Calderas · erupting

Aira

Aira (Japan) is a caldera. It rises to 1,117 m above sea level. The GVP records 48 confirmed eruptions in the Holocene, the latest in 2026. An eruption is continuing.

Elevation
1,117 m
Last eruption
2026
Confirmed eruptions
48
Max VEI
6
Country
Japan
Location
31.58° N, 130.66° E
Region (GVP)
Ryukyu Volcanic Arc
GVP type
Caldera
Tectonic setting
Subduction zone / Continental crust (> 25 km)
Main rock type
Andesite / Basaltic Andesite

Show on the timeline GVP entry ↗

Other volcanoes and strong earthquakes within 300 km

Eruption history

VEI – Volcanic Explosivity Index: 0 = lava outpouring, 4 = like Eyjafjallajökull 2010, 6 = like Pinatubo 1991, 7 = like Tambora 1815. The scale is logarithmic – each step is about 10 times more material.

StartEndVEIVent and dating
25 March 2017 continuing 2 Minamidake summit crater · Observations: Reported
13 October 1955 22 August 2016 3 Minami-dake and east flank (Showa crater) · Observations: Reported
29 June 1950 9 September 1950 1 Minami-dake · Observations: Reported
27 July 1948 27 July 1948 1 East flank of Minami-dake (750 m) · Observations: Reported
16 January 1946 16 November 1946 2 East flank of Minami-dake (750 m) · Observations: Reported
16 July 1942 16 July 1942 1 East flank of Minami-dake (750 m) · Observations: Reported
28 April 1941 26 August 1941 2 East flank of Minami-dake (750 m) · Observations: Reported
24 April 1940 9 July 1940 2 Minami-dake and east flank (750 m) · Observations: Reported
26 October 1939 12 November 1939 2 East flank of Minami-dake (750 m) · Observations: Reported
25 February 1938 31 March 1938 2 Minami-dake · Observations: Reported
20 September 1935 24 September 1935 1 Minami-dake · Observations: Reported
12 January 1914 16 May 1915 4 West, east and SE flanks · Observations: Reported
2 July 1860 — 1 Minami-dake · Observations: Reported
27 March 1799 — 2 Minami-dake · Observations: Reported
1797 — 2 Minami-dake · Observations: Reported
1794 — 2 Minami-dake · Observations: Reported
11 September 1791 — 2 Minami-dake · Observations: Reported
29 July 1790 — 2 Minami-dake · Observations: Reported
20 November 1785 — 2 Observations: Reported
3 September 1783 — 3 Observations: Reported
18 January 1782 — 2 NE flank (offshore) · Observations: Reported
8 November 1779 May 1781 4 NE flank, off NE coast, south flank · Observations: Reported
9 September 1756 — 2 Minami-dake · Observations: Reported
September 1749 — 2 Minami-dake summit, west flank? · Observations: Reported
6 April 1742 — 2 Minami-dake · Observations: Reported
January 1706 — 2 Minami-dake · Observations: Reported
1 March 1678 — 2 Minami-dake · Observations: Reported
6 April 1642 — 2 Minami-dake · Observations: Reported
23 September 1478 — 2 Minami-dake · Observations: Reported
3 November 1471 8 October 1476 5 NE and SW flanks, summit crater · Observations: Reported
1468 — 2 Minami-dake · Observations: Reported
778 — 0 Observations: Reported
20 July 766 — 3 Observations: Reported
January 764 — 4 East flank (Nabe-yama) · Observations: Reported
716 718 3 Observations: Reported
708 — 3 Observations: Reported
c. 650 BCE — ? Minami-dake · Isotopic: 14C (uncalibrated)
c. 1,050 BCE — ? Correlation: Magnetism
c. 2,050 BCE — ? Correlation: Magnetism
c. 2,900 BCE — 4 Kita-dake · Isotopic: 14C (uncalibrated)
c. 3,050 BCE — 4 Kita-dake · Isotopic: 14C (uncalibrated)
c. 4,800 BCE — ? Kita-dake · Isotopic: 14C (uncalibrated)
c. 5,400 BCE — ? Kita-dake · Isotopic: 14C (uncalibrated)
c. 5,950 BCE — ? Kita-dake · Isotopic: 14C (uncalibrated)
c. 6,050 BCE — 5 Kita-dake · Isotopic: 14C (uncalibrated)
c. 6,350 BCE — ? Kita-dake · Isotopic: 14C (uncalibrated)
c. 7,750 BCE — ? Kita-dake · Isotopic: 14C (uncalibrated)
8,050 BCE ± 1,000 years — 6 Wakamiko Caldera · Isotopic: 14C (uncalibrated)

Data: Global Volcanism Program, Smithsonian Institution (#282080)