• MODIS Pic of the Day 06 October 2022

    From Dan Richter@1:317/3 to All on Thu Oct 6 12:00:44 2022
    October 6, 2022 - Smoke and Ash from Nishino-shima Volcanic Island

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    A long ash-laden plume and a large red hot spot marked the explosive
    eruption of Japan’s Nishino-shima volcano in early October 2022. The
    Moderate Resolution Imaging Spectroradiometer (MODIS) on board NASA’s
    Aqua satellite acquired a true-color image of the scene on October 4.
    The red hot spot marks an area where the thermal bands on the
    instrument detected high temperatures. In this case, this is likely due
    to a large flow of lava from the volcano.

    This eruption of Nishino-shima began on October 1 and has continued
    through October 5. According to the Smithsonian Institution Global
    Volcanism Program, an eruption produced an ash plume which rose 1.8-2.6
    km (6,000-8,500 feet) above sea level and drifted both to the east and
    to the west. Dense ash eruptions have caused aviation warnings near the
    area, but the island is uninhabited so other risks to people remain
    small.

    Nishino-shima volcano appears to occupy a tiny island, but it really is
    the tip of a large submerged volcano. Measuring only about one-half
    mile (700 meters) wide, on maps the island appears as a tiny dot about
    1,000 km (620 miles) south and slightly east of Tokyo in the Ogasawara
    Islands. The volcano’s eruptions typically produce large amounts of ash
    as well as large flows of lava. In fact, the repeated, underwater
    eruptions with free-flowing lava have created the island—and are
    expanding its size. Scientists have estimated that in the last large
    eruptive episode, which occurred in 2020, Nishino-shima produced lava
    flows of 1,000,000 cubic meters (35,314,667 cubic feet) a day.

    Image Facts
    Satellite: Aqua
    Date Acquired: 10/4/2022
    Resolutions: 1km (797.3 KB), 500m (2.6 MB),
    Bands Used: 1,4,3
    Image Credit: MODIS Land Rapid Response Team, NASA GSFC



    https://modis.gsfc.nasa.gov/gallery/individual.php?db_date=2022-10-06

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