Izu-Oshima Volcano Observatory
346-7 Kuromama, Motomachi, Oshima, Tokyo 100-0101, Japan
OVO was established in 1984, integrating geomagnetic and Tsunami observatories. The aims are 1) research of various volcanic phenomena and the application to prediction of eruption, 2) exploration of underground structure of volcano, 3) clarifying relationship between volcanic activity and tectonics.
Lava lake in the Mihara-yama on November 16, 1986. Courtesy of Osamu Oshima.
Lava fountain at the summit of Mihara-yama (central cone) on November 17, 1986. Courtesy of Osamu Oshima.
Fissure eruption at Izu-Oshima Volcano on November 21, 1986
PHOTO GALLERY OF THE 1986 ERUPTION (LINK SITES)