Volcanoes

Volcanoes News -- ScienceDaily Volcano News and Research. Latest scientific research on how volcanoes work, predicting volcanic eruptions, climate change due to volcanic eruption and more.

  • Large volcanic island flank collapses trigger catastrophic eruptions
    on January 18, 2018 at 7:29 pm

    New research not only implies a link between catastrophic volcanic eruptions and landslides, but also suggests that landslides are the trigger. At the heart of Tenerife and standing almost 4 km high, Teide is one of the largest volcanoes on Earth. Over a period of several hundred thousand years, the previous incarnations of Teide have undergone a repeated cycle of very large eruptions, collapse, and regrowth. […]

  • A close-up look at an uncommon underwater eruption
    on January 10, 2018 at 7:13 pm

    A new article describes the first up-close investigation of the largest underwater volcanic eruption of the past century. […]

  • Chemical tipping point of magma determines explosive potential of volcanoes
    on December 13, 2017 at 7:35 pm

    Scientists provide evidence, for the first time, that a subtle tipping point of the chemistry of magmas clearly separates effusive from explosive eruptions worldwide. […]

  • New Tongan island made of 'tuff' stuff, likely to persist years, NASA shows
    on December 11, 2017 at 5:01 pm

    In late December 2014, a submarine volcano in the South Pacific Kingdom of Tonga erupted, sending a violent stream of steam, ash and rock into the air. The ash plumes rose as high as 30,000 feet (9 kilometers) into the sky, diverting flights. When the ash finally settled in January 2015, a newborn island with a 400-foot (120-meter) summit nestled between two older islands -- visible to satellites in space. […]

  • Unearthing the underground effects of earthquakes and volcanoes
    on December 6, 2017 at 5:25 pm

    Researchers analyzed high-resolution seismic velocity data from 36 seismograph stations across the island of Kyushu to identify variations before, during, and after the MW 7.0 2016 Kumamoto earthquake. Velocity decreased in the region of the rupture fault when the earthquake struck, and then gradually recovered, although this recovery showed spatial variability. This variability corresponded to aftershock concentration and volcanic activity. The findings may be useful for disaster prediction and preparedness. […]

  • Submarine volcanoes add to ocean soundscape
    on December 4, 2017 at 2:12 pm

    Most volcanoes erupt beneath the ocean, but scientists know little about them compared to what they know about volcanoes that eject their lava on dry land. […]

  • Eruption clues: Researchers create snapshot of volcano plumbing
    on November 29, 2017 at 5:02 pm

    Researchers have studied the journey of magma, or molten rock, in one of Europe's largest and most active volcanoes, Mount Etna. They applied several techniques to create a more accurate picture of the volcano's plumbing system and how quickly the magma rises to the top to cause an eruption. Their findings contribute to our understanding of how and when volcanoes erupt. […]

  • Time between world-changing volcanic super-eruptions less than previously thought
    on November 29, 2017 at 2:04 pm

    After analyzing a database of geological records dated within the last 100,000 years, a team of scientists has discovered the average time between so-called volcanic super-eruptions is actually much less than previously thought. […]

  • Is Agung going to blow?
    on November 28, 2017 at 4:35 pm

    With Mount Agung on eruption watch in Bali, a researcher notes that monitoring emissions from the volcano may aid volcanologists in determining whether or not an Agung eruption is imminent. […]

  • When magma prevents volcanic eruptions
    on November 27, 2017 at 5:47 pm

    Calderas are huge topographic depressions formed by large volcanic eruptions. They sometimes experience an inflation of their floor of up to a kilometer, caused by magma injection. This process, dubbed 'caldera resurgence,' remains one of the least understood in volcanology. Researchers now show that non-erupted magma left after the caldera-forming eruption behaves as a 'rubber sheet' that inhibits the rise of the newly injected magma. […]

  • Climate change could increase volcano eruptions
    on November 23, 2017 at 2:54 pm

    Shrinking glacier cover could lead to increased volcanic activity in Iceland, warn scientists in a new report. […]

  • Cool idea: Magma held in 'cold storage' before giant volcano eruption
    on November 6, 2017 at 8:22 pm

    Long Valley, California, has long defined the 'super-eruption.' About 765,000 years ago, a pool of molten rock exploded into the sky. Within one nightmarish week, 760 cubic kilometers of lava and ash spewed out in the kind of volcanic cataclysm we hope never to witness. A new study shows that the giant body of magma -- molten rock -- at Long Valley was much cooler before the eruption than previously thought. […]

  • Ice sheets may melt rapidly in response to distant volcanoes
    on October 24, 2017 at 3:06 pm

    Volcanic eruptions have been known to cool the global climate, but they can also exacerbate the melting of ice sheets, according to a new paper. […]

  • New magma pathways after giant lateral volcano collapses
    on October 23, 2017 at 6:55 pm

    Giant lateral collapses are huge landslides occurring at the flanks of a volcano. Such collapses are rather common events during the evolution of a large volcanic edifice, often with dramatic consequences such as tsunami and volcano explosions. These catastrophic events interact with the magmatic activity of the volcano, as new research suggests. […]

  • Scientists determine source of world's largest mud eruption
    on October 17, 2017 at 3:43 pm

    More than 11 years after the Lusi mud volcano first erupted on the Indonesian island of Java, researchers may have figured out why the mudflows haven't stopped: deep underground, Lusi is connected to a nearby volcanic system. […]

  • Is it gonna blow? Measuring volcanic emissions from space
    on October 13, 2017 at 12:02 am

    Carbon dioxide measured by a NASA satellite pinpoints sources of the gas from human and volcanic activities, which may help monitor greenhouse gases responsible for climate change. […]

  • One of planet's largest volcanic eruptions
    on October 11, 2017 at 1:11 pm

    Researchers have determined that the Pacific Northwest was home to one of the Earth's largest known volcanic eruptions, a millennia-long spewing of sulfuric gas that blocked out the sun and cooled the planet. Only two other eruptions -- the basalt floods of the Siberian Traps and the Deccan Traps -- were larger, and they led to two of the Earth's great extinctions. […]

  • New study analyzes volcanic fatalities in more detail than ever before
    on October 6, 2017 at 2:18 pm

    Building on existing information and databases relating to volcanic fatalities, scientists have, for the first time, been able to classify victims by activity or occupation and look at the distance of their death from the volcano. […]

  • Climate change can goad volcanoes into life
    on September 25, 2017 at 3:14 pm

    Geologists have analyzed volcanic data from the Messinian salinity crisis in the Mediterranean Sea, when the Strait of Gibraltar was blocked and the Mediterranean temporarily isolated from the Atlantic. After testing various scenarios, the geologists concluded that the increase in magmatic activity could only be explained by the almost total drying out of the Mediterranean. […]

  • Hot spot at Hawaii? Not so fast
    on August 18, 2017 at 3:58 pm

    Geophysicists use a new model to conclude that volcanic hot spots around the globe aren't moving as fast as recently thought. […]

  • Supervolcanoes: A key to America's electric future?
    on August 16, 2017 at 12:49 pm

    Researchers show that lake sediments preserved within ancient supervolcanoes can host large lithium-rich clay deposits. A domestic source of lithium would help meet the rising demand for this valuable metal, which is critical for modern technology. […]

  • Scientists improve forecast of increasing hazard on Ecuadorian volcano
    on August 7, 2017 at 7:17 pm

    Researchers have shown an increasing volcanic danger on Cotopaxi in Ecuador using a powerful technique known as Interferometric Synthetic Aperture Radar (InSAR). […]

  • 'Shadow network' keeps communities safe from deadly volcano
    on July 19, 2017 at 1:01 pm

    'Shadow networks' linking volunteers with authorities can help keep some of the millions of people living near dangerous volcanoes safer, suggests a new study. These informal networks see community members working in close collaboration with scientists and government officials on monitoring, communications, training and evacuation processes. […]

  • New research uses satellites to predict end of volcanic eruptions
    on July 14, 2017 at 1:38 pm

    Infrared satellite data could be used to predict when lava flow-forming eruptions will end, researchers recently discovered. […]

  • Crystals help volcanoes cope with pressure
    on July 11, 2017 at 1:28 pm

    Researchers have discovered that volcanoes have a unique way of dealing with pressure -- through crystals. If enough crystals can develop in rising magma then a network of microscopic crystals can lessen the internal pressure of rising magma and reduce the explosiveness of eruptions. […]

  • 'Bulges' in volcanoes could be used to predict eruptions
    on June 28, 2017 at 6:49 pm

    Researchers have developed a new way of measuring the pressure inside volcanoes, and found that it can be a reliable indicator of future eruptions. […]

  • Predicting eruptions using satellites and math
    on June 28, 2017 at 1:58 pm

    Volcanologists are beginning to use satellite measurements and mathematical methods to forecast eruptions and to better understand how volcanoes work, shows a new article. […]

  • Volcanic crystals give a new view of magma
    on June 15, 2017 at 6:27 pm

    Volcanologists are gaining a new understanding of what's going on inside the magma reservoir that lies below an active volcano and they're finding a colder, more solid place than previously thought, according to new research. […]

  • Deep magma reservoirs are key to volcanic 'super-eruptions,' new research suggests
    on June 2, 2017 at 12:50 pm

    A new study shows the importance of large reservoirs in creating Earth’s most powerful volcanic eruptions and explains why they are so rare. […]

  • How X-rays helped to solve mystery of floating rocks in the ocean
    on May 23, 2017 at 6:41 pm

    Experiments have helped scientists to solve a mystery of why some rocks can float for years in the ocean, traveling thousands of miles before sinking. […]