‑km caldera sits at the top, a consequence of Mars’s stationary crust and lower gravity.

Green fireball streaks over Mayon eruption, likely burned up in atmosphere
science1 month ago

Green fireball streaks over Mayon eruption, likely burned up in atmosphere

A green fireball lit up the sky during Mount Mayon’s eruption in the Philippines, but scientists concluded it probably burned up in Earth’s atmosphere rather than striking the ground or the volcano. Energy estimates were around 6.8 million kilograms of gunpowder, and the event was captured on livestreams and cameras. The lava flow continued beneath as researchers stressed that such space rocks are typically slowed or disintegrated by the atmosphere, with roughly 25 million meteors expected to be handled by it daily. It’s a rare, dramatic glimpse into the volatility of our planet.

Ancient Taftan Volcano Signals a Quiet Wake-Up with Satellite-Detected Uplift
environment1 month ago

Ancient Taftan Volcano Signals a Quiet Wake-Up with Satellite-Detected Uplift

Satellite data show Taftan, a remote volcano in southeastern Iran, has risen about 9 cm in 10 months, signaling pressure buildup near the summit in a shallow hydrothermal/magmatic system. The uplift, centered near the summit, likely reflects gas and fluids moving through cracks rather than magma reaching the surface, so eruption is not imminent but ongoing monitoring is essential. Authorities should track gas emissions, install a basic seismic/GPS network, and update hazard maps while satellites continue to monitor.

Naples-area Campi Flegrei Near Breakpoint, Eruption Possible Within a Decade
science1 month ago

Naples-area Campi Flegrei Near Breakpoint, Eruption Possible Within a Decade

Campi Flegrei, the volcanic caldera west of Naples, is accelerating toward a breaking point, with a new study suggesting the system could transition within the next decade. The outcome is uncertain: it could trigger an eruption or another change in the volcano's internal plumbing. About 500,000 people live in the area, so researchers plan ongoing forecasts to support emergency planning, but no date or size of an eruption can be determined from the current data.

Volcanic Plume Reveals Chlorine-Driven Methane Cleanup in the Atmosphere
science1 month ago

Volcanic Plume Reveals Chlorine-Driven Methane Cleanup in the Atmosphere

Researchers analyzing the 2022 Hunga Tonga eruption found unusually high formaldehyde in the plume, indicating methane was being rapidly destroyed by chlorine radicals formed in sunlight-activated reactions. The study demonstrates a natural methane-removal pathway in volcanic plumes and quantifies about 900 metric tons per day of methane destroyed—far less than the eruption’s total methane output—while suggesting chlorine-mediated methane destruction could inform future atmospheric cleanup research, though practical application remains uncertain.