Articles tagged with Volcanic Eruptions
Researchers used zircon crystals to unlock information about early Earth's magmas and plate tectonic activity, suggesting that the process was occurring more than 4.2 billion years ago. This finding could be beneficial in the search for life on other planets.
Researchers used machine learning techniques to analyze seven years' worth of seismic data from Axial Seamount, identifying new signals including fin whale calls, tremors, earthquakes, and lava events. This study improves understanding of volcano dynamics and aids in predicting eruptions.
A new camera design allows for cheaper and more efficient long-term volcano monitoring, enabling researchers to track gas emissions and predict eruptions. The camera's affordability and user-friendliness make it accessible to more volcanologists, facilitating new research opportunities.
Researchers Paul Byrne and Rebecca Hahn have compiled a global catalog of 85,000 volcanoes on Venus, providing the most comprehensive understanding of the planet's volcanic properties. The dataset includes detailed analyses of volcano distribution, size, and clustering, which will aid in locating future active lava flows.
Researchers discovered that as magma production decreased, volcanoes became increasingly complex, with internal magma pockets and reservoirs forming. The study provides insights into volcanic eruption processes and can inform our understanding of active continental hotspot volcanoes globally.
Researchers detected significant thermospheric fluctuations with multiple wave modes after the Tonga eruption, affecting global neutral density up to 500 km altitude. The study suggests that gravitational waves, Lamb waves, and tsunami waves may transmit energy upward, influencing thermospheric density.
A new research paper by University of Alaska Fairbanks Geophysical Institute professor Robert Herrick revealed a nearly 1-square-mile volcanic vent on Venus, changing in shape and growing over eight months. This change is associated with volcanic activity.
The study of Doublet Pool reveals that the interval between episodes of thumping reflects the amount of energy heating the pool, while also indicating heat loss through the surface. The researchers found that wind speed over the pools was correlated with silence intervals, suggesting that blowing wind removes heat energy from the water.
Scientists at Cornell University have discovered a way to precisely locate magma storage in volcanoes, offering improved risk assessment for eruptions. By analyzing carbon dioxide-rich fluids trapped within cooled crystals, they can determine the depth of magma storage and scorching reservoirs with unprecedented accuracy.
A new analysis of seismic data recorded after the Tonga eruption has revealed two distinct sequences of events, including quasi-periodic explosions and a massive final event. The study used back-projection techniques to tease out details from teleseismic P waves, shedding light on the volcano's internal dynamics.
Researchers studied ancient sediment and microfossils to understand the Ocean Anoxic Event 2 (OAE2), a significant environmental disruption that choked oxygen from oceans. The team proposes a new hypothesis for the Plenus Cold Event, which briefly interrupted intense greenhouse temperatures due to ocean acidification.
A team led by the University of Colorado Boulder discovered a unique microbial community on the newly formed Hunga Tonga Hunga Ha'apai island, which metabolizes sulfur and atmospheric gases. The microbes were found to be similar to those in hydrothermal vents, hot springs, and other volcanic systems.
Researchers identified seven exotic igneous clasts in Chang'e-5 samples, providing critical information about the Moon's lithological diversity and regolith gardening process. The findings indicate that there are still unknown geological units on the moon, which may aid future lunar exploration missions.
A team led by Professor Thorsten Hoffmann uses small, portable observation drones equipped with miniaturized sensors to analyze volcanic gases and predict eruptions. The ratio of carbon dioxide levels to sulfur dioxide can reveal the likelihood of an impending eruption.
A recent VLA and ALMA study investigated Jupiter's atmosphere and Io's volcanic activity, shedding light on the giant planet's complex dynamics. The research revealed the vertical structure of Jupiter's atmosphere and found high-temperature compounds, including NaCl and KCl, in Io's atmosphere, suggesting differences in subsurface magm...
Researchers from the University of Washington analyzed the Hunga Tonga-Hunga Ha'apai eruption in the South Pacific, discovering that ionosphere signals can help explain why tsunami waves grew larger and traveled faster than predicted. The study validated the use of GPS signals traveling through the atmosphere to track events on the gro...
Scientists from the University of Arizona have discovered a giant active mantle plume pushing the surface of Mars upward, causing earthquakes and volcanic eruptions. The finding suggests that Mars' deceptively quiet surface may hide a more tumultuous interior than previously thought.
The ALARM project has developed a prototype system that monitors natural phenomena affecting aviation, such as volcanic ash and thunderstorms. The system uses satellite data and weather forecasts to predict the impact of aircraft on climate change, identifying 'ECHO areas' with high environmental risk.
A team at the University of Tokyo has discovered that analyzing the ratio of argon-40 to helium-3 in magma gases can indicate the risk of different types of eruption. By monitoring these gas ratios, scientists hope to develop a portable equipment for real-time, on-site measurements, enabling early warning systems and potentially saving...
A new study by University of Helsinki researchers finds that magma floods can form in thick tectonic plates, contradicting the long-held assumption. The research uses geochemical modelling to demonstrate that high-temperature mantle sources can produce magmas with similar trace element compositions as low-pressure conditions.
The Subduction Zones in Four Dimensions (SZ4D) initiative aims to improve understanding of subduction zone hazards through a collaborative effort. The plan involves deploying new instrumentation and developing more accurate models to predict large earthquakes, volcanic eruptions, and landslides.
Researchers used the parallax effect to measure the height of the volcano's plume, reaching an altitude of 57 km, surpassing previous records. The study provides new insights into volcanic eruptions and their impact on the climate.
A study reveals a consistent pairing of volcanic ash and low ocean oxygen events during times of rapid climate warming at the end of the last ice age. The research suggests that volcanic eruptions may increase as the planet warms, posing risks to populated regions.
Researchers found that mantle melting-point depression due to fusible components could generate young lunar volcanism. The Chang'E-5 samples, returned in 2020, revealed surprisingly young volcanic activity only 2 billion years old, contradicting the long-held assumption that the Moon has been geologically dead since then.
A recent study published in Geophysical Research Letters reveals that the Tonga volcano eruption stimulated a rapid and massive bloom of ocean phytoplankton, covering an area nearly 40 times the size of Oahu within just 48 hours. The bloom was triggered by the deposition of volcanic ash, which supplied nutrients for phytoplankton growth.
Sturt Manning's statistical analysis has narrowed the time range for the Thera volcano eruption to between 1609–1560 BCE with a 95.4% probability. This new timeline synchronizes Eastern Mediterranean civilizations and rules out ancillary theories, potentially rewriting history.
Researchers have confirmed the existence of Pekeris waves, a type of atmospheric wave theorized in 1937 but never proven to occur naturally. The waves were detected following the 2022 Tonga volcanic eruption using state-of-the-art observational data and computer simulations.
A new study suggests that massive volcanic eruptions were the primary cause of mass extinctions, including the one that wiped out the dinosaurs. The research found a strong temporal connection between flood basalt eruptions and significant climatic events.
Scientists have discovered a slowing of continental plate movement was the critical event that enabled magma to rise to the surface and deliver devastating knock-on impacts. This fundamental process controlled the evolution of climate and life on Earth throughout its history.
Researchers found the Tonga tsunami reached 90 meters in height, outperforming previous tsunamis like 2011 Japan tsunami. The event emphasized the need for improved detection systems, as volcano-based tsunamis are currently 30 years behind earthquake-based event monitoring tools.
Researchers from the University of Cambridge's CSER highlight the need for improved surveillance and public education to mitigate the impact of volcanic eruptions. The risk of a magnitude seven explosion in the next 100 years is one-in-six, with potential consequences including abrupt climate change and collapse of civilizations.
Scientists have discovered that volcanic super eruptions occur when huge accumulations of magma deep in the Earth's crust move rapidly to the surface, disrupting pre-existing rock. This process takes place over millions of years, but the magma disrupts the crust and then erupts in just a few decades.
Researchers at Rice University propose a new scenario explaining the 2016 discovery of tridymite by NASA's Curiosity rover. They suggest that magma cooled slowly in a chamber below a volcano, producing concentrated silicon-rich ash that was later weathered and sorted by water.
Researchers at Nagoya University used satellite data to track ionospheric disturbances after the 2022 Tonga underwater eruption, detecting earlier signs of tsunami waves. The team found that electromagnetic waves traveled 1000 km/s, much faster than air pressure waves, allowing for potentially quicker tsunami warnings.
Researchers analyzed the Hunga Tonga-Hunga Ha'apai volcano's eruption to understand its effects on atmospheric waves. The blast provided an unprecedented view of atmospheric waves, allowing scientists to better predict the weather and climate.
A new study suggests that dinosaurs were well adapted to cold temperatures and survived a mass extinction event caused by massive volcanic eruptions. The research found evidence of dinosaur footprints and pebbles in lake sediments at high latitudes, indicating that they thrived in conditions where other reptiles died.
The Hunga Tonga-Hunga Ha'apai submarine volcano eruption created the largest recorded volcanic explosion, producing massive gravity and atmospheric waves that reverberated around the earth. The study, published in Nature, highlights the importance of this event for improving weather and climate models.
Researchers at Mainz University found the Cumbre Vieja lava to be exceptionally low in viscosity, resulting in rapid flow and devastating damage. The study published in Nature Communications revealed that the lava's composition, particularly its silica content, contributed to its fluidity.
A team of geologists successfully forecasted a Sierra Negra volcano eruption in June 2018 using a supercomputer-powered model. The model predicted an imminent eruption five months before it occurred, highlighting the power of high-performance computing in volcanic forecasting.
Researchers from the University of Oregon studied a persistent lava lake at Kīlauea's summit, finding that seismic signals encode resonance of magma sloshing in and out of the shallow magma chamber. The study provides new insights into volcanic gas migration and magma temperature, shedding light on the volcano's dynamics.
The Hunga Tonga volcano's 2022 eruption was the biggest bang since Krakatoa, with a pressure wave traveling around the world four times over six days. The explosion produced a shockwave comparable to the largest nuclear test, yet lasted four times longer.
Researchers characterized the Hunga volcano's atmospheric waves, providing exceptional resolution of the evolving wavefield compared to historic events. The data revealed Lamb waves, rare and low-frequency pressure waves associated with large eruptions and nuclear detonations.
A team of scientists from 17 nations studied the Hunga submarine volcano eruption, which created a variety of atmospheric wave types. The research provides insights into the behavior of Lamb waves, which are rare and linked to tsunami and volcanic plume generation.
A new volcanic modeling study found that ice-capped volcanoes like Westdahl Peak are delayed in eruption by approximately seven years due to the added pressure from glacial ice. This increase in time may seem insignificant on a geologic scale, but it's significant on the human time scale.
Scientists from the University of Geneva discover that copper deposits are formed by mechanisms similar to those causing large volcanic eruptions. The 'porphyry' deposits, containing copper, form when hot fluids release from cooling magmas and develop under the earth's surface.
A team of researchers has confirmed that a volcanic eruption in 1628 B.C. was not Thera but Alaskan volcano Aniakchak II, helping to narrow down the potential dates for the Thera eruption's occurrence between 1611 B.C., 1562-1555 B.C. and 1538 B.C.
A study by KyotoU scientists has discovered a significant relationship between volcanic activity and seismic faults. The research team found that the 2016 Kumamoto earthquakes were triggered by the eruption of Mount Aso, which caused a shift in the fault's movement pattern.
A seismic algorithm has been developed to detect and locate volcanic eruptions in near real-time. The algorithm was tested using the Hunga Tonga Ha'apai eruption, which ejected around 10 km³ of ash and lava, making it the largest explosive eruption of the 21st century.
UC Santa Barbara geologists Melissa Scruggs and Frank Spera led an international team in publishing the first holistic account of the Tonga eruption, which devastated the nation on January 15. The eruption triggered massive tsunamis and atmospheric waves globally, with an ash plume reaching over 58 kilometers into the atmosphere.
Researchers found a persistent 20% reduction in carbon dioxide seeping up from the ground during the spring of 2017, coinciding with intense drought and record-high Sierra Nevada snowpack. The study suggests that changes in Earth's hydrology due to climate change can impact volcanic emissions.
A massive volcanic eruption at the end of the Triassic period caused a global cooling effect, leading to the mass extinction. The event paved the way for the rise of dinosaurs as their natural predators went extinct.
Researchers estimate 60,000-year timeline of massive volcanic eruptions, finding 85 large global eruptions and 69 larger than the 1815 Mount Tambora eruption. This new data helps improve climate models by providing insights into Earth's climate sensitivity.
A new study led by Smithsonian volcanologist Dan Rasmussen finds that water content in magma is a significant factor controlling its storage depth. The research provides crucial insights into the physics of magma storage beneath volcanoes, which can aid in predicting volcanic eruptions.
Researchers studied a large lava flow from Popocatépetl to better understand possible future eruption scenarios. The study found that a similar lava flow today could severely damage infrastructure and displace local residents, highlighting the need for preparedness and awareness of volcanic hazards.
A fresh analysis suggests that the global cooling effect of the Hunga Tonga-Hunga Ha'apai volcano eruption will be smaller than expected. However, the researchers warn that a one-time-only event may not be sufficient to overwhelm the longer-term global warming tendency.
A new plant species was discovered based on the presence of distinctive fruit capsules that likely exploded to disperse their seeds. The fossils were found in India's Deccan Traps, a complex mosaic of basalt rocks leftover from volcanic eruptions that lasted up to 1 million years.
Research reveals that magmas from Mount Etna and Mount Vulture have extremely high Nb/Ta ratios, indicating a deep carbon-rich lithospheric mantle beneath southern Italy. This process contributes significantly to global volcanic CO2 emissions.
A 2020 volcanic eruption in the Philippines showed how explosive eruptions can create lightning, shedding light on the eruption's behavior. The study used global lightning detection, satellite images, and social media photos to characterize the eruption.
The 2018 Anak Krakatau volcano collapse in Indonesia was triggered by long-term destabilization, not a sudden explosive eruption. The study found that the disaster was less likely to have been caused by magma forcing its way to the surface and triggering the landslide.
The Omo I fossils, found in Ethiopia, have been dated to be at least 230,000 years old, pushing back the known emergence of Homo sapiens by tens of thousands of years. This reevaluation was made possible through advanced geochemical analysis and a new understanding of volcanic ash layers.