Vertical ground deformation related to the 2014 and 2015 eruptions at Kuchierabujima Volcano, Japan detected by repeated precise leveling surveys
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- Yamamoto Keigo
- Sakurajima Volcano Research Center, Disaster Prevention Research Institute, Kyoto University
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- Ohkura Takahiro
- Aso Volcanological Laboratory, Graduate School of Science, Kyoto University
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- Yokoo Akihiko
- Aso Volcanological Laboratory, Graduate School of Science, Kyoto University
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- Tameguri Takeshi
- Sakurajima Volcano Research Center, Disaster Prevention Research Institute, Kyoto University
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- Sonoda Tadaomi
- Sakurajima Volcano Research Center, Disaster Prevention Research Institute, Kyoto University
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- Inoue Hiroyuki
- Aso Volcanological Laboratory, Graduate School of Science, Kyoto University
抄録
We conducted precise leveling surveys in Kuchierabujima Volcano, southwest Japan seven times after the occurrence of the 3 August 2014 eruption, in order to detect the vertical ground deformation associated with the eruptions that occurred in 2014 and 2015. The first survey data obtained in August 2014 suggest that vertical displacements associated with the 3 August 2014 eruption were not remarkable on the leveling route, which is located >2.3 km away from Shindake crater. On the other hand, the obvious ground uplift toward the central part of the volcanic edifice was detected during the period between August 2014 and March 2015 surveys. The results of the pressure source analysis suggest that the rapid magma input occurred at a relatively large depth (optimally 7.0 km) and led to the large eruption on May 29, 2015. The ground uplift remained unchanged until at least October 2015, even after the eruptions on 29 May and 18 June 2015. During the period between June and September 2016 surveys, a significant ground subsidence was observed, suggesting that most of the stored magma was removed during this period.
収録刊行物
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- Japan Society for Natural Disaster Science
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Japan Society for Natural Disaster Science 38 (1), 133-144, 2017
日本自然災害学会
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詳細情報 詳細情報について
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- CRID
- 1390845713052831872
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- NII論文ID
- 130007596528
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- ISSN
- 24346705
- 03884090
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- 本文言語コード
- en
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- データソース種別
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- JaLC
- Crossref
- CiNii Articles
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- 抄録ライセンスフラグ
- 使用不可