INFLUENCE OF FAULT MECHANISM, DEPTH, AND REGION ON STRESS DROPS OF SMALL AND MODERATE EARTHQUAKES IN JAPAN

• SATOH Toshimi

  Ohsaki Research Institute, Inc.

抄録

Stress drops of 168 earthquakes (focal depth ≤60 km, 4.4≤MW≤6.9) are estimated by a generalized-inverse method using strong motion records in Japan. Stress drops of crustal earthquakes are dependent of focal depths. Stress drops of reverse-faulting earthquakes are two times greater than those of strike-slip faulting earthquakes and stress drops of strike-slip faulting earthquakes are two times greater than those of normal-faulting earthquakes. These results are consistent with the crustal strength expected from a frictional law. Stress drops of intraplate earthquakes have more variation than those of interplate earthquakes, but are two times greater than those of interplate earthquakes on average.

収録刊行物

• STRUCTURAL ENGINEERING / EARTHQUAKE ENGINEERING

  STRUCTURAL ENGINEERING / EARTHQUAKE ENGINEERING 23 (1), 125S-134S, 2006

  公益社団法人 土木学会

キーワード

• stress drop
• fault mechanism
• crustal earthquake
• interplate earthquake
• intraplate earthquake

詳細情報

• CRID: 1390001205117881472
• NII論文ID: 130004677911
• DOI: 10.2208/jsceseee.23.125s
• ISSN: 18823424
• ISSN: 02898063
• 本文言語コード: en
• データソース種別:
  • JaLC
  • Crossref
  • CiNii Articles
• 抄録ライセンスフラグ: 使用不可