Tag

Volcanology

All articles tagged with #volcanology

science11 days ago•8 min saved

Beneath Crater Lake: A Submerged World of Fire, Ice, and Life

Crater Lake in Oregon is the deepest US lake at 1,949 feet, occupying Mount Mazama’s caldera formed after a massive eruption 7,700 years ago; with no inlet or outlet, its level is set by evaporation and seepage. Its bottom features submerged cones, a major landslide deposit, ancient lava plains, and active hydrothermal vents that harbor chemolithoautotrophic bacteria, while Wizard Island rises above the lake as a post-eruption cone. The lake’s depth and floor map were built over more than a century of measurements, from lead-line soundings to modern multibeam sonar in 2000, and ongoing caldera activity may produce future underwater eruptions that remain hidden beneath the water.

via WorldAtlas|

#crater-lake #deep-lake-ecology #geology

science27 days ago•6 min saved

Heat-Driven Magma May Propel Towering Lava Fountains

A study of La Palma's 2021 Tajogaite eruption shows superheating can dissolve crystal seeds and delay crystallization for hours, keeping magma fluid and rising rapidly to potentially power dramatic lava fountains, with implications for eruption forecasting.

via ScienceDaily|

#crystallization #eruption-dynamics #magma

science3 months ago•36 min saved

Satellites Capture Undersea Volcano Eruption, Yet Seafloor Secrets Remain Unclear

Satellites imaged an underwater volcanic eruption, but scientists still don’t know what’s actually happening on the seafloor, underscoring gaps in our understanding of deep-sea volcanic activity.

via Yahoo|

#note-five-tags-requested #oceanography #satellites

earth-science3 months ago•12 min saved

Iceland’s Quiet Undersea Volcanoes Turn Explosive

Geophysicists aboard the Meteor on Expedition M201 found flat-topped, submerged volcanoes along the Reykjanes Ridge off Iceland, indicating that mid-ocean ridges can erupt explosively at shallower depths when seawater flashes to steam; a mechanism that may explain phantom islands like Surtsey and suggests future surface eruptions could occur as ice and pressure conditions change.

via Quanta Magazine|

#earth-science #iceland #mid-ocean-ridge

science3 months ago•5 min saved

Campi Flegrei’s Self-Accelerating Unrest Points Toward Major Shift Near Naples

A preprint analysis finds Campi Flegrei, the Naples-area caldera, is showing a self-reinforcing acceleration in seismic activity and ground uplift, suggesting a potential major geological shift could occur around 2030–2034. While not a specific eruption forecast, the pattern raises significant risk to nearby residents and underscores the need for ongoing monitoring and improved predictive models.

via Indian Defence Review|

#caldera-uplift #campi-flegrei #finite-time-singularity

world3 months ago•12 min saved

Ancient undersea slab keeps Bermuda afloat, study finds

Scientists used more than two decades of seismic data to map Bermuda’s subsurface and found a light, ~12-mile-thick slab of ancient rock beneath the island. Formed 30–35 million years ago, this slab floats under the crust and keeps Bermuda elevated above the sea without current volcanism, explaining the island’s buoyancy and challenging the classic mantle plume model. The findings tie Bermuda’s uplift to broader mantle convection processes and link to the region’s gravity and magnetic anomalies around the Bermuda Rise.

via Daily Express|

#bermuda-rise #bermuda-triangle #geology

science3 months ago•17 min saved

Volcano Forecasting: The Quest for Weather‑Style Warnings

Scientists are inching toward weather‑style forecasts for volcanic eruptions, but predicting eruptions with that level of certainty remains challenging because magma sits deep and each volcano is unique. Advances in seismology, ground deformation monitoring, gas measurements, and machine learning are enabling earlier warnings and more detailed volcano models. Projects like Ex-X and SZ4D seek to uncover the governing physics, improve data collection, and develop archetype volcano models that could one day output probabilistic eruption forecasts days or weeks in advance, but achieving a generalized, reliable forecast will require decades of data and a far more extensive global monitoring network.

via Quanta Magazine|

#eruption-forecasting #geophysics #hazard-mitigation

science4 months ago•4 min saved

Yellowstone Magma Flows as a Broad, Slow River Beneath North America

A new Science study argues Yellowstone’s volcanism is driven by a broad, slow-moving flow of hot rock beneath North America, forming a connected magma system rather than a single deep chamber, with eastward mantle motion tied to Farallon Plate remnants—reshaping how scientists understand eruptions, which remain unpredictable and not overdue.

via The Daily Galaxy|

#magma #mantle-flow #plate-tectonics

science4 months ago•4 min saved

Dormant Giant Under Tuscany: Seismic Mapping Reveals Massive Underground Magma

Scientists using seismometers mapped a vast underground magma reservoir beneath Tuscany, Italy—comparable in size to Yellowstone’s magmatic system—yet with no eruptions. The dormant chamber, detected to a depth of 15 kilometers, could inform geothermal development and mineral exploration while raising questions about why it has remained inactive.

via The Daily Galaxy|

#geothermal #magma #science

space4 months ago•6 min saved

Orpheus VTOL Aims to Probe Mars’ Hidden Volcanoes for Life Signs

Researchers from the SETI Institute unveiled Orpheus, a vertical-takeoff hopper designed to explore Mars’ volcanic regions—Cerberus Fossae and Cerberus Tholus—by accessing deep pits and caves to search for biosignatures, using onboard tools like a color camera, near-infrared spectrometer, and ground-penetrating radar, in hopes of finding signs of life beneath the surface where conditions may be more hospitable.

via The Daily Galaxy|

#astrobiology #mars #space

science8 months ago•6 min saved

Scientists Reveal First 3D Images of Mexico's Popocatépetl Volcano

Scientists from Mexico's UNAM have created the first detailed 3D images of Popocatépetl's interior, revealing magma pools and improving understanding of its activity to better predict eruptions and protect nearby populations.

via ABC News|

#3d-imaging #popocatepetl #science

science9 months ago•4 min saved

Scientists Monitor Rising Eruption Risks at Oregon's Axial Volcano

Scientists have captured the most detailed 3D seismic images of Axial Volcano off Oregon, revealing complex internal processes and challenging previous theories about silica enrichment in its lava, which could improve understanding of underwater volcano eruptions.

via University of Nevada, Reno|

#axial-volcano #science #seismic-imaging

science10 months ago•2 min saved

Scientists Unveil New Seismic Method to Predict Mount Etna Eruptions

Scientists have developed a new method to predict eruptions at Mount Etna by monitoring the b value, which measures earthquake magnitudes, allowing earlier warnings of potential eruptions based on crustal stress changes and magma movement, potentially providing critical lead time for nearby communities.

via ABC News - Breaking News, Latest News and Videos|

#earthquake-monitoring #eruption-prediction #geophysical-research

science1 year ago•3 min saved

Pacific Coast Underwater Volcano May Erupt Soon, Scientists Warn

Researchers monitor the Axial Seamount off Oregon's coast, which may erupt by year's end, but currently shows no signs of imminent eruption; the volcano's activity helps scientists understand volcanic behavior without posing a threat to humans.

via yahoo.com|

#axial-seamount #eruption-forecast #oregon-coast

science1 year ago•2 min saved

Pacific Coast on Alert for Major Underwater Volcano Eruption

Scientists are monitoring the Axial Seamount off Oregon for signs of a potential eruption in 2025, which could provide valuable insights into volcanic activity without posing risks to humans, as the volcano is located far from populated areas.

via Axios|

#axial-seamount #eruption-prediction #pacific-ocean