やや長周期表面波の群速度の逆解析による地下構造の推定と地震動評価への応用

• 植竹 富一

  東京電力(株)原子力研究所耐震研究室

• 山中 浩明

  東京工業大学大学院総合理工学研究科

• 菅原 正晴

  東電設計(株)原子力計画部

書誌事項

タイトル別名

• ESTIMATION OF SUBSURFACE STRUCTURE USING SURF ACE-WAVE DISPERSION DATA AND ITS APPLICATION TO GROUND MOTION EVALUATION
• ヤヤ チョウシュウキ ヒョウメンハ ノ グン ソクド ノ ギャク カイセキ ニ

抄録

It is important to estimate effects of deep subsurface structures to long-period ground motion. In this study, the mean subsurface structures between a observatory at Kashiwazaki, Niigata prefecture and epicenters are estimated as a multi-layered model by an inversion of the group velocities using a genetic algorithm. The estimated models for the events located around Niigata have deep pre-Neogene basement and the depth of basement estimated from the epicenter near Toyama trough is especially deep. These features of the models agree with the regional variation of geological data and gravity anomaly. Furthermore, long-period ground motions at the observatory are evaluated by normal mode theory using the estimated models and existing fault parameters. Over whole features of the records were reconstructed by synthetics. It is concluded that the subsurface structure estimated from single station data is so useful to evaluate long-period ground motions.

収録刊行物

• 日本建築学会構造系論文集

  日本建築学会構造系論文集 62 (496), 37-43, 1997

  日本建築学会

キーワード

• 地下構造
• 表面波分散性
• 長周期地震動
• 遺伝的アルゴリズム
• 新潟地域

詳細情報

• CRID: 1390282680614604544
• NII論文ID: 110004303379
• NII書誌ID: AN10438559
• DOI: 10.3130/aijs.62.37_5
• ISSN: 18818153
• ISSN: 13404202
• NDL書誌ID: 4237247
• Web Site: https://ndlsearch.ndl.go.jp/books/R000000004-I4237247
• Web Site: https://www.jstage.jst.go.jp/article/aijs/62/496/62_KJ00004100669/_pdf
• 本文言語コード: ja
• データソース種別:
  • JaLC
  • NDL
  • Crossref
  • CiNii Articles
• 抄録ライセンスフラグ: 使用不可