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  • Country
  • Volcanic Region
  • Primary Volcano Type
  • Last Known Eruption
  • 29.461°N
  • 129.597°E

  • 584 m
    1916 ft

  • 282022
  • Latitude
  • Longitude

  • Summit

  • Volcano

The Global Volcanism Program has no activity reports for Akuseki-jima.

The Global Volcanism Program has no Weekly Reports available for Akuseki-jima.

The Global Volcanism Program has no Bulletin Reports available for Akuseki-jima.

Basic Data

Volcano Number

Last Known Eruption



Unknown - Evidence Uncertain

584 m / 1916 ft


Volcano Types

Lava dome

Rock Types

Andesite / Basaltic Andesite

Tectonic Setting

Subduction zone
Oceanic crust (< 15 km)


Within 5 km
Within 10 km
Within 30 km
Within 100 km

Geological Summary

Akuseki-jima is a small, 584-m-high stratovolcano in the southern Ryukyu Islands that rises about 800 above the sea floor. Most of the island is surrounded by steep cliffs, and beaches are found only on the SW and SE sides. The andesitic-dacitic volcano consists of two older somma volcanoes, Biro-yama and Naka-dake. Mi-take lava dome forms the high point of the small 2.5 x 3.2 km wide island. The dacitic Omune lava flow on the NE flank was Potassium-Argon dated at <80,000 yrs Before Present, and its youthful morphology and lack of overlying tephra layers suggests it could be as young as the Holocene (Furuyama et al., 2002). The lava flow, the youngest product of Akuseki-jima volcano, forms a low-angle plateau overlying cliffs forming the northern coast.


The following references have all been used during the compilation of data for this volcano, it is not a comprehensive bibliography.

Furuyama K, Daishi M, Nagao K, Eguchi M, 2002. The discovery of young dacite lava in Akuseki-jima Island, Tokara Islands, Japan. Bull Volc Soc Japan (Kazan), 47: 751-755.

IAVCEI, 1973-80. Post-Miocene Volcanoes of the World. IAVCEI Data Sheets, Rome: Internatl Assoc Volc Chemistry Earth's Interior..

Japan Association Quaternary Research, 1987. Quaternary Maps of Japan: Landforms, Geology, and Tectonics. Tokyo: Univ Tokyo Press.

Nakano S, Yamamoto T, Iwaya T, Itoh J, Takada A, 2001-. Quaternary Volcanoes of Japan. Geol Surv Japan, AIST, http://www.aist.go.jp/RIODB/strata/VOL_JP/.

The Global Volcanism Program is not aware of any Holocene eruptions from Akuseki-jima. If this volcano has had large eruptions (VEI >= 4) prior to 10,000 years ago, information might be found on the Akuseki-jima page in the LaMEVE (Large Magnitude Explosive Volcanic Eruptions) database, a part of the Volcano Global Risk Identification and Analysis Project (VOGRIPA).

This compilation of synonyms and subsidiary features may not be comprehensive. Features are organized into four major categories: Cones, Craters, Domes, and Thermal Features. Synonyms of features appear indented below the primary name. In some cases additional feature type, elevation, or location details are provided.


Feature Name Feature Type Elevation Latitude Longitude
Biro-yama Stratovolcano 29° 27' 0" N 129° 37' 0" E
Naka-dake Stratovolcano 29° 27' 30" N 129° 36' 30" E


Feature Name Feature Type Elevation Latitude Longitude
Dome 584 m 29° 27' 41" N 129° 35' 49" E

Photo Gallery

The island of Akuseki-jima is seen in an aerial perspective from the SW looking along the Ryukyu Island chain in this computer-generated graphic image. The high point of the island is 586-m-high Mitake (left). Suwanose-jima is the next volcano to the NE, and Nakano-shima lies on the far right horizon.

Photo courtesy of Bird's-Eye Japan (http://www.medianetjapan.com/2/town/internet_computer/birds/).
Akuseki-jima is seen from the north with the Omune lava flow forming a plateau in the foreground. The dacitic lava flow, the youngest product of the volcano, has a youthful morphology and lacks overlying tephra layers, suggesting a young age. Akuseki-jima is a small, 584-m-high stratovolcano in the southern Ryukyu Islands that consists of two older somma volcanoes, Biro-yama and Naka-dake. Mi-take lava dome (right) forms the high point of the small 2.5 x 3.2 km wide island.

Copyrighted photo by Shun Nakano, 2004 (Japanese Quaternary Volcanoes database, RIODB, http://riodb02.ibase.aist.go.jp/strata/VOL_JP/EN/index.htm and Geol Surv Japan, AIST, http://www.gsj.jp/).

Smithsonian Sample Collections Database

There are no samples for Akuseki-jima in the Smithsonian's NMNH Department of Mineral Sciences Rock and Ore collection.

Affiliated Sites

Large Eruptions of Akuseki-jima Information about large Quaternary eruptions (VEI >= 4) is cataloged in the Large Magnitude Explosive Volcanic Eruptions (LaMEVE) database of the Volcano Global Risk Identification and Analysis Project (VOGRIPA).
WOVOdat WOVOdat is a database of volcanic unrest; instrumentally and visually recorded changes in seismicity, ground deformation, gas emission, and other parameters from their normal baselines. It is sponsored by the World Organization of Volcano Observatories (WOVO) and presently hosted at the Earth Observatory of Singapore.
EarthChem EarthChem develops and maintains databases, software, and services that support the preservation, discovery, access and analysis of geochemical data, and facilitate their integration with the broad array of other available earth science parameters. EarthChem is operated by a joint team of disciplinary scientists, data scientists, data managers and information technology developers who are part of the NSF-funded data facility Integrated Earth Data Applications (IEDA). IEDA is a collaborative effort of EarthChem and the Marine Geoscience Data System (MGDS).
MODVOLC - HIGP MODIS Thermal Alert System Using infrared satellite Moderate Resolution Imaging Spectroradiometer (MODIS) data, scientists at the Hawai'i Institute of Geophysics and Planetology, University of Hawai'i, developed an automated system called MODVOLC to map thermal hot-spots in near real time. For each MODIS image, the algorithm automatically scans each 1 km pixel within it to check for high-temperature hot-spots. When one is found the date, time, location, and intensity are recorded. MODIS looks at every square km of the Earth every 48 hours, once during the day and once during the night, and the presence of two MODIS sensors in space allows at least four hot-spot observations every two days. Each day updated global maps are compiled to display the locations of all hot spots detected in the previous 24 hours. There is a drop-down list with volcano names which allow users to 'zoom-in' and examine the distribution of hot-spots at a variety of spatial scales.
MIROVA Middle InfraRed Observation of Volcanic Activity (MIROVA) is a near real time volcanic hot-spot detection system based on the analysis of MODIS (Moderate Resolution Imaging Spectroradiometer) data. In particular, MIROVA uses the Middle InfraRed Radiation (MIR), measured over target volcanoes, in order to detect, locate and measure the heat radiation sourced from volcanic activity.