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Hokkaido University Collection of Scholarly and Academic Papers >
Graduate School of Science / Faculty of Science >
北海道大学地球物理学研究報告 = Geophysical bulletin of Hokkaido University >
第73号 >
石狩平野北西部における微動アレー探査
| Title: | 石狩平野北西部における微動アレー探査 |
| Other Titles: | Microtremor Array Survey in the Northwestern Part of the Ishikari Plain |
| Authors: | 吉田, 邦一1 Browse this author | | 笹谷, 努2 Browse this author | | 前田, 宜浩3 Browse this author | | 高井, 伸雄4 Browse this author | | 三輪田, 吾郎5 Browse this author | | 大畑, 大志郎6 Browse this author | | Prasad, Dhakal Yadab7 Browse this author | | 鏡味, 洋史8 Browse this author | | Fat-Helbary, Raafat El-Shafei9 Browse this author |
| Authors(alt): | YOSHIDA, Kunikazu1 | | SASATANI, Tsutomu2 | | MAEDA, Takahiro3 | | TAKAI, Nobuo4 | | MIWADA, Goro5 | | OHATA, Daishiro6 | | Prasad, Dhakal Yadab7 | | KAGAMI, Hiroshi8 | | Fat-Helbary, Raafat El -Shafei9 |
| Issue Date: | 19-Mar-2010 |
| Publisher: | 北海道大学大学院理学研究院自然史科学部門（地球物理学） |
| Journal Title: | 北海道大学地球物理学研究報告 |
| Journal Title(alt): | Geophysical bulletin of Hokkaido University |
| Volume: | 73 |
| Start Page: | 159 |
| End Page: | 173 |
| Abstract: | S-wave velocity structures were explored in the northwestern part of Ishikari plain from microtremor array measurements. We measured microtremors using seismometer arrays at 3 sites on 4 days during May - July 2005. Phase velocities in a frequency range of 0.22 - 4.32 Hz were estimated using SPAC（SPatial AutoCorrelation）analysis of the microtremor records. The S-wave velocity structures were obtained by the inversion from the phase velocities using a genetic algorithm technique. The inverted S-wave velocity structures obtained from the microtremor array surveys in the present and previous studies indicate that the S-wave velocities of a geologic layer clearly depend on the depth. |
| Type: | bulletin (article) |
| URI: | http://hdl.handle.net/2115/44471 |
| Appears in Collections: | 北海道大学地球物理学研究報告 = Geophysical bulletin of Hokkaido University > 第73号
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