Ata

Photo of this volcano
  • Country
  • Volcanic Region
  • Primary Volcano Type
  • Last Known Eruption
  • 31.22°N
  • 130.57°E

  • 924 m
    3031 ft

  • 282070
  • Latitude
  • Longitude

  • Summit
    Elevation

  • Volcano
    Number

The Global Volcanism Program has no activity reports for Ata.

The Global Volcanism Program has no Weekly Reports available for Ata.

The Global Volcanism Program has no Bulletin Reports available for Ata.

Eruptive History


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


Start Date Stop Date Eruption Certainty VEI Evidence Activity Area or Unit
[ 1615 Aug 7 (?) ] [ Unknown ] Uncertain     Kaimon
0885 Aug 29 0885 Sep 28 Confirmed 4 Historical Observations Kaimon
[ 0882 Nov ] [ Unknown ] Uncertain 2   Kaimon
0874 Mar 29 0874 Jul (?) Confirmed 4 Historical Observations Kaimon
[ 0866 May ] [ Unknown ] Uncertain 2   Kaimon
[ 0860 Apr ] [ Unknown ] Uncertain 2   Kaimon
0770 (?) Unknown Confirmed 4 Tephrochronology Kaimon, Tephra set Km-beta
0720 (?) Unknown Confirmed 4 Tephrochronology Kaimon, Tephra set Km-gamma
0660 (?) Unknown Confirmed 4 Tephrochronology Kaimon
0600 (?) Unknown Confirmed 4 Tephrochronology Kaimon, Tephra set Km-delta
0550 (?) Unknown Confirmed 2 Tephrochronology Kaimon, Tephra set Km-epsilon
0270 (?) Unknown Confirmed 3 Tephrochronology Kaimon, Tephra set Km-zeta
0150 (?) Unknown Confirmed 4 Tephrochronology Kaimon, Tephra set Km-eta
0130 (?) Unknown Confirmed 4 Tephrochronology Kaimon, Tephra set Km-theta
0030 (?) Unknown Confirmed 3 Tephrochronology Kaimon, Tephra set Km-iota
0080 BCE (?) Unknown Confirmed 4 Tephrochronology Kaimon, Tephra set Km-kappa
0270 BCE (?) Unknown Confirmed 4 Tephrochronology Kaimon, Tephra set Km-lamda
0650 BCE (?) Unknown Confirmed 4 Tephrochronology Kaimon, Tephra set Km-mu
0700 BCE (?) Unknown Confirmed 2 Tephrochronology Kaimon, Tephra layer Km-nu
1450 BCE (?) Unknown Confirmed   Tephrochronology Mizunashi, Kagami, Ikezoko maars
1500 BCE (?) Unknown Confirmed 4 Tephrochronology Kaimon, Tephra layer Km-xi
1550 BCE (?) Unknown Confirmed   Tephrochronology Nabeshima-dake
1610 BCE (?) Unknown Confirmed 3 Tephrochronology Kaimon, Tephra layer Km-omicron
1780 BCE (?) Unknown Confirmed 4 Tephrochronology Kaimon, Tephra set Km-pi
2010 BCE (?) Unknown Confirmed 4 Tephrochronology Kaimon, Tephra layer Km-rho
2690 BCE ± 75 years Unknown Confirmed 5 Radiocarbon (uncorrected) Ikeda-ko caldera, Tephra layer Ikp
5050 BCE (?) Unknown Confirmed   Tephrochronology Unagi, Narikawa and Yamakawa maars

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.

Photo Gallery


Weathering of volcanic ash deposits can produce rich volcanic soils that are fertile nutrients for agriculture, such as these fields at the foot of Kaimon volcano in southern Kyushu. It is no accident that population density is high near volcanoes--although volcanic ash soils underlie less than 1% of the Earth's land surface, they support 10% of the world's population. Volcanic soils support crops such as rice fields in Indonesia, the Philippines, and Japan, sugar cane in Hawaii and Central America, and vineyards in Italy.

Photo by Lee Siebert, 1988 (Smithsonian Institution).
See title for photo information.
Symmetrical Kaimon volcano is the youngest and most prominent feature of the Ibusuki volcanic field at the southern tip of Kyushu. The 922-m-high stratovolcano, seen here from the north, was built during the last 4000 years and has produced all the historical eruptions of the volcanic field. The Ibusuki field, located west of the Pleistocene Ata caldera, contains numerous small central cones, maars, and the 4.5-km-wide Ikedo-ko caldera. The latest eruptions of Kaimon took place during the 9th century.

Photo by Lee Siebert, 1988 (Smithsonian Institution).
See title for photo information.
Ikeda-ko, a 4.5-km-wide, lake-filled caldera, was formed as a result of a major explosive eruption about 4600 years ago. Kaimon volcano, the highest peak of the Ibusuki volcanic field, rises to the SW above the caldera rim. The eruption of the 3 cu km Ikeda pumice was the the largest Holocene eruption of the Ibusuki volcanic field, which consists of a group of small central volcanoes and maars, along with Ikeda-ko caldera and Kaimon stratovolcano.

Photo by Lee Siebert, 1988 (Smithsonian Institution).
See title for photo information.

Smithsonian Sample Collections Database


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

Affiliated Sites