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Meteotsunami observed by the deep-ocean seafloor pressure gauge network off northeastern Japan
https://nied-repo.bosai.go.jp/records/2877
https://nied-repo.bosai.go.jp/records/28779c6bf287-76e8-44f3-b6af-3730701cb9d9
| Item type | researchmap(1) | |||||||||||||||||||||
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| 公開日 | 2023-03-30 | |||||||||||||||||||||
| タイトル | ||||||||||||||||||||||
| 言語 | ja | |||||||||||||||||||||
| タイトル | Meteotsunami observed by the deep-ocean seafloor pressure gauge network off northeastern Japan | |||||||||||||||||||||
| タイトル | ||||||||||||||||||||||
| 言語 | en | |||||||||||||||||||||
| タイトル | Meteotsunami observed by the deep-ocean seafloor pressure gauge network off northeastern Japan | |||||||||||||||||||||
| 言語 | ||||||||||||||||||||||
| 言語 | eng | |||||||||||||||||||||
| 著者 |
Tatsuya Kubota
× Tatsuya Kubota
× Tatsuhiko Saito
× Naotaka Y. Chikasada
× Osamu Sandanbata
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| 抄録 | ||||||||||||||||||||||
| 内容記述タイプ | Other | |||||||||||||||||||||
| 内容記述 | This study reports an ocean-bottom pressure gauge (OBP) network, S-net, which captured meteotsunamis with amplitudes as small as a few cm, and investigates its validity and limitation for meteotsunami research studies through data analyses and numerical simulations. On July 1, 2020, S-net recorded tsunami-like signals, although no earthquake was reported. These waves, propagating northward with a velocity of ?110 m/s, were explained by an atmospheric low pressure with a maximum amplitude of ?0.5 ± 0.1 hPa moving northeastward at a speed of 45?50 m/s. The maximum amplitudes of the sea-surface height during the low-pressure passing were up to twice larger than those directly converted from the ocean-bottom pressure without considering the effect of the atmospheric pressure. Our results suggest that the S-net with numerical simulations can detect the generation and propagation of meteotsunamis, which could not be achieved in the past when dense OBP networks were not available. | |||||||||||||||||||||
| 言語 | ja | |||||||||||||||||||||
| 抄録 | ||||||||||||||||||||||
| 内容記述タイプ | Other | |||||||||||||||||||||
| 内容記述 | This study reports an ocean-bottom pressure gauge (OBP) network, S-net, which captured meteotsunamis with amplitudes as small as a few cm, and investigates its validity and limitation for meteotsunami research studies through data analyses and numerical simulations. On July 1, 2020, S-net recorded tsunami-like signals, although no earthquake was reported. These waves, propagating northward with a velocity of ?110 m/s, were explained by an atmospheric low pressure with a maximum amplitude of ?0.5 ± 0.1 hPa moving northeastward at a speed of 45?50 m/s. The maximum amplitudes of the sea-surface height during the low-pressure passing were up to twice larger than those directly converted from the ocean-bottom pressure without considering the effect of the atmospheric pressure. Our results suggest that the S-net with numerical simulations can detect the generation and propagation of meteotsunamis, which could not be achieved in the past when dense OBP networks were not available. | |||||||||||||||||||||
| 言語 | en | |||||||||||||||||||||
| 書誌情報 |
ja : Geophysical Research Letters en : Geophysical Research Letters 巻 48, 号 21, p. e2021GL094255, 発行日 2021-10-25 |
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| 出版者 | ||||||||||||||||||||||
| 言語 | ja | |||||||||||||||||||||
| 出版者 | American Geophysical Union | |||||||||||||||||||||
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| 言語 | en | |||||||||||||||||||||
| 出版者 | American Geophysical Union | |||||||||||||||||||||
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| 収録物識別子タイプ | EISSN | |||||||||||||||||||||
| 収録物識別子 | 1944-8007 | |||||||||||||||||||||
| DOI | ||||||||||||||||||||||
| 関連識別子 | 10.1029/2021GL094255 | |||||||||||||||||||||
