| 词条 | Akahoya eruption |
| 释义 |
| name = Akahoya eruption | photo = | photo-size = | caption = | date = 6,500 years ago | volcano =Kikai Caldera | type =Ultra Plinian | location =Kyūshū, Japan | coordinates = {{coord|30.789|130.308}} | VEI =7 | map = | map-size = | map-caption = | impact =One of only six eruptions of its size in the Holocene; dramatically changed vegetation in Southern Kyūshū }} The Akahoya eruption was the strongest known volcanic eruption of the Kikai Caldera in Kyūshū, Japan. It ejected about {{convert|150|km3|cumi}} of volcanic material, giving it a 7 on the Volcanic Explosivity Index. The Akahoya eruption is one of only six known eruptions reaching that magnitude during the Holocene, or the last twelve thousand years. It dramatically changed{{clarify|date=October 2016}} vegetation in Southern Kyūshū.[1] However newer surveys put this volume of ejecta at 500 km3.[2] Archaeologically it has been dated around 7,300 cal. BP during the Earliest Jōmon period,[3] but it has also been radiocarbon dated to 6,500 BP.[4] This eruption has been linked to the end of the Initial Jomon period, which would place the Jomon alongside the Minoan Culture in meeting its end by way of massive volcanic eruptions. This gives more credence to cultural traditions that maintain stories of established cultures vanishing quickly and completely, and invites further study into volcanic activity on human societal development. References1. ^{{cite journal |last=Sugiyama |first=Shinji |authorlink= |year=2002 |month= |title=The Impact of the Kikai-Akahoya Explosive Eruption on Vegetation in Southern Kyushu, Japan, Clarified by Phytolith Studies. |journal=Quaternary Research |volume=41 |issue=4 |pages=311–316 |issn=0418-2642 |url= |accessdate= |quote= |doi=10.4116/jaqua.41.311 }} {{volcanology-stub}}{{Japan-hist-stub}}2. ^{{Cite journal | url=https://www.nature.com/articles/s41598-018-21066-w | doi=10.1038/s41598-018-21066-w| pmid=29426943| pmc=5807397| title=Giant rhyolite lava dome formation after 7.3 ka supereruption at Kikai caldera, SW Japan| journal=Scientific Reports| volume=8| issue=1| pages=2753| year=2018| last1=Tatsumi| first1=Yoshiyuki| last2=Suzuki-Kamata| first2=Keiko| last3=Matsuno| first3=Tetsuo| last4=Ichihara| first4=Hiroshi| last5=Seama| first5=Nobukazu| last6=Kiyosugi| first6=Koji| last7=Nakaoka| first7=Reina| last8=Nakahigashi| first8=Kazuo| last9=Takizawa| first9=Hideaki| last10=Hayashi| first10=Kazuki| last11=Chiba| first11=Tatsuro| last12=Shimizu| first12=Satoshi| last13=Sano| first13=Mamoru| last14=Iwamaru| first14=Hikaru| last15=Morozumi| first15=Haruhisa| last16=Sugioka| first16=Hiroko| last17=Yamamoto| first17=Yojiro}} 3. ^{{cite journal |last=Kuwahata |first=Mitsuhiro |authorlink= |year=2002 |title=Age and Cultural Influence of the Kikai-Akahoya Eruption as Seen from Archaeological Material in South Kyushu, Japan |journal=Quaternary Research |volume=41 |issue=4 |pages=317–330 |issn=0418-2642 |url= |accessdate= |quote= |doi=10.4116/jaqua.41.317 }} 4. ^{{cite journal |last=Maeno |first=Fukashi |authorlink= |author2=Taniguchi, Hiromitsu |year=2005 |month= |title=Eruptive History of Satsuma Iwo-jima Island, Kikai Caldera, after a 6.5ka Caldera-forming Eruption |journal=Bulletin of the Volcanological Society of Japan |volume=50 |issue=2 |pages=71–85 |issn=0453-4360 |url= |accessdate= |quote= }} 4 : Volcanoes of Kyushu|Natural disasters in Japan|Prehistoric volcanic events|VEI-7 eruptions |
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