2017 Fiscal Year Final Research Report
Establishment of an immediate determination method for indicators on eruption scale and strength using data of typical volcano monitoring instruments and weather radars
| Project/Area Number |
16K12849
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| Research Category |
Grant-in-Aid for Challenging Exploratory Research
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| Allocation Type | Multi-year Fund |
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| Research Field |
Natural disaster / Disaster prevention science
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| Research Institution | Kyoto University |
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Principal Investigator |
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| Co-Investigator(Kenkyū-buntansha) |
青山 裕 北海道大学, 理学研究院, 准教授 (30333595)
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| Co-Investigator(Renkei-kenkyūsha) |
OISHI Satoru 神戸大学, 都市安全研究センター, 教授 (30252521)
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| Research Collaborator |
YAMADA Taishi 防災科学技術研究所, 火山防災研究部門, 特別研究員
TERADA Akihiko 東京工業大学, 理学院, 講師
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| Project Period (FY) |
2016-04-01 – 2018-03-31
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| Keywords | 噴火 / 地震 / 空振 / 噴出量 / 噴出率 / 気象レーダー / レーダー反射強度 / 噴煙高度 |
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| Outline of Final Research Achievements |
We obtained the seismic and acoustic energies and durations of 2014 and 2015 eruptions of Kuchinoerabujima. We estimated the altitude of the eruption plume by a force at the seismic source and compare with the plume altitude by visual observation for the 2015 eruption. We compared seismic waveforms and tilt changes of eruptions in Japan and clarified common features of the eruptions of Kusatsushiranesan, Ontakesan and Kuchinoerabujima.
We detected the radar reflection intensity corresponding to eruption plumes of Sakurajima and Shinmoedake. We estimated the plume height of the Sakurajima eruption on November 13, 2017 as 4 km by using the radar reflection intensity, although the visual plume height was unknown due to bad weather. By comparing the radar reflection intensities of the 2017 and 2018 eruptions of Shinmoedake with the plume altitudes by visual observation, we accumulated the basic data for establishing a method for estimating altitudes of eruption plumes using weather radars.
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| Free Research Field |
火山物理学
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