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Initial Phase Analysis of R Waves from Great Earthquakes
http://hdl.handle.net/2237/6561
http://hdl.handle.net/2237/65613d10f585-c1f8-46c0-9550-1034c1ec0175
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ot1758_abstr.pdf (180.7 kB)
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ot1758.pdf (1.6 MB)
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Item type | 学位論文 / Thesis or Dissertation(1) | |||||
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公開日 | 2006-06-21 | |||||
タイトル | ||||||
タイトル | Initial Phase Analysis of R Waves from Great Earthquakes | |||||
言語 | en | |||||
その他のタイトル | ||||||
その他のタイトル | 巨大地震によるR波の初期位相解析 | |||||
言語 | ja | |||||
著者 |
Furumoto, Muneyoshi
× Furumoto, Muneyoshi× 古本, 宗充 |
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アクセス権 | ||||||
アクセス権 | open access | |||||
アクセス権URI | http://purl.org/coar/access_right/c_abf2 | |||||
抄録 | ||||||
内容記述 | The phase equalization was carried out for R waves in order to obtain the information on the source mechanisms of the four earthquakes, the Kurile earthquake of 1963, its largest aftershock,the Rat Is.earthquake of 1965, and the Tokachi-oki earthquake of 1968. Initial phase was computed using the corresponding complete great-circle phase velocity, so that the influences of the lateral heterogeneity of the earth's structure were considerably reduced. The fault length of the Kurile earthquake was determined from the initial phase radiation pattern on the basis of a simple propagating fault model. There is no trade=off in this method between the fault length and the rupture velocity. Such a trade-off is inherent to the conventional directivity method. A fault length of 250 Km was obtained, which was found to be nearly equal to the length of the aftershock area. We have introduced a dynamic fault parameter `source time' that can be determined from the phase measurement using the complete great-circle phase velocity rather than the average phase velocity of individual multiple R waves. This quantity corresponds to the rise time of the source time function of an equivalent point source. Source times of 97,62,174, and 115 sec were obtained for the above four earthquakes. | |||||
言語 | en | |||||
内容記述タイプ | Abstract | |||||
内容記述 | ||||||
内容記述 | 名古屋大学博士学位論文 学位の種類:理学博士 (論文) 学位授与年月日:昭和54年10月12日 | |||||
言語 | ja | |||||
内容記述タイプ | Other | |||||
言語 | ||||||
言語 | eng | |||||
資源タイプ | ||||||
資源 | http://purl.org/coar/resource_type/c_db06 | |||||
タイプ | doctoral thesis | |||||
書誌情報 |
発行日 1979-10-12 |
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学位名 | ||||||
言語 | ja | |||||
学位名 | 理学博士 | |||||
学位授与機関 | ||||||
学位授与機関識別子Scheme | kakenhi | |||||
学位授与機関識別子 | 13901 | |||||
言語 | ja | |||||
学位授与機関名 | 名古屋大学 | |||||
言語 | en | |||||
学位授与機関名 | Nagoya University | |||||
学位授与年度 | ||||||
学位授与年度 | 1979 | |||||
学位授与年月日 | ||||||
学位授与年月日 | 1979-10-12 | |||||
学位授与番号 | ||||||
学位授与番号 | 乙第1758号 | |||||
フォーマット | ||||||
application/pdf | ||||||
フォーマット | ||||||
application/pdf | ||||||
著者版フラグ | ||||||
値 | publisher | |||||
URI | ||||||
識別子 | http://hdl.handle.net/2237/6561 | |||||
識別子タイプ | HDL |