Downloads: 108

Files in This Item:
File Description SizeFormat 
a47c0t15.pdf344.05 kBAdobe PDFView/Open
Title: Long-period Ground Motion Simulation in Kinki Area
Other Titles: 近畿地方における長周期地震動のシミュレーション
Authors: YAMADA, Nobuyuki
IWATA, Tomotaka  kyouindb  KAKEN_id
Author's alias: 山田, 伸之
岩田, 知孝
Keywords: やや長周期の地震動シミュレーション
Long period ground motion simulation
Crustal structure model
Finite difference method
Kinki area
Issue Date: 1-Mar-2004
Publisher: 京都大学防災研究所
Journal title: 京都大学防災研究所年報. C = Disaster Prevention Research Institute Annuals. C
Volume: 47
Issue: C
Start page: 149
End page: 155
Abstract: 近畿地方における南海トラフから大阪盆地に至る地殻構造モデルの妥当性の評価のために,紀伊半島沖で発生した2地震の周期2~20秒のやや長周期地震動のシミュレーションを行った。用意した地下構造モデルは,平行層1次元モデルと既往の研究で示されていた地殻構造を3次元的にモデル化したものである。観測記録とシミュレーション結果を比較した結果、3次元構造が考慮されたモデルの方が観測記録をよく再現し、モデルが妥当なものであることを確認した。
We developed the crustal structure model from the source region of the Nankaitrough to the Osaka basin in Kinki area for ground motion modeling by comparingobserved records and simulated long-period (>2s) ground motions using finitedifference method. We examined the records of an intermediate-size event (MW4.3) andthe largest aftershock (MJ7.0) of the 1946 Nankai earthquake occurred at the Nankaitrough. The simulations of the S-wave part by a constructed 3D underground structuremodel reproduced well the observed records than the results by a simple 1D (flat layer)model. We showed that the 3D structure model is applicable for the ground motionsimulation in the long period range, however it is needed more detail crustal velocitystructure information for a better reproduction of the whole observed records.
Appears in Collections:No.47 C

Show full item record

Export to RefWorks

Export Format: 

Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.