GEOPHYSICAL INVESTIGATIONS OF SEISMICALLY INDUCED SURFACE EFFECTS: CASE STUDY OF A LANDSLIDE IN THE SUUSAMYR VALLEY, KYRGYZSTAN
作者： H.-B. Havevith , D. Jongmans , K. Abdrakhmatov , P. Trefois , D. Delvaux
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摘要: In summer 1998, a geophysical survey including seismic profilesand electrical tomography has been carried out in the Suusamyr valley, Kyrgyzstan. The scope wasto investigate surface effects induced by Ms = 7.3 earthquake, 19th of August, 1992. Inthis paper, special attention is paid to case study debris slide triggered earthquake.Seismic data are analysed P-wave refraction technique and wave inversion. Electrical tomographicprofiles processed 2D-inversion. Using geotechnical geological information, P-velocity modelsand resistivity sections interpreted terms materials, order build geological3D model. On basis latter, we static finite element computations as well staticand pseudo-static calculations with Janbu’s method. Newmark displacement was computed, considering or notthe influence shallow soft deposits. results compared real displacementobserved field conclusions drawn about mechanism landslide.
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