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Volcanic eruption

WHAT YOU CAN SEE FROM SATELLITE IMAGE[ERUPTION OF SUBMARINE VOLVCANO]

Submarine volcanic activity near South Iwo Jima

On August 13, 2021, an eruption was confirmed for the first time in 11 years since February 2010 (Fig. 1)* at the submarine volcano "Fukutoku Okanoba" in the south of Iwo Jima and north of South Iwo Jima in the Ogasawara Islands.

kaiteifunka_02_210823.png

Figure 1. Image taken by ALOS AVNIR2 on February 7, 2010*

After the eruption 11 years ago, it was submerged and became a Guyot** with a shallowest water depth of about 25 m. However, an eruption of a submarine volcano was confirmed on August 13.

Fukutoku Okanoba

Figure 2 shows an image of the SPOT satellite taken near Fukutoku-Okanoba. Clouds look white. You can see the yellowish brown and milky white discolored water on the north side of South Iwo Jima.

en_kaiteifunka_03_210825_re.jpg

Figure 2. Fukutoku Okanoba taken with SPOT satellite*** (1.5m resolution; at 9:50 JST on August 18, 2021).

*Source:JAXA
https://www.eorc.jaxa.jp/ALOS/img_up/jdis_av2_fukutoku_100207.htm

**A guiyot is a seamount with a flat top.

***You can order from here!
https://www.satim.co.jp/satellite/spot/spot6-7/

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