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Report on Kuchinoerabujima (Japan) — 30 June-6 July 2021


Kuchinoerabujima

Smithsonian / US Geological Survey Weekly Volcanic Activity Report,
30 June-6 July 2021
Managing Editor: Sally Kuhn Sennert

Please cite this report as:

Global Volcanism Program, 2021. Report on Kuchinoerabujima (Japan). In: Sennert, S K (ed.), Weekly Volcanic Activity Report, 30 June-6 July 2021. Smithsonian Institution and US Geological Survey.

Weekly Report (30 June-6 July 2021)

Kuchinoerabujima

Japan

30.443°N, 130.217°E; summit elev. 657 m

All times are local (unless otherwise noted)


JMA reported that deformation data at Kuchinoerabujima had shown a deflationary trend since February and the number of volcanic earthquakes had been decreasing since May. The Alert Level was lowered to 2 (on a scale of 1-5) on 5 July, and JMA reminded the public to stay 1 km away from Shindake Crater in general and 2 km away from the W flank.

Geological Summary. A group of young stratovolcanoes forms the eastern end of the irregularly shaped island of Kuchinoerabujima in the northern Ryukyu Islands, 15 km W of Yakushima. The Furudake, Shindake, and Noikeyama cones were erupted from south to north, respectively, forming a composite cone with multiple craters. All historical eruptions have occurred from Shindake, although a lava flow from the S flank of Furudake that reached the coast has a very fresh morphology. Frequent explosive eruptions have taken place from Shindake since 1840; the largest of these was in December 1933. Several villages on the 4 x 12 km island are located within a few kilometers of the active crater and have suffered damage from eruptions.

Source: Japan Meteorological Agency (JMA)