Summarized the eruptions of 1 km3 DRE or more that have been in the Japanese archipelago since 300,000 years ago.
#1...300,000 to 120,000 years ago
• 30万年日本の巨大噴火史① 300,000～...
#3...59,000 to 30,000 years ago
• 30万年日本の巨大噴火史③ 59,000～3...
#4...29,940 years ago to the present
• 30万年日本の巨大噴火史④ 29,940年前～現在
About the age:
Only those that can be identified to some extent are taken up. Stratovolcanoes, which mainly erupt lava flows, are often of unspecified age, and there were many eruptions that could not be taken up.
About the eruption amount:
Focusing on those for which Dense Rock Equivalent can be specified, we also cover those for which eruption of 1 km3 DRE or more is certain even if it cannot be specified.
Data reference source:
GSJ "Accumulated magma eruption staircase map of major Quaternary volcanoes in Japan"
www.gsj.jp/res...
GSJ "1/200,000 Japanese volcano map"
gbank.gsj.jp/v...
Machida and Arai "Atlas of Tephra in and around Japan"
etc.
22 авг 2024
