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ESTIMATION OF UNDERGROUND STRUCTURE AROUND THE SABAE FAULT BASED ON MICROTREMOR OBSERVATION
http://hdl.handle.net/10098/2372
http://hdl.handle.net/10098/2372992c92f3-5690-42ca-9696-056f3651ada9
名前 / ファイル | ライセンス | アクション |
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48_giz2009.pdf (4.1 MB)
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Item type | 学術雑誌論文 / Journal Article(1) | |||||
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公開日 | 2010-01-25 | |||||
タイトル | ||||||
タイトル | ESTIMATION OF UNDERGROUND STRUCTURE AROUND THE SABAE FAULT BASED ON MICROTREMOR OBSERVATION | |||||
言語 | ||||||
言語 | eng | |||||
キーワード | ||||||
主題Scheme | Other | |||||
主題 | Sabae Fault | |||||
キーワード | ||||||
主題Scheme | Other | |||||
主題 | microtremor observation | |||||
キーワード | ||||||
主題Scheme | Other | |||||
主題 | inversion | |||||
キーワード | ||||||
主題Scheme | Other | |||||
主題 | underground configuration | |||||
資源タイプ | ||||||
資源タイプ識別子 | http://purl.org/coar/resource_type/c_1843 | |||||
資源タイプ | other | |||||
著者 |
KOJIMA, Keisuke
× KOJIMA, Keisuke× YAMAMOTO, Hirofumi× NOGUCHI, Tasuya× OKAMOTO, Takuo× NAKAYA, Eiji× MOTO, Koudai |
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抄録 | ||||||
内容記述タイプ | Abstract | |||||
内容記述 | Reliable Quaternary structure is indispensable in order to accurately predict the seismic damage of the region. We executed microtremor observations along the several exploration lines orthogonal to the Sabae Fault. The phase velocities of surface waves were calculated from the array observations by applying the spatial autocorrelation analysis. The dispersion curves were inverted to a vertical S-wave profile using a genetic algorithm. To interpolate the array observations, the single-point 3-components observations were made. It was confirmed that there were two predominant periods in the H/V spectrum and each predominant period were caused by the Alluvium and the Diluvium respectively. We estimated the Quaternary configuration from these predominant periods using the estimated S-wave velocities based on the quarter wavelength rule. The 3D S-wave structure model was proposed by using the vertical structure of the microtremor observation sites. Furthermore, we observed gravity anomaly and calculate the density structure. The validity of the estimated structure from the microtremor observation was confirmed by comparing with the density structure and with the existing deep well data. The estimated configuration showed that the Quaternary deposit has a folded mound near the Sabae fault and that the lower diluvium is shifting over 100m across the fault. | |||||
書誌情報 |
Proceedings of the International Symposium on Geo-informatics and Zoning for Hazard Mapping p. 285-290, 発行日 2009-12 |
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出版者 | ||||||
出版者 | GIZ2009実行委員会 | |||||
書誌レコードID | ||||||
識別子タイプ | NCID | |||||
関連識別子 | TD00006809 |