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Volcano

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Ancient Taftan Volcano Signals a Quiet Wake-Up with Satellite-Detected Uplift
environment6 days 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.

via Earth.com|
#environment#geophysics#insar
Naples-area Campi Flegrei Near Breakpoint, Eruption Possible Within a Decade
science6 days 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.

via Live Science|
#campi-flegrei#eruption#phlegraean-fields
Volcanic Plume Reveals Chlorine-Driven Methane Cleanup in the Atmosphere
science14 days 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.

via ScienceAlert|
#atmosphere#chlorine#formaldehyde
Mount Dukono eruption kills three hikers in Indonesia
world18 days ago

Mount Dukono eruption kills three hikers in Indonesia

Mount Dukono in North Maluku erupted on Friday morning, sending a 10-km ash column and prompting a rescue operation for about 20 hikers. Three people—two foreigners and a local resident—died, fifteen were injured and hospitalized, and all surviving hikers were evacuated as authorities investigate possible negligence by operators who allowed hiking despite safety closures and warnings to stay outside the crater’s 4km radius.

via BBC|
#hikers#indonesia#mount-dukono
Tragedy in Halmahera: Mount Dukono erupts in restricted zone, killing hikers
world18 days ago

Tragedy in Halmahera: Mount Dukono erupts in restricted zone, killing hikers

Three hikers—two Singaporeans and a local—were killed when Mount Dukono erupted in a restricted area on Halmahera Island; 15 climbers have descended, with others still missing as search-and-rescue operations continue. The eruption sent a six-mile-high ash cloud, but no towns were threatened, and the guide and porter may face charges for guiding people into the prohibited zone.

via CBS News|
#hikers#indonesia#mount-dukono
Tonga Eruption Cooled the Stratosphere and Redrew How We Read the Sky
science22 days ago

Tonga Eruption Cooled the Stratosphere and Redrew How We Read the Sky

The January 2022 Hunga Tonga eruption sent roughly 146 teragrams of seawater vapor into the stratosphere, cooling that atmospheric layer by about 0.5–1°C rather than warming it, and leaving no clear imprint on global surface temperatures in 2023–2024. The eruption's depth (about 490 feet below sea level) let magma vaporize seawater and fuel the plume, which reached the mesosphere and generated planetary-scale pressure waves and a Mediterranean meteo-tsunami. The event injected more water vapor than any prior eruption and, because the moisture persists, it is expected to influence atmospheric chemistry into the late 2020s, reshaping how scientists model volcanic impacts on the climate.

via The Daily Galaxy|
#climate#eruption#science
Dormant Greek Volcano Reveals Hidden Magma Under 100,000-Year Silence
science24 days ago

Dormant Greek Volcano Reveals Hidden Magma Under 100,000-Year Silence

A new study of the Methana volcano near Athens shows 700,000 years of activity with 31 eruptions, including a nearly 100,000-year quiet interval during which magma continued accumulating underground. The surface calm did not mean safety, challenging the idea that long dormancy equates to extinction and suggesting huge underground reservoirs can fuel powerful future eruptions. The finding urges a reassessment of volcanic risk for “extinct” volcanoes and underscores the need for deeper monitoring in subduction-zone regions.

via Indian Defence Review|
#magma-accumulation#methana#science