Data from the Global Volcanism Program of the Smithsonian Institution
Details for: Niijima
Stratified phreatomagmatic deposits are exposed along a cliff on the eastern coast of Nii-jima, with flat-topped Miyazuka-yama lava dome in the background. The 11-km-long, elongated island is comprised of eight low rhyolitic lava domes that are clustered in two groups at the northern and southern ends of the island, separated by a low, flat isthmus. The Mukai-yama complex at the southern end of the island and Achi-yama lava dome at the northern end were formed during Nii-jima's only historical eruptions in the 9th century CE. Photo by Ichio Moriya (Kanazawa University).
Volcano Number:284020
Volcano Name:Niijima
Volcano Type:Lava dome(s)
Last Eruption:886 CE
Tectonic Setting:Subduction zone / Oceanic crust (< 15 km)
Pop. within 5km:3060
Pop. within 10km:3349
Pop. within 30km:6139
Pop. within 100km:1347661

Eruption Data from the Global Volcanism Program of the Smithsonian Institution
Volcano Number Volcano Name Eruption Number Activity Type Explosivity Index Max Explosivity Index Modifier Activity Area Activity Unit Start Evidence Method Start Date End Date
284020 Niijima 18245 Confirmed Eruption Tephrochronology -5950
284020 Niijima 18246 Confirmed Eruption Niijima-yama Tephrochronology -4350
284020 Niijima 18247 Confirmed Eruption Wakago tephra Tephrochronology -1250
284020 Niijima 18248 Confirmed Eruption 2 Achi-yama Historical Observations 856 857
284020 Niijima 18249 Confirmed Eruption 4 + Mukai-yama Historical Observations 886/6/29
Emissions Data from the Global Volcanism Program of the Smithsonian Institution
Sorry. No emissions data found for this volcano.

Data from the Earthchem Library
Title Author Release Date DOI Link
Melt Inclusion data from the Marianas and Izu volcanic arcs, and Mariana Trough back-arc basin Hauri, Erik 2021-06-29 10.26022/IEDA/112036 Details
Global overview of pre-eruptive magma chamber conditions Popa, Razvan-Gabriel 2021-07-30 10.26022/IEDA/112061 Details
Data from the Earthchem Portal

Data from the SESAR Database

Data from the MaGa Database
Error. The MaGa Web Services ( are down.