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Keyword: volcanoes

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  • Ice Cores Reveal Huge Volcanic Eruptions, Bigger Than Anything in The Last 2,500 Years

    03/21/2022 7:34:30 AM PDT · by Red Badger · 62 replies
    https://www.sciencealert.com ^ | 20 MARCH 2022 | DAVID NIELD
    Scientists studying ice cores packing in some 60,000 years of history have found signs of thousands of volcanic eruptions across that time, stretching back to the last Ice Age – with 25 of the eruptions larger than anything Earth has seen in the last 2,500 years. Researchers excavated the cores near both poles: in Antarctica (where 737 eruptions were logged) and Greenland (where 1,113 eruptions were found). A total of 85 eruptions were large enough to leave evidence behind at both poles. That evidence takes the form of sulfuric acid deposits left behind by the eruptions. It gives researchers clues...
  • Scientists Discover and Image Explosive Deep-Ocean Volcano

    12/18/2009 11:23:20 PM PST · by Tom Hawks · 8 replies · 776+ views
    Earlier today scientists funded by NOAA and the National Science Foundation released video of an underwater volcano eruption. This eruption is the deepest erupting volcano ever discovered and recorded. The video of this eruption is more than awesome, it is spectacular. In an area near Fiji, Tonga and Samoa, the West Mata volcano was discovered in May. The volcano lies almost 4,000 feet below the surface of the Pacific Ocean. The scientists say they found a type of lava they have never seen erupting from an active volcano before. They also witnessed molten lava flowing across the deep-ocean seafloor for...
  • Campi Flegrei Supervolcano Update; Eventual Evacuations Likely

    02/13/2022 7:49:49 AM PST · by SunkenCiv · 23 replies
    YouTube ^ | February 11, 2022 | GeologyHub
    In Italy, the supervolcano known as Campi Flegrei to the west of Naples is at a yellow alert level as it is undergoing heightened levels of unrest. Hundreds of earthquakes are occurring every month, but more importantly a dangerous threshold is about to be reached. If ground uplift continues at its present rate, it will surpass the level reached in 1984 which led to the evacuation of 40,000 residents. This video will describe what is occurring at this volcano and why an evacuation might be needed later in the year.0:00 Campi Flegrei Unrest0:25 Signs of Unrest1:10 A Dangerous Threshold1:25 Previous...
  • Mount Etna Volcano Eruption Update; 1 Kilometer High Lava Fountains, Pyroclastic Flows

    02/13/2022 7:40:53 AM PST · by SunkenCiv · 13 replies
    YouTube ^ | February 12, 2022 | GeologyHub
    The Mount Etna volcano started a new eruption on February 10th, 2022. Over the span of several minutes, a large explosive eruption at the southeast crater occurred, creating pyroclastic flows which traveled several kilometers alongside producing several thousand foot tall fountains of lava. However, the eruption is not over, and larger explosions could occur in the next several days to weeks. This video will cover what might happen next and state the series of events which led to this explosive eruption.0:00 Mount Etna Erupts0:53 Geologic Context1:04 Where the Eruption Occurred1:20 A Paroxysm2:16 Relation to "Star Wars"3:24 What will happen nextMount...
  • Mysterious Footprints Suggest Neanderthals Climbed a Volcano Right After It Erupted

    01/04/2022 7:21:45 AM PST · by Red Badger · 40 replies
    https://www.sciencealert.com ^ | January 4, 2022 | MIKE MCRAE
    Footprints on the Ciampate del Diavolo. (edmondo gnerre/Wikimedia Commons/CC BY 2.0) ============================================================================================= According to legend, the devil once took a walk down the side of a volcano in southern Italy, each step preserved forever in solid rock. The tracks are known as the "Ciampate del Diavolo"' or "Devil's Trail" – but details published in 2020 reveal a less diabolical yet far more interesting story on how they came to be. The mysterious footprints are well known to those living near Roccamonfina, an extinct volcano in southern Italy that hasn't erupted in tens of thousands of years. Since 2001, researchers have...
  • Enormous Underwater Volcanic Eruption Creates Waves of Pumice Off Japan

    10/29/2021 2:49:49 AM PDT · by blueplum · 18 replies
    Newsweek ^ | 28 October 2021 | HANNAH OSBORNE
    The biggest underwater volcanic eruption Japan has seen since the end of WWII has left shores covered in pumice stone. In one video, stones are seen covering the waves, while images show fishing ports inundated with volcanic rock. The volcano, Fukutoku-Okanoba, is situated on the Ogasawara island chain, about 800 miles from Tokyo. It sits about 25 meters below the surface of the sea.... ...Huge quantities of pumice stone ejected from the volcano have now started washing up along coastlines in the Okinawa Prefecture....
  • Deepest earthquake ever detected struck 467 miles beneath Japan

    10/25/2021 4:12:47 PM PDT · by BenLurkin · 29 replies
    National Geographic ^ | OCTOBER 25, 2021 | MAYA WEI-HAAS
    The first jolt, which struck off the coasts of Japan’s remote Bonin Islands, was recorded at magnitude 7.9 and up to 680 kilometers (423 miles) underground, making it one of the deepest quakes of its size. Then another oddity emerged in the cascade of aftershocks that followed: a tiny temblor that, if confirmed, would be the deepest earthquake ever detected. The ultradeep quake, described recently in the journal Geology, is estimated to have struck some 751 kilometers (467 miles) beneath the surface in the layer of our planet known as the lower mantle, where scientists have long thought earthquakes unlikely,...
  • Video: Volcano erupts in southern Japan, sending massive smoke column into sky

    10/20/2021 6:40:39 PM PDT · by BenLurkin · 17 replies
    KABC ^ | October 20, 2021 12:48PM
    The Japan Meteorological Agency raised the warning level for Mount Aso to three on a scale of five, warning hikers and residents to avoid the mountain. The smoke rose as high as 3.5 kilometers (11,480 feet) above the crater, with pyroclastic flow pouring out 1.3 kilometers (0.8 mile) down the western slope of the mountain, the agency said. The explosion blew off volcanic rocks as far as 900 meters (2,950 feet) from the crater and ashfalls were detected in several towns in the Kumamoto and neighboring Miyazaki prefectures.
  • Volcano in southern Japan erupts with massive smoke column

    10/20/2021 12:33:25 AM PDT · by blueplum · 23 replies
    AP ^ | 19 October 2021 | uncredited
    TOKYO (AP) — A volcano in southern Japan erupted Wednesday with a massive column of gray smoke billowing into the sky. The Japan Meteorological Agency raised the warning level for Mount Aso to three on a scale of five, warning hikers and residents to avoid the mountain....
  • Shocking Images Show Ash-Covered Ghost Towns On Spain’s Canary Islands (Volcano)

    12/05/2021 6:54:00 AM PST · by blam · 52 replies
    Nation & State ^ | 12-5-2021
    The eruption of the Cumbre Vieja volcano on the Spanish island of La Palma, located off the northwestern coast of Africa, has been erupting for nearly eleven weeks with no signs of abating. Soon the eruption could be La Palma’s longest in over 500 years. The Cumbre Vieja volcano erupted on Sept. 19 and led to the evacuation of thousands of residents. For the last 75 days, the volcano has spewed lava out of fissures, unleashed plumes of ash and toxic gasses, and acid rain. After two and a half months of non-stop volcanic eruptions, some parts of the island...
  • Thousands flee as Indonesia's Mount Semeru volcano erupts

    12/04/2021 6:52:46 AM PST · by janetjanet998 · 40 replies
    Jakarta, Indonesia (CNN)Mount Semeru, a volcano on Indonesia's East Java Province, erupted on Saturday, spewing a column of smoke and ash while displacing thousands from the area, authorities said. The eruption has killed at least one person and wounded 41 others, Indah Masdar, deputy head of Lumajang District, said in a press conference held in Jakarta. Budi Santosa, Head of Disaster Management of East Java Province, said earlier on Saturday that two sub districts had been "badly affected" by the volcano's eruption.
  • Iceland's journey to the centre of the Earth

    11/26/2021 6:23:25 AM PST · by DUMBGRUNT · 17 replies
    France 24 ^ | 26 Nov 2021
    Here, in the country's northeast, a team of international researchers is preparing to drill two kilometres (1.2 miles) into the heart of the volcano, a Jules Verne-like project aimed at creating the world's first underground magma observatory. Unlike the lava spewed above ground, the molten rock beneath the surface remains a mystery. "We have never observed underground magma, apart from fortuitous encounters while drilling" in volcanoes in Hawaii and Kenya, and at Krafla in 2009, he says. "Knowing where the magma is located... is vital" in order to be prepared for an eruption. "Without that, we are nearly blind," says...
  • Long Valley Supervolcano: World's Most Dangerous Volcano Shows Signs of 'Imminent Eruption'

    11/24/2021 10:49:17 AM PST · by BenLurkin · 75 replies
    nature world news ^ | Nov 24, 2021 06:25 AM EST | Rain Jordan
    The Science Channel investigated a section of the valley and discovered many clouds of smoke pouring from beneath the ground. Using InSAR data that has been monitoring the region for the last 20 years, geophysicist Jared Peacock pointed out a worrying aspect of the caldera that might portend problems. InSAR is a remote sensing method that employs a laser to concentrate a beam of radiation on a target, bouncing back to a sensor on an antenna, providing a comprehensive map of a region. One of the most concerning sites in InSAR was near Mammoth Lakes, a hamlet in the Sierra...
  • Residents evacuated from Italian island Vulcano over carbon dioxide levels

    11/21/2021 8:26:15 PM PST · by blueplum · 22 replies
    CNN ^ | 21 November 2021 | Barbie Latza Nadeau, CNN
    (CNN)Most of the 250 permanent residents of a volcanic Italian island have been told to evacuate after levels of carbon dioxide in the air spiked dangerously, causing respiratory problems to people and their pets. Carbon dioxide levels around the volcanic island of Vulcano in the Aeolian archipelago off the north coast of Sicily have risen from 80 tons to 480 tons, effectively reducing the amount of oxygen in the air, according to the Italian National Institute for Geophysics and Volcanology (INGV).... ...In a message on the Lipari Comune's Facebook page, Giorgianni explained Sunday that the evacuation is not because of...
  • Astronomy Picture of the Day - Light Pillar over Volcanic Etna

    11/15/2021 3:51:03 PM PST · by MtnClimber · 12 replies
    APOD.NASA.gov ^ | 15 Nov, 2021 | Image Credit & Copyright: Giancarlo Tinè
    Explanation: What happening above that volcano? Something very unusual -- a volcanic light pillar. More typically, light pillars are caused by sunlight and so appear as a bright column that extends upward above a rising or setting Sun. Alternatively, other light pillars -- some quite colorful -- have been recorded above street and house lights. This light pillar, though, was illuminated by the red light emitted by the glowing magma of an erupting volcano. The volcano is Italy's Mount Etna, and the featured image was captured with a single shot a few hours after sunset in mid-June. Freezing temperatures above...
  • La Palma: Seismic activity is picking up again with two M5.0 earthquakes within 24 hours and record ash emission! Houses and even cemeteries are buried under meters of volcanic ash

    11/03/2021 11:08:28 AM PDT · by Roman_War_Criminal · 28 replies
    SS ^ | 10/31/21 | SS
    Here some bad news about the ongoing eruption on La Palma. The volcano is spewing record amounts of ash while two M5.0 earthquakes hit the island within 24 hours. More ash According to specialists from the Canary Islands Volcanic Emergency Plan (Pevolca), the volcano has started emitting much more volatile material in recent hours. “We are currently facing record amount of ash. The amount of ash that is falling on the western part of the island is the largest since the beginning of the eruption.” Particules smaller than 10 micrometers are excessive: 499 µg / m³ compared to 50 µg...
  • Etna volcano (Italy): violent eruptive episode, parts of SE crater collapse into dangerous pyroclastic flows

    10/23/2021 3:16:03 PM PDT · by BenLurkin · 26 replies
    volcanodiscovery.com ^ | Sat, 23 Oct 2021, 10:52
    As suspected already last night by the presence of intermittent strombolian activity and the slowly rising tremor, this activity continued to evolve gradually throughout the night and early this morning. Tremor reached high levels at 7.40 a.m., followed by a strong increase of explosive activity at the SE crater from 10.15 a.m. Lava fountaining was observed to have started at around that time, and lasted until 12.20 p.m. It generated a dense ash plume that rose several kilometers and drifted east, producing ash falls in the area of Piedimonte and Linguaglossa.
  • Evidence of people on the Azores archipelago 700 years earlier than thought

    10/12/2021 3:04:15 PM PDT · by SunkenCiv · 15 replies
    Phys.org ^ | October 5, 2021 | Bob Yirka
    An international team of researchers has found evidence that people lived on islands in the Azores archipelago approximately 700 years earlier than prior evidence has shown. In their paper, published in Proceedings of the National Academy of Sciences, the group describes their study of sediment cores taken from lakes on some of the islands in the archipelago.Due to the absence of other evidence, historians have believed that people first arrived in the Azores in 1427, when Portuguese sailor Diogo de Silves landed on Santa Maria Island. Soon thereafter, others from Portugal arrived and made the archipelago their home. In this...
  • Gruesome mountain of human bones and carcasses found in hyenas' lava tube cave

    10/05/2021 9:13:21 PM PDT · by blueplum · 30 replies
    Daily Star uk ^ | 05 October 2021 | Kurt Robson
    A mountain of human remains and animal carcases have been found in Saudi Arabia's Umm Jirsan, a vast underground tunnel that spreads for more than than 40 miles created by a river of lava ...Researchers found the gruesome mountain in Saudi Arabia's Umm Jirsan lava tube, which is thought to be the longest network of its kind in the country, measuring 4,900 feet long and around 26 to 29 feet. The "extremely dense accumulation of bones" was found on the lava tube's western passage...
  • Over 115 earthquakes recorded in the south of La Palma – Something really scary is brewing! Its the location where a landslide could trigger a devastating tsunami

    10/05/2021 5:13:41 AM PDT · by Roman_War_Criminal · 116 replies
    SS ^ | 10/4/21 | SS
    Seismic activity is slowly moving towards the southern part of La Palma. This is where a giant landslide could trigger a devastating tsunami. Within the last 2 days, more than 115 earthquakes have been located in the southern area of ​​the island of La Palma. Twelve of them were felt by the population and even four reaching an intensity III-IV in the epicentral zones. The largest earthquake, a M3.7, occurred at 19:14 UTC yesterday evening. Something big is brewing! This guy even suggests a new volcano could soon start erupting on the southern part of the island… Terrifying, no? As...