NEW ATTENUATION RELATIONSHIPS FOR PEAK GROUND ACCELERATION AND VELOCITY CONSIDERING EFFECTS OF FAULT TYPE AND SITE CONDITION

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  • SI Hongjun
    Dept. of Built Environment, Interdisciplinary Graduate School of Science and Engineering, Tokyo Institute of Technology
  • MIDORIKAWA Saburoh
    Dept. of Built Environment, Interdisciplinary Graduate School of Science and Engineering, Tokyo Institute of Technology

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Other Title
  • 断層タイプ及び地盤条件を考慮した最大加速度・最大速度の距離減衰式
  • ダンソウ タイプ オヨビ ジバン ジョウケン オ コウリョ シタ サイダイ カソクド サイダイ ソクド ノ キョリ ゲンスイシキ
  • New attenuation relationship for peak ground acceleration and velocity considering effects of fault type and site condition
  • New attenuation relations for peak ground acceleration and velocity considering effects of fault type and site condition

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New attenuation relationships for peak ground acceleration on soil ground and for peak ground velocity on stiff ground are developed based on the database of strong motion recordings from 21 Japan earthquakes. In the database, the near-source recordings are included, and the earthquakes are classified into three groups according to the fault type. The new attenuation relationships show that an intra-plate earthquake generates stronger acceleration and velocity than inter-plate and crustal events. The results also show that the earthquake with deeper focal depth generates stronger ground motion.

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