Nishinoshima erupts ash up to 8 300 m (27 230 feet) a.s.l. – highest since 2013, Japan


A column of volcanic ash produced by Japanese Nishinoshima volcano rose up to 8 300 m (27 230 feet) above the sea level on July 4, 2020– its highest since 2013, the Japan Meteorological Agency (JMA) confirmed on July 6.

Volcanic activity at the volcano surged in June 2020, with frequent explosions and lava flows.

When the Japan Coast Guard (JCG) observed the erupting volcano on June 29, dark smoke was reaching at least 3 400 m (11 155 feet) above the summit, and the volcano's central crater had expanded in a south-westerly direction. Lava flowed down the southwest coast and into the sea.



Nishinoshima on June 29. Image credit: JCG

The images below were captured on July 4 and 5:


20200705  NIKON D750 Ai-s NIKKOR 300mm F4.5 ED ISO3600 1.6sec F5.6 火山雷getです はるか130km先の地球のスペクタルを映像に残せることに感謝です。 インターバル撮影で400枚撮影した中にたった1枚火山雷が映っていました。 友人に火山雷の存在を教えていただき、狙ってみました。 友人にも感謝です。 マジックアワーの後に映える噴煙も格別です。 「火山雷」 火山噴火によってもたらされる雷のことである。この雷は、火山という条件上とても近づきにくい条件で発生するため、詳しい諸量の観測はしにくい。 ウィキペディアより ・ ・ ・ #小笠原諸島 #小笠原 #ogasawara #ogasawalove #boninislands #hahajima #母島 #新夕日ヶ丘 #西之島 #西之島噴火 #火山雷 #nikond750 #nikond750photography #世界自然遺産 #worldnaturalheritagesite #長寿と繁栄を #livelongandprosper

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The formation of lava flows and explosions are expected to continue as the activity at the volcano remains high.


Nishinoshima volcano on July 6. Image credit: Copernicus EU/Sentinel-3


Nishinoshima volcano on July 6. Image credit: Pierre Markuse, Copernicus EU/Sentinel-3

Geological summary

The small island of Nishinoshima was enlarged when several new islands coalesced during an eruption in 1973-74. Another eruption that began offshore in 2013 completely covered the previously exposed surface and enlarged the island again. Water discoloration has been observed on several occasions since.

The island is the summit of a massive submarine volcano that has prominent satellitic peaks to the S, W, and NE. The summit of the southern cone rises to within 214 m (702 feet) of the sea surface 9 km (5.6 miles) SSE. (GVP)

Featured image: Ash rising from Nishinoshima volcano on July 6, 2020. Credit: NOAA-20 (JPSS-1)


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