Volcanos

Roundup of Global Volcanic Activity – New Activity for the week 20 July – 26 July 2022

Aira – Kyushu (Japan) : A notable eruption at Minamidake Crater (at Aira Caldera’s Sakurajima volcano) occurred on 24 July. The event was preceded by inflation first detected at around 0900 on 18 July. JMA warned residents that the inflation represented an intrusion of magma that could result in a large explosion. Sulfur dioxide emissions were at 1,900 tons per day, measured during a field visit on 22 July. Four eruptive events recorded between 23 July and 1500 on 24 July produced plumes that rose 1.2 km above the crater rim; the events did not change the rate of inflation. A larger eruptive event occurred at 2005 on 24 July that ejected bombs more than 2.4 km E, the first time material fell beyond 2 km from the crater since 4 June 2020. The event produced minor plumes that rose 300 m before mingling with weather clouds. The Alert Level was raised to 5 (the highest level on a 5-level scale) at 2050, signaling that residents should evacuate. According to a news article 51 people in 33 households living within a 3-km radius of both Minamidake and Showa craters left their homes. Ashfall was reported in Kagoshima City (about 10 km W). JMA noted that inflation ceased after the event. On 25 July JMA scientists conducted a field visit and confirmed that bombs were deposited more than 2.4 km from the vent and observed ashfall in an area from Shirahamacho to Kurokamicho. During 25-26 July a few small explosions and eruptive events generated plumes that rose as high as 2.2 km above the crater rim and disappeared into the weather clouds. Deformation had stagnated.

Ebeko – Paramushir Island (Russia) : KVERT reported that moderate activity at Ebeko was ongoing during 14-21 July. According to volcanologists in Severo-Kurilsk (Paramushir Island, about 7 km E) explosions generated ash plumes that rose up to 3.5 km (11,500 ft) a.s.l. and drifted E and S. A thermal anomaly over the volcano was identified in satellite images during 17-18 July.

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