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To examine the cause of this tsunami, we estimated the horizontal locations of the tsunami source and temporal history of the seafloor displacement, using the tsunami data recorded by the ocean‐bottom pressure gauges \u0026gt;?600?km away. Our results showed the main tsunami source was an uplift located at a caldera‐like bathymetric feature near Sofugan, suggesting the involvement of caldera activity in the tsunami generation. The total seafloor uplift was estimated as ?4?m, and the uplift amount of each event gradually increased over time, reflecting an accelerating occurrence of volcanic unrest of the submarine caldera within only a few hours.", "subitem_description_language": "ja", "subitem_description_type": "Other"}, {"subitem_description": "On 8 October 2023 UTC, significant tsunamis were observed around Japan without any major tsunamigenic earthquake, associated with a series of 14 successive minor earthquakes (m\u003csub\u003eb\u003c/sub\u003e?=?4.5?5.4) near Sofugan in the Izu‐Bonin Islands. To examine the cause of this tsunami, we estimated the horizontal locations of the tsunami source and temporal history of the seafloor displacement, using the tsunami data recorded by the ocean‐bottom pressure gauges \u0026gt;?600?km away. Our results showed the main tsunami source was an uplift located at a caldera‐like bathymetric feature near Sofugan, suggesting the involvement of caldera activity in the tsunami generation. 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Accelerating Seafloor Uplift of Submarine Caldera Near Sofugan Volcano, Japan, Resolved by Distant Tsunami Recordings
https://nied-repo.bosai.go.jp/records/6718
https://nied-repo.bosai.go.jp/records/67186c65f58d-3403-440d-8065-9232d1c9a763
Item type | researchmap(1) | |||||||||||||||||||||
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公開日 | 2024-08-05 | |||||||||||||||||||||
タイトル | ||||||||||||||||||||||
言語 | ja | |||||||||||||||||||||
タイトル | Accelerating Seafloor Uplift of Submarine Caldera Near Sofugan Volcano, Japan, Resolved by Distant Tsunami Recordings | |||||||||||||||||||||
タイトル | ||||||||||||||||||||||
言語 | en | |||||||||||||||||||||
タイトル | Accelerating Seafloor Uplift of Submarine Caldera Near Sofugan Volcano, Japan, Resolved by Distant Tsunami Recordings | |||||||||||||||||||||
言語 | ||||||||||||||||||||||
言語 | eng | |||||||||||||||||||||
著者 |
Tatsuya Kubota
× Tatsuya Kubota
× Osamu Sandanbata
× Tatsuhiko Saito
× Takanori Matsuzawa
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抄録 | ||||||||||||||||||||||
内容記述タイプ | Other | |||||||||||||||||||||
内容記述 | On 8 October 2023 UTC, significant tsunamis were observed around Japan without any major tsunamigenic earthquake, associated with a series of 14 successive minor earthquakes (m<sub>b</sub>?=?4.5?5.4) near Sofugan in the Izu‐Bonin Islands. To examine the cause of this tsunami, we estimated the horizontal locations of the tsunami source and temporal history of the seafloor displacement, using the tsunami data recorded by the ocean‐bottom pressure gauges >?600?km away. Our results showed the main tsunami source was an uplift located at a caldera‐like bathymetric feature near Sofugan, suggesting the involvement of caldera activity in the tsunami generation. The total seafloor uplift was estimated as ?4?m, and the uplift amount of each event gradually increased over time, reflecting an accelerating occurrence of volcanic unrest of the submarine caldera within only a few hours. | |||||||||||||||||||||
言語 | ja | |||||||||||||||||||||
抄録 | ||||||||||||||||||||||
内容記述タイプ | Other | |||||||||||||||||||||
内容記述 | On 8 October 2023 UTC, significant tsunamis were observed around Japan without any major tsunamigenic earthquake, associated with a series of 14 successive minor earthquakes (m<sub>b</sub>?=?4.5?5.4) near Sofugan in the Izu‐Bonin Islands. To examine the cause of this tsunami, we estimated the horizontal locations of the tsunami source and temporal history of the seafloor displacement, using the tsunami data recorded by the ocean‐bottom pressure gauges >?600?km away. Our results showed the main tsunami source was an uplift located at a caldera‐like bathymetric feature near Sofugan, suggesting the involvement of caldera activity in the tsunami generation. The total seafloor uplift was estimated as ?4?m, and the uplift amount of each event gradually increased over time, reflecting an accelerating occurrence of volcanic unrest of the submarine caldera within only a few hours. | |||||||||||||||||||||
言語 | en | |||||||||||||||||||||
書誌情報 |
ja : Geophysical Research Letters en : Geophysical Research Letters 巻 51, 号 12, p. e2024GL108415, 発行日 2024-06-25 |
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出版者 | ||||||||||||||||||||||
言語 | ja | |||||||||||||||||||||
出版者 | American Geophysical Union | |||||||||||||||||||||
出版者 | ||||||||||||||||||||||
言語 | en | |||||||||||||||||||||
出版者 | American Geophysical Union | |||||||||||||||||||||
ISSN | ||||||||||||||||||||||
収録物識別子タイプ | EISSN | |||||||||||||||||||||
収録物識別子 | 1944-8007 | |||||||||||||||||||||
DOI | ||||||||||||||||||||||
関連識別子 | 10.1029/2024GL108415 |