| Akahoya eruption | |
|---|---|
| Volcano | Kikai Caldera |
| Date | 6,860 to 7,440 years calibrated before present[1] |
| Type | Ultra-Plinian |
| Location | Kyūshū, Japan 30°47′20″N 130°18′29″E / 30.789°N 130.308°E |
| Volume | 332–457 km3 (80–110 cu mi)[2] |
| VEI | 7[3] |
| Impact | One of only six confirmed eruptions of its size in the Holocene; dramatically changed vegetation in Southern Kyūshū and impacted on the Jōmon culture |
 Affected areas of the eruption | |
The Akahoya eruption or Kikai-Akahoya eruption was the strongest known volcanic eruption of the Kikai Caldera in Kyūshū, Japan. It ejected 332–457 km3 (80–110 cu mi) of volcanic material, giving it a Volcanic Explosivity Index of 7.
- ^ Smith, Victoria C.; Staff, Richard A.; Blockley, Simon P.E.; Ramsey, Christopher Bronk; Nakagawa, Takeshi; Mark, Darren F.; Takemura, Keiji; Danhara, Toru (2013). "Identification and correlation of visible tephras in the Lake Suigetsu SG06 sedimentary archive, Japan: chronostratigraphic markers for synchronising of east Asian/west Pacific palaeoclimatic records across the last 150 ka". Quaternary Science Reviews. 67: 121–137. Bibcode:2013QSRv...67..121S. doi:10.1016/j.quascirev.2013.01.026. ISSN 0277-3791.
- ^ Satoshi Shimizu; Reina Nakaoka; Nobukazu Seama; Keiko Suzuki-Kamata; Katsuya Kaneko; Koji Kiyosugi; Hikaru Iwamaru; Mamoru Sano; Tetsuo Matsuno; Hiroko Sugioka; Yoshiyuki Tatsumi (2024). "Submarine pyroclastic deposits from 7.3 ka caldera-forming Kikai-Akahoya eruption". Journal of Volcanology and Geothermal Research. 448 (108017). Bibcode:2024JVGR..44808017S. doi:10.1016/j.jvolgeores.2024.108017.
- ^ "Kikai: Eruptive History". Global Volcanism Program. Smithsonian Institution. Retrieved 2024-02-26.