Submarine Volcano NNE of Iriomotejima

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  • Country
  • Subregion Name
  • Primary Volcano Type
  • Last Known Eruption
  • 24.57°N
  • 123.93°E

  • -200 m
    -656 ft

  • 282010
  • Latitude
  • Longitude

  • Summit

  • Volcano

There are no activity reports for Submarine Volcano NNE of Iriomotejima.

 Available Weekly Reports

There are no Weekly Reports available for Submarine Volcano NNE of Iriomotejima.

Summary of eruption dates and Volcanic Explosivity Indices (VEI).

Start Date Stop Date Eruption Certainty VEI Evidence Activity Area or Unit
1924 Oct 31 Unknown Confirmed 4 Historical Observations

The following references are the sources used for data regarding this volcano. References are linked directly to our volcano data file. Discussion of another volcano or eruption (sometimes far from the one that is the subject of the manuscript) may produce a citation that is not at all apparent from the title. Additional discussion of data sources can be found under Volcano Data Criteria.

Chen C H, Shen J J-S, 2005. A refined historical record of volcanic eruptions around Taiwan: tectonic implications in the arc-continent collision area. Terrestrial, Atmosph, Oceanic Sci, 16: 331-343.

Japan Meteorological Agency, 2013. National Catalogue of the Active Volcanoes in Japan (fourth edition, English version). Japan Meteorological Agency.

Japan Meteorological Agency, 1975. National Catalogue of the Active Volcanoes in Japan. Tokyo: Japan Meteorological Agency, 119 p (in Japanese).

Japan Meteorological Agency, 1996. National Catalogue of the Active Volcanoes in Japan (second edition). Tokyo: Japan Meteorological Agency, 502 p (in Japanese).

Kato Y, 1982. Position and amount of erupted pumice from the Iriomote submarine volcano, Ryukyu Islands. Ryukyu Is Geol Studies, 6: 41-47.

Kuno H, 1962. Japan, Taiwan and Marianas. Catalog of Active Volcanoes of the World and Solfatara Fields, Rome: IAVCEI, 11: 1-332.

Nakano S, Yamamoto T, Iwaya T, Itoh J, Takada A, 2001-. Quaternary Volcanoes of Japan. Geol Surv Japan, AIST,

The southernmost Ryukyu Islands volcano is a shallow submarine volcano NNE of Iriomote-jima island. It is located 20 km NNE of Iriomotejima and 35 km WSW of the northern tip of the island of Ishigakishima in an area with an estimated depth of 200-300 m. A major submarine eruption took place on 31 October 1924. It produced rhyolitic pumice rafts with an estimated volume of about 1 cu km that were carried by currents along both coasts of Japan as far north as Hokkaido. The largest pumice blocks exceeded 1 x 2 m in size, and the volume of ejecta places this poorly known eruption among the largest in historical time in Japan.