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Thread: East Carib volcanos firing up - La Soufriere

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    East Carib volcanos firing up - La Soufriere

    Eastern Caribbean issues rare alerts for rumbling volcanoes. Volcanoes that have been quiet for decades are rumbling to life in the eastern Caribbean, prompting officials to issue alerts in Martinique and St. Vincent and the Grenadines as scientists rush in to study activity they say hasn’t been observed in years. The most recent warning was issued late Tuesday for La Soufriere volcano in St. Vincent and the Grenadines, a chain of islands home to more than 100,000 people. Officials reported tremors, strong gas emissions, formation of a new volcanic dome and changes to its crater lake.

    https://apnews.com/article/science-s...7038ab0831ac2e
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    Well, 2020 still has about 14 hours left...

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    News on La Soufriere on St. Vincent. (scroll down)

    https://volcano.si.edu/reports_weekly.cfm#vn_360150
    Last edited by Roger E. Moore; 2020-Dec-31 at 08:15 PM.
    Do good work. —Virgil Ivan "Gus" Grissom

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    St. Vincent residents advised to evacuate after La Soufriere volcano spews ash. The government raised the alert level to orange for the volcano La Soufriere, indicating that it could erupt within 24 hours, and recommended people who live nearby should leave their homes immediately.

    https://www.reuters.com/article/us-c...-idUSKBN2951N3
    Do good work. —Virgil Ivan "Gus" Grissom

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    Wikipedia article on La Soufriere, with map and history.

    https://en.wikipedia.org/wiki/La_Sou...A8re_(volcano)

    Location of Saint Vincent island:

    https://en.wikipedia.org/wiki/Saint_..._centered).svg

    New magma dome:

    https://www.iwnsvg.com/2020/12/29/al...o-oozes-magma/
    Last edited by Roger E. Moore; 2020-Dec-31 at 08:17 PM.
    Do good work. —Virgil Ivan "Gus" Grissom

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    That was where pyroclastic flows picked up the name “Nuee Ardante” was it not?

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    I think that was Mont Pelée.
    The greatest journey of all time, for all to see
    Every mission makes our dreams reality
    And our destiny begins with you and me
    Through all space and time, the achievement of mankind
    As we sail the sea of discovery, on heroes’ wings we fly!

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    Quote Originally Posted by KaiYeves View Post
    I think that was Mont Pelée.
    It was indeed Mount Pelee.

    https://www.usgs.gov/news/earthword-...C3%A9e-ardente
    Do good work. —Virgil Ivan "Gus" Grissom

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    That’s right. Maybe I was thinking Violins of St. Jacque’s or something...

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    Alert Level raised at SVG’s La Soufriere volcano: CDEMA, Caribbean Disaster Emergency Management Agency – The alert level for St. Vincent and the Grenadines’ La Soufriere volcano has been elevated to Orange – the third highest of four levels – because of increased activity at the site. Monitoring systems, satellite imagery and visual observations have confirmed increased seismic and fumarolic activity, strong gas emissions, emergence of a satellite dome on the South-East of the existing volcanic dome and changes to the crater lake. An effusive eruption within the crater, with visible gas and steam, was also observed on 29 December 2020.

    https://reliefweb.int/report/saint-v...friere-volcano

    (Article also includes link to download PDF showing Saint Vincent and danger levels on island.)
    https://reliefweb.int/sites/reliefwe...%20CARICOM.pdf
    Do good work. —Virgil Ivan "Gus" Grissom

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    More scientists to monitor erupting La Soufrière volcano in St Vincent. Two scientists from the Seismic Research Centre, Thomas Christopher and Adam Stinton, who are based at the Montserrat Volcano Observatory, will this week join the team from the centre that has been monitoring the La Soufrière volcano as it continues to erupt effusively. They are expected to gather data from the dome and crater through temperature and photogrammetry measurements and gas measurements using a MultiGAS and spectrometer, the National Emergency Management Organisation (NEMO) said. The team is led by Vincentian geologist Professor Richard Robertson from came from the seismic research centre at the University of the West Indies, St Augustine in Trinidad, where he is based. NEMO said the Caribbean Disaster Emergency Management Agency (CDEMA) is finalising helicopter support for the team to install equipment and collect samples from the summit of the volcano. The dome that broke through the crater floor on December 27, 2020, on the south-west perimeter of the existing dome, continues to grow within the crater of La Soufrière and has an ellipsoid shape with growth expanding in a westerly direction.

    http://jamaica-gleaner.com/article/c...ano-st-vincent
    Do good work. —Virgil Ivan "Gus" Grissom

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    Soufrière St. Vincent volcano (West Indies, St. Vincent): lava dome continues to grow. The actively extruded lava dome area located on the edge of the old lava dome from 1979 continues to grow and is higher and bigger than reported in the last update. It continues to grow laterally towards the east and west. Thermal images were taken to determine the distribution of heat on the new dome, however conditions and visibility were limited due to dense clouds and not suitable for temperature measuring. The scientists will need to repeat this exercise as the gases coming out of the volcano were moving around and therefore difficult to measure. A plume rising from the lava dome contains sulfur dioxide (SO2) and carbon dioxide (CO2). Carbon dioxide does not have a smell and can be fatal for population.

    https://www.volcanodiscovery.com/sou...s-to-grow.html
    Do good work. —Virgil Ivan "Gus" Grissom

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    Soufrière St. Vincent volcano (West Indies, St. Vincent): field work revealed current temperature at growing lava dome. On 16 January the volcanologists of the University of the West Indies Seismic Research Centre (UWI-SRC) did a rock sampling from the western part of the growing lava dome. During the field sampling a thermal images were taken to measure a current surface temperature approx. 590 °C as hot rising magma pushes its way up to the surface. Glow identified in satellite data suggesting rise of the magma. The aerial survey will be used to create a detailed model of the dome which will help map the growth and volume of the lava dome in the future. The actively extruded lava dome area located on the edge of the old lava dome from 1979 continues to grow in lateral (east to west) direction. The height and volume of the lava dome is unknown and was not reported yet, but from available imagery seems to be 3/4 the height of the 1979 dome. The most active degassing area was observed between the pre-existing 1979 dome and the actively growing dome. An extensive area of burnt vegetation was observed in the western section of the crater floor extending outwards from the dome. Persons living in areas close to the volcano should expect strong sulfur dioxide (SO2) emissions for several days to weeks, depending on changes in wind direction. Neither has an evacuation order been issued yet.

    https://www.volcanodiscovery.com/sou...-at-growi.html
    Do good work. —Virgil Ivan "Gus" Grissom

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    Coincidentally, my wife was talking about post-pandemic vacation spots the other day and was talking about St. Vincent. I said we might want to wait for the volcano to stop erupting (she didn't know anything about that).
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    Quote Originally Posted by Swift View Post
    Coincidentally, my wife was talking about post-pandemic vacation spots the other day and was talking about St. Vincent. I said we might want to wait for the volcano to stop erupting (she didn't know anything about that).
    I thought this thread might prove helpful.
    Do good work. —Virgil Ivan "Gus" Grissom

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    La Soufrière Volcano Continues to Exude Magma on the Surface.

    https://www.thevoiceslu.com/2021/01/...n-the-surface/
    Do good work. —Virgil Ivan "Gus" Grissom

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    La Soufriere volcano: Lava dome gaining height, length. These are the latest estimated dimensions of the new dome as of January 27: Length estimated at 428 m. Width estimated at 217 m. Height estimated at 80 m. Estimated total volume at 4.45 million m^3. The UWI Seismic Research Centre says this information was provided by Dr Stinton of the Montserrat Volcano Observatory.

    https://www.loopnewsbarbados.com/con...eight-length-3
    Do good work. —Virgil Ivan "Gus" Grissom

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    Quote Originally Posted by Roger E. Moore View Post
    St. Vincent and the Grenadines
    And here I thought that was a name of a band. Maybe with the Cookie Monster rocks as an album cover.

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    La Soufriere, Mt. Etna, and Kilauea in the same article, comparing their lava.

    Lava Lakes, Lava Flows, Lava Domes: Lava can take many forms, all based on what is in it. Three volcanoes are currently showcasing different varieties of lava in spectacular fashion.

    https://www.discovermagazine.com/pla...ows-lava-domes
    Do good work. —Virgil Ivan "Gus" Grissom

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    Soufrière St. Vincent volcano (West Indies, St. Vincent): gas measurements confirmed sulfur dioxide emissions; first since Dec 2020. Remaining gas measurements detected the presence of hydrogen chloride (HCl), hydrogen fluoride (HF) and hydrogen sulfide (H2S). The effusive eruption of the volcano continues characterized by the actively growing lava dome. The extruded lava dome is about 93 m tall, 231 m wide and 511 long and had a volume of 5.93 million cubic meters by 1 February reported by the University of the West Indies Seismic Research Centre (UWI-SRC).

    https://www.volcanodiscovery.com/sou...de-emissi.html
    Do good work. —Virgil Ivan "Gus" Grissom

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    Soufrière St. Vincent volcano (West Indies, St. Vincent): activity remains unchanged; growing lava dome continues in lateral direction.

    https://www.volcanodiscovery.com/sou...-dome-con.html
    Do good work. —Virgil Ivan "Gus" Grissom

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    Slight reduction in growth rate of dome, but refrain from visiting Soufriere volcano! – lead scientist

    https://searchlight.vc/searchlight/n...ead-scientist/
    Do good work. —Virgil Ivan "Gus" Grissom

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    Soufrière, St. Vincent volcano (West Indies, St. Vincent): twice length and volume of new lava dome since last update

    https://www.volcanodiscovery.com/sou...e-since-l.html

    QUOTE: The effusive eruption of the volcano continues characterized by the actively growing lava dome. On 19 March the University of the West Indies Seismic Research Centre (UWI-SRC) monitored the volcano by drone to detect of physical changes of the new lava dome. The central active vent continues to feed the growing lava dome in north-west and south-east direction. The extruded lava dome is currently about 105 m tall, 243 m wide and 921 long (511 m on 4 Feb) with a volume of 13.13 million cubic meters (5.93 million cubic meters on 4 Feb). Its length and volume is almost twice since the last update on 4 February.
    Do good work. —Virgil Ivan "Gus" Grissom

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    Eruption entered explosive phase yesterday. Evacuations and etc..

    https://apnews.com/article/la-soufri...2b6b3e37dc2c05

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