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Waveform Inversion による盆地構造の境界面形状の推定
https://nied-repo.bosai.go.jp/records/5849
https://nied-repo.bosai.go.jp/records/5849d5152b6f-aaca-44ad-8a64-99be464b6ead
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 | Waveform Inversion による盆地構造の境界面形状の推定 | |||||||||||||||||||||
タイトル | ||||||||||||||||||||||
言語 | en | |||||||||||||||||||||
タイトル | Waveform Inversion for the Boundary Shape of Basin Structures | |||||||||||||||||||||
著者 |
青井 真
× 青井 真
× 岩田 知孝
× 小林 芳正
× 入倉 孝次郎
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抄録 | ||||||||||||||||||||||
内容記述タイプ | Other | |||||||||||||||||||||
内容記述 | We develop a method to determine the boundary shape of basin structures using seismograms observed on the surface through a waveform inversion scheme. Our method is based on the fact that seismic waves observed at stations on the surface are affected not only by the local structure beneath the observation point but also by the whole basin structure. This fact suggests a possibility to determine the boundary shape by using the seismic records at only a few surface stations. This paper examines numerically how to determine the boundary shape from observed records on the surface in the case of the two dimensional SH problem. For simplicity, we parameterize only the boundary shape, i. e. the thickness variation of the sedimental layer. This inversion is performed iteratively since the problem we deal with is a non-linear inverse problem. When an appropriate model is given, we can evaluate the boundary shape accurately even though the waveform data at only a few surface stations are given. | |||||||||||||||||||||
言語 | ja | |||||||||||||||||||||
抄録 | ||||||||||||||||||||||
内容記述タイプ | Other | |||||||||||||||||||||
内容記述 | We develop a method to determine the boundary shape of basin structures using seismograms observed on the surface through a waveform inversion scheme. Our method is based on the fact that seismic waves observed at stations on the surface are affected not only by the local structure beneath the observation point but also by the whole basin structure. This fact suggests a possibility to determine the boundary shape by using the seismic records at only a few surface stations. This paper examines numerically how to determine the boundary shape from observed records on the surface in the case of the two dimensional SH problem. For simplicity, we parameterize only the boundary shape, i. e. the thickness variation of the sedimental layer. This inversion is performed iteratively since the problem we deal with is a non-linear inverse problem. When an appropriate model is given, we can evaluate the boundary shape accurately even though the waveform data at only a few surface stations are given. | |||||||||||||||||||||
言語 | en | |||||||||||||||||||||
書誌情報 |
ja : 地震 第2輯 en : Zisin (Journal of the Seismological Society of Japan. 2nd ser.) 巻 46, 号 2, p. 95-107, 発行日 1993 |
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出版者 | ||||||||||||||||||||||
言語 | ja | |||||||||||||||||||||
出版者 | 公益社団法人 日本地震学会 | |||||||||||||||||||||
出版者 | ||||||||||||||||||||||
言語 | en | |||||||||||||||||||||
出版者 | SEISMOLOGICAL SOCIETY OF JAPAN | |||||||||||||||||||||
ISSN | ||||||||||||||||||||||
収録物識別子タイプ | ISSN | |||||||||||||||||||||
収録物識別子 | 0037-1114 | |||||||||||||||||||||
DOI | ||||||||||||||||||||||
関連識別子 | 10.4294/zisin1948.46.2_95 |