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INI

Active Volcanoes in Japan - INI

Active volcanoes in Japan are defined as those that have erupted within approximately the last 10,000 years or currently exhibit active fumarolic activity. The Japan Meteorological Agency has designated 111 active volcanoes, of which 50 are under constant 24-hour observation using seismometers, GNSS, tiltmeters, air vibration sensors, and surveillance cameras. These volcanoes are distributed throughout the Japanese archipelago from Hokkaido to the Southwest Islands and Northern Territories, and volcanic alert levels (1-5) are set to support disaster prevention measures.

Japan Meteorological Agency volcano active volcano eruption disaster prevention geology natural disaster 
[item.shiretoko-iozan]
code=1
slug=shiretoko-iozan
name=Shiretoko-Iozan
description=An active volcano located on the Shiretoko Peninsula in Hokkaido.
isConstantlyMonitored=false
region=Hokkaido

[item.rausudake]
code=2
slug=rausudake
name=Rausudake
description=The highest peak on the Shiretoko Peninsula in Hokkaido.
isConstantlyMonitored=false
region=Hokkaido

[item.mashu]
code=3
slug=mashu
name=Mashu
description=An active volcano with the caldera lake Lake Mashu.
isConstantlyMonitored=false
region=Hokkaido

[item.atosanupuri]
code=4
slug=atosanupuri
name=Atosanupuri
description=An active volcano on Nakajima Island in Lake Kussharo, Hokkaido.
isConstantlyMonitored=true
region=Hokkaido

[item.oakandake]
code=5
slug=oakandake
name=Meakandake
description=An active volcano in the Akan region of Hokkaido that erupted in 2006.
isConstantlyMonitored=true
region=Hokkaido

[item.taisetsuzan]
code=6
slug=taisetsuzan
name=Taisetsuzan
description=The largest mountainous area in Hokkaido, an active volcanic group.
isConstantlyMonitored=true
region=Hokkaido

[item.tokachidake]
code=7
slug=tokachidake
name=Tokachidake
description=An active volcano in Hokkaido that erupted in 1989.
isConstantlyMonitored=true
region=Hokkaido

[item.tarumaesan]
code=8
slug=tarumaesan
name=Tarumaesan
description=An active volcano in Hokkaido that erupted in 1981.
isConstantlyMonitored=true
region=Hokkaido

[item.kuttara]
code=9
slug=kuttara
name=Kuttara
description=An active volcano with a caldera in Hokkaido.
isConstantlyMonitored=true
region=Hokkaido

[item.usuzan]
code=10
slug=usuzan
name=Usuzan
description=An active volcano in Hokkaido that erupted in 2000.
isConstantlyMonitored=true
region=Hokkaido

[item.hokkaido-komagatake]
code=11
slug=hokkaido-komagatake
name=Hokkaido-Komagatake
description=An active volcano in Hokkaido with a major eruption in 1640.
isConstantlyMonitored=true
region=Hokkaido

[item.esan]
code=12
slug=esan
name=Esan
description=An active volcano on the Oshima Peninsula in Hokkaido.
isConstantlyMonitored=true
region=Hokkaido

[item.iwakisan]
code=13
slug=iwakisan
name=Iwakisan
description=An active volcano in Aomori Prefecture, also known as Tsugaru-Fuji.
isConstantlyMonitored=true
region=Tohoku

[item.towada]
code=14
slug=towada
name=Towada
description=An active volcano with a caldera lake on the border of Aomori and Akita Prefectures.
isConstantlyMonitored=true
region=Tohoku

[item.akita-yakeyama]
code=15
slug=akita-yakeyama
name=Akita-Yakeyama
description=An active volcano in Akita Prefecture that erupted in 1997.
isConstantlyMonitored=true
region=Tohoku

[item.iwatesan]
code=16
slug=iwatesan
name=Iwatesan
description=The highest peak in Iwate Prefecture, an active volcano.
isConstantlyMonitored=true
region=Tohoku

[item.chokaisan]
code=17
slug=chokaisan
name=Chokaisan
description=An active volcano on the border of Akita and Yamagata Prefectures.
isConstantlyMonitored=true
region=Tohoku

[item.kurikomayama]
code=18
slug=kurikomayama
name=Kurikomayama
description=An active volcano at the tri-border of Miyagi, Akita, and Iwate Prefectures.
isConstantlyMonitored=true
region=Tohoku

[item.zaozan]
code=19
slug=zaozan
name=Zaozan
description=An active volcano on the border of Miyagi and Yamagata Prefectures.
isConstantlyMonitored=true
region=Tohoku

[item.azumayama]
code=20
slug=azumayama
name=Azumayama
description=An active volcano in Fukushima Prefecture that erupted in 2019.
isConstantlyMonitored=true
region=Tohoku

[item.adatarayama]
code=21
slug=adatarayama
name=Adatarayama
description=An active volcano in Fukushima Prefecture.
isConstantlyMonitored=true
region=Tohoku

[item.bandaisan]
code=22
slug=bandaisan
name=Bandaisan
description=An active volcano in Fukushima Prefecture with a major eruption in 1888.
isConstantlyMonitored=true
region=Tohoku

[item.nasudake]
code=23
slug=nasudake
name=Nasudake
description=An active volcano in Tochigi Prefecture that erupted in 1963.
isConstantlyMonitored=true
region=Kanto/Chubu

[item.nikko-shiranesan]
code=24
slug=nikko-shiranesan
name=Nikko-Shiranesan
description=An active volcano on the border of Tochigi and Gunma Prefectures.
isConstantlyMonitored=true
region=Kanto/Chubu

[item.kusatsu-shiranesan]
code=25
slug=kusatsu-shiranesan
name=Kusatsu-Shiranesan
description=An active volcano in Gunma Prefecture that erupted in 2018.
isConstantlyMonitored=true
region=Kanto/Chubu

[item.asamayama]
code=26
slug=asamayama
name=Asamayama
description=An active volcano on the border of Gunma and Nagano Prefectures that erupted in 2019.
isConstantlyMonitored=true
region=Kanto/Chubu

[item.yakedake]
code=27
slug=yakedake
name=Yakedake
description=An active volcano on the border of Nagano and Gifu Prefectures.
isConstantlyMonitored=true
region=Kanto/Chubu

[item.norikuradake]
code=28
slug=norikuradake
name=Norikuradake
description=An active volcano on the border of Nagano and Gifu Prefectures.
isConstantlyMonitored=true
region=Kanto/Chubu

[item.ontakesan]
code=29
slug=ontakesan
name=Ontakesan
description=An active volcano on the border of Nagano and Gifu Prefectures that erupted in 2014.
isConstantlyMonitored=true
region=Kanto/Chubu

[item.hakusan]
code=30
slug=hakusan
name=Hakusan
description=An active volcano on the border of Ishikawa and Gifu Prefectures.
isConstantlyMonitored=true
region=Kanto/Chubu

[item.fujisan]
code=31
slug=fujisan
name=Mount Fuji
description=Japan's highest peak, an active volcano and UNESCO World Heritage Site.
isConstantlyMonitored=true
region=Kanto/Chubu

[item.hakoneyama]
code=32
slug=hakoneyama
name=Hakoneyama
description=An active volcano in Kanagawa Prefecture that erupted in 2015.
isConstantlyMonitored=true
region=Kanto/Chubu

[item.izu-oshiima]
code=33
slug=izu-oshiima
name=Izu-Oshima
description=An active volcano in the Izu Islands, Tokyo, that erupted in 1990.
isConstantlyMonitored=true
region=Izu/Ogasawara

[item.miyakejima]
code=34
slug=miyakejima
name=Miyakejima
description=An active volcano in the Izu Islands, Tokyo, with a major eruption in 2000.
isConstantlyMonitored=true
region=Izu/Ogasawara

[item.nishinoshima]
code=35
slug=nishinoshima
name=Nishinoshima
description=An active volcano in the Ogasawara Islands that erupted in 2023.
isConstantlyMonitored=true
region=Izu/Ogasawara

[item.sanbesan]
code=36
slug=sanbesan
name=Sanbesan
description=An active volcano in Shimane Prefecture.
isConstantlyMonitored=false
region=Chugoku

[item.asosan]
code=37
slug=asosan
name=Asosan
description=An active volcano in Kumamoto Prefecture with one of the world's largest calderas, erupted in 2020.
isConstantlyMonitored=true
region=Kyushu

[item.unzendake]
code=38
slug=unzendake
name=Unzendake
description=An active volcano in Nagasaki Prefecture with a major eruption in 1991.
isConstantlyMonitored=true
region=Kyushu

[item.kirishimayama]
code=39
slug=kirishimayama
name=Kirishimayama
description=An active volcano on the border of Miyazaki and Kagoshima Prefectures that erupted in 2018.
isConstantlyMonitored=true
region=Kyushu

[item.sakurajima]
code=40
slug=sakurajima
name=Sakurajima
description=An active volcano in Kagoshima Prefecture, one of Japan's most active volcanoes.
isConstantlyMonitored=true
region=Kyushu

[item.satsuma-iojima]
code=41
slug=satsuma-iojima
name=Satsuma-Iojima
description=An active volcano in Kagoshima Prefecture that erupted in 2020.
isConstantlyMonitored=true
region=Kyushu

[item.kuchinoerabujima]
code=42
slug=kuchinoerabujima
name=Kuchinoerabujima
description=An active volcano in Kagoshima Prefecture that erupted in 2020.
isConstantlyMonitored=true
region=Kyushu

[item.suwanosejima]
code=43
slug=suwanosejima
name=Suwanosejima
description=An active volcano in Kagoshima Prefecture with frequent eruptions.
isConstantlyMonitored=true
region=Kyushu

[item.kuchinoshima]
code=44
slug=kuchinoshima
name=Kuchinoshima
description=An active volcano in the Tokara Islands, Kagoshima Prefecture.
isConstantlyMonitored=false
region=Kyushu

[item.nakanoshima]
code=45
slug=nakanoshima
name=Nakanoshima
description=An active volcano in the Tokara Islands, Kagoshima Prefecture.
isConstantlyMonitored=false
region=Kyushu