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The Millennium Eruption of Changbaishan Tianchi Volcano is VEI 6, not 7
Bulletin of Volcanology, Volume: 83, Issue: 11, Start page: 74
Swansea University Author: Danielle McLean
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DOI (Published version): 10.1007/s00445-021-01487-8
Abstract
The Millennium Eruption (AD 946–947) of Changbaishan Tianchi Volcano is one of the largest known eruptions in recorded history. With the help of previously published isopachs and distal ash thicknesses, we re-calculate the bulk volume of its distal eruptive product, the B-Tm ash, as 27–62 km3 and th...
Published in: | Bulletin of Volcanology |
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ISSN: | 0258-8900 1432-0819 |
Published: |
Springer Science and Business Media LLC
2021
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Online Access: |
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URI: | https://cronfa.swan.ac.uk/Record/cronfa58671 |
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Abstract: |
The Millennium Eruption (AD 946–947) of Changbaishan Tianchi Volcano is one of the largest known eruptions in recorded history. With the help of previously published isopachs and distal ash thicknesses, we re-calculate the bulk volume of its distal eruptive product, the B-Tm ash, as 27–62 km3 and the total eruption volume as 40–98 km3. The updated volume estimates are around half of those estimated by previous studies of this seminal eruption. Our work shows that the Millennium Eruption is a VEI-6 eruption, rather than VEI-7 as previously envisaged, and its magnitude is also lower than previously thought. This has implications for regional frequency-magnitude relationships and may also partially explain the limited regional, rather than global, climatic effects of the Millennium Eruption. |
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Keywords: |
Millennium eruption; Changbaishan tianchi volcano; Isopachs; B-Tm ash; Tephra volume; VEI |
College: |
Faculty of Science and Engineering |
Funders: |
National Research Foundation Singapore and the Singapore Ministry of Education under the Research Centres of Excellence initiative (Project Number: NRF2018NRF-NSFC003ES-010); AXA Joint
Research Initiative under the project “Volcanic Risk Assessment in Asia”; National Natural Science
Foundation of China (Grant No. 41861144025); |
Issue: |
11 |
Start Page: |
74 |