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TOML

Active Volcanoes in Japan - TOML

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 
[[items]]
code = "1"
slug = "shiretoko-iozan"
name = "Shiretoko-Iozan"
description = "An active volcano located on the Shiretoko Peninsula in Hokkaido."
isConstantlyMonitored = false
region = "Hokkaido"

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

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

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

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

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

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

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

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

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

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

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

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

[[items]]
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"

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

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

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

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

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

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

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

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

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

[[items]]
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"

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

[[items]]
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"

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

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

[[items]]
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"

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

[[items]]
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"

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

[[items]]
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"

[[items]]
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"

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

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

[[items]]
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"

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

[[items]]
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"

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

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

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

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

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

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