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表層堆積層の地殻応力への影響 : 飛騨から富山能登にかけての断層タイプの変化への応用
https://doi.org/10.15083/0000032456
https://doi.org/10.15083/000003245694943e06-5893-413a-aa96-7160496d4067
名前 / ファイル | ライセンス | アクション |
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IHO83210.pdf (617.3KB)
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Item type | 紀要論文 / Departmental Bulletin Paper(1) | |||||
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公開日 | 2010-03-09 | |||||
タイトル | ||||||
タイトル | 表層堆積層の地殻応力への影響 : 飛騨から富山能登にかけての断層タイプの変化への応用 | |||||
言語 | ja | |||||
言語 | ||||||
言語 | jpn | |||||
キーワード | ||||||
主題 | sedimentary layer | |||||
主題Scheme | Other | |||||
キーワード | ||||||
主題 | crsutal stress | |||||
主題Scheme | Other | |||||
キーワード | ||||||
主題 | fault type | |||||
主題Scheme | Other | |||||
キーワード | ||||||
主題 | Central Japan | |||||
主題Scheme | Other | |||||
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 | 10.15083/0000032456 | |||||
ID登録タイプ | JaLC | |||||
その他のタイトル | ||||||
その他のタイトル | The Influence of a Surface Sedimentary Layer on the Crustal Stress : An Application to Regional Variation of Fault Type from Hida to Toyama and Noto | |||||
著者 |
渡辺, 了
× 渡辺, 了 |
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著者別名 | ||||||
識別子 | 123805 | |||||
識別子Scheme | WEKO | |||||
姓名 | Watanabe, Toru | |||||
著者所属 | ||||||
著者所属 | 富山大学大学院理工学研究部 | |||||
著者所属 | ||||||
著者所属 | The Influence of a Surface Sedimentary Layer on the Crustal Stress | |||||
抄録 | ||||||
内容記述タイプ | Abstract | |||||
内容記述 | The influence of a surface sedimentary layer on crustal stress was formulated, assuming the isostasy of the crust. A sedimentary layer weakens vertical stress because it has a lower density than crystalline rocks in the crust. If the vertical stress is sufficiently reduced by the low-density material, it can change the directions of principal stress axes and lead to regional variations of fault type. The strike-slip fault dominates the Hida area, Central Japan, while the thrust fault is dominant in the Toyama and Noto area, which is north of the Hida area. Thick sedimentary layers are well developed in the Toyama and Noto area. The influence of these sedimentary layers was evaluated using the P-wave velocity structure model constructed by Iidaka et al. (2003). Density is estimated to be 2,000-2,200kg/m3 based on the P-wave velocity and the depth of MOHO. The porosity of the surface layer is estimated to be ~30%, with pores filled with water. The estimated low density can reduce the vertical stress sufficiently to make it the minimum principal stress. This might explain the change of fault type from Hida to Toyama and Noto. | |||||
書誌情報 |
地震研究所彙報 巻 83, 号 2, p. 243-249, 発行日 2008 |
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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 | 51.1 | |||||
主題Scheme | NDC | |||||
出版者 | ||||||
出版者 | 地震研究所 | |||||
出版者別名 | ||||||
Earthquake Research Institute, University of Tokyo |