Ultra-Plinian eruption in Kyushu, Japan, at around 6,500 BP
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″N130°18′29″E / 30.789°N 130.308°E / 30.789; 130.308
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. 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 (108017). doi:10.1016/j.jvolgeores.2024.108017.
^"Kikai: Eruptive History". Global Volcanism Program. Smithsonian Institution. Retrieved 2024-02-26.
The Akahoyaeruption or Kikai-Akahoyaeruption was the strongest known volcanic eruption of the Kikai Caldera in Kyūshū, Japan. It ejected 332–457 km3...
years before present for this eruption. The caldera was the source of the Kikai-Akahoyaeruption, one of the largest eruptions during the Holocene (10,000 years...
This is a list of volcanoes that have had large explosive eruptions during the Holocene (since about 11,650 years Before Present), with a volcanic explosivity...
tsunamis, floods, typhoons, earthquakes, cyclones, and even volcanic eruptions. The country has gone through thousands of years of natural disasters...
This article is a list of historical volcanic eruptions of approximately magnitude 6 or more on the Volcanic Explosivity Index (VEI) or equivalent sulfur...
remains of the ancient eruption of a colossal volcano. Kikai Caldera was the source of the Akahoyaeruption, one of the largest eruptions during the Holocene...
years along with KO eruption in 8th Millennium BC, The Crater lake's eruption in 7th Millennium BC, The Kikai caldera's Akahoyaeruption in 5th Millennium...
known gold hoard deposited at Varna Necropolis, Bulgaria. 4300 BC: Akahoyaeruption creates the Kikai Caldera and ends the earliest homogeneous Jomon culture...
rare mineral deposition exist on the bay's sea bottom. The massive Akahoyaeruption to the south around 7,300 cal. BP depopulated the bay by pyroclastic...
such late developers, after all". New Scientist. Mar 28, 2007. "Submarine eruption bled Earth's oceans of oxygen". New Scientist. Jul 16, 2008. Clark, Stuart...
years along with KO eruption in 8th Millennium BC, The Crater lake's eruption in 7th Millennium BC, The Kikai caldera's Akahoyaeruption in 5th Millennium...
lava before about 7300 years ago erupting the Kikai-Akahoya tephra. The caldera-forming eruptions began 6400 years ago involving by the time they had...
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