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15 Degree Shadow Zone of the P-wave Travel-times in the Western Northwest Pacific Basin Observed by an Ocean-bottom Seismometer Long Range Array
https://doi.org/10.15083/0000032859
https://doi.org/10.15083/00000328591eba1524-0668-4724-8e94-09e5be326dd5
名前 / ファイル | ライセンス | アクション |
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ji0613002.pdf (1.1 MB)
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Item type | 紀要論文 / Departmental Bulletin Paper(1) | |||||
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公開日 | 2008-05-30 | |||||
タイトル | ||||||
タイトル | 15 Degree Shadow Zone of the P-wave Travel-times in the Western Northwest Pacific Basin Observed by an Ocean-bottom Seismometer Long Range Array | |||||
言語 | en | |||||
言語 | ||||||
言語 | eng | |||||
資源タイプ | ||||||
資源 | http://purl.org/coar/resource_type/c_6501 | |||||
タイプ | departmental bulletin paper | |||||
ID登録 | ||||||
ID登録 | 10.15083/0000032859 | |||||
ID登録タイプ | JaLC | |||||
その他のタイトル | ||||||
その他のタイトル | 北西太平洋海盆西部におけるP波走時の15°以遠の影領域 : 海底地震計長距離群列観測 | |||||
著者 |
南雲, 昭三郎
× 南雲, 昭三郎× 大内, 徹× 笠原, 順三× 是澤, 定之 |
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著者別名 | ||||||
識別子 | 128086 | |||||
識別子Scheme | WEKO | |||||
姓名 | Nagumo, Shozaburo | |||||
著者別名 | ||||||
識別子 | 128087 | |||||
識別子Scheme | WEKO | |||||
姓名 | Ouchi, Toru | |||||
著者別名 | ||||||
識別子 | 128088 | |||||
識別子Scheme | WEKO | |||||
姓名 | Kasahara, Junzo | |||||
著者別名 | ||||||
識別子 | 128089 | |||||
識別子Scheme | WEKO | |||||
姓名 | Koresawa, Sadayuki | |||||
著者所属 | ||||||
著者所属 | 東京大学地震研究所 | |||||
著者所属 | ||||||
著者所属 | 神戸大学理学部 | |||||
抄録 | ||||||
内容記述タイプ | Abstract | |||||
内容記述 | A long range ocean-bottom seismometer array observation in the western Northwest Pacific Basin revealed a P-wave shadow zone beyond the epicentral distance of 15°. The apparent surface velocity of the P-wave in the distance ranges from 12° to 15° is about 8.6 km/sec, which seems to be a continuation of the 8.4 km/sec (apparent surface velocity) travel-times in the range from 6° to 12°. The off-set of travel-times at the shadow zone is about 1.7-2.0 seconds. The low-velocity zone which corresponds to this shadow zone could be a major transition from lithosphere to asthenosphere. A review of the regional differences of shadow zone gives such an estimate that the depth of the transition is deep beneath the western Northwest Pacific Basin, roughly in a depth range of 100-200 km. The detailed structural analysis will be reported in the next paper. | |||||
書誌情報 |
東京大學地震研究所彙報 = Bulletin of the Earthquake Research Institute, University of Tokyo 巻 61, 号 3, p. 415-427, 発行日 1987-02-10 |
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ISSN | ||||||
収録物識別子タイプ | ISSN | |||||
収録物識別子 | 00408972 | |||||
書誌レコードID | ||||||
収録物識別子タイプ | NCID | |||||
収録物識別子 | AN00162258 | |||||
フォーマット | ||||||
内容記述タイプ | Other | |||||
内容記述 | application/pdf | |||||
日本十進分類法 | ||||||
主題 | 453 | |||||
主題Scheme | NDC | |||||
出版者 | ||||||
出版者 | 東京大学地震研究所 | |||||
出版者別名 | ||||||
Earthquake Research Institute, University of Tokyo |