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●表面波探査 -関係論文- ↑上へ戻る |
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Surface wave propagation in two-dimensional models and We have studied surface wave propagation in two-dimensional models and applied it to near-surface S-wave velocity delineation. Surface wave methods have been applied to both engineering and earth science problems to image the S-wave velocity of Earth. The analysis of the surface wave methods is usually based on the inversion of dispersion curves in which one-dimensional models are assumed. The real subsurface structure can be, however, two-dimensional or three-dimensional.The studies of surface-wave propagation in two- and three-dimensional models have been limited. We have performed the numerical modeling of surface waves using a two-dimensional finite difference method, and have revealed that the surface waves can be used for imaging two-dimensinal models. The surface wave method was applied to the real seismic data. The data acquisition was similar to the shallow P-wave seismic reflection methods. The multi-channel analysis of surface waves was applied to each dispersion curve in order to obtain one-dimensional S-wave velocity models. The velocity models up to depth of ten meters obtained through the surface-wave method agreed with the results obtained through seismic refraction and reflection methods. つくば技術開発センター：探査工学センター |
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