| 講演要旨(和文) | | 地震動評価において地震動の増幅に関わる表層地盤構造の把握は重要な要素であるが，山間部では、調査機材の運搬が困難であり，表層地盤の調査手法自体の簡便化，観測装置の軽量化，および，山間部特有の傾斜地への装置設置の省力化が求められる．著者らは，山間部において，微動観測に基づいて簡便に表層地盤調査を実施するために，傾斜地でも使用可能なサーボ型の検出器を内蔵し，可搬性に優れた軽量型の微動計の適用性について検討してきた．本研究では，起伏がある山地・山間部特有の傾斜地での微動観測による調査を想定し，装置を傾けた状態で観測した場合の微動記録の特徴とその適用性を，微動アレイ探査への適用例を通じて検討し，従来型の微動計を用いた場合と比較する． |
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| | 講演要旨(英文) | | An acquisition of information about shallow subsurface structure is important to evaluate strong ground motion in point of view of site amplification. In mountainous areas, because it can be difficult condition to carry equipment for geological and geophysical surveys of shallow subsurface structures, we need a simplified survey method with portable equipment. In this research, we measure microtremor by various microtremor observation equipment inclined to the ground surface through array observations. Through comparson of the characteristics of recorded microtremor and estimated phase velocities among different equipment, we discuss an applicability of portable microtremor observation equipment for investigations of shallow subsurface structures in mountainous areas. |
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