Report on Kuchinoerabujima (Japan) — 25 May-31 May 2022
Smithsonian Institution / US Geological Survey
Weekly Volcanic Activity Report, 25 May-31 May 2022
Managing Editor: Sally Sennert.
Please cite this report as:
Global Volcanism Program, 2022. Report on Kuchinoerabujima (Japan) (Sennert, S, ed.). Weekly Volcanic Activity Report, 25 May-31 May 2022. Smithsonian Institution and US Geological Survey.
30.443°N, 130.217°E; summit elev. 657 m
All times are local (unless otherwise noted)
JMA lowered the Alert Level for Kuchinoerabujima to 1 (on a scale of 1-5) on 25 May, noting that the number of volcanic earthquakes had decreased to low levels. The report noted that sulfur dioxide emissions had continued to remain low, and that no changes in temperature or the extent of the geothermal areas around the crater were observed.
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.