| 講演要旨(和文) | | 地震時の地表面の揺れは地下構造や周辺の地形により複雑に影響を受け，地震計の観測密度以上に局所的に変化することは広く知られている．しかしながら，このような局所的な変化を面的に計測し可視化を行うには多数の地震計の設置が伴い多大なコストが生じるため，高密度観測網の整備が進んでいる日本においてもその事例はない．そこで本研究では安価で小型，かつ既存のネットワークに頼らない地震計とそのネットワークの構築を目的とし，小型地震計の試作を行った．具体的には，地表加速度の検出にはMEMSの一種である三軸加速度センサ，ネットワークには無線規格の一種であるZigBee，それらの制御にはArduinoと呼ばれるマイコンを用いた． |
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| | 講演要旨(英文) | | The shake of surface ground by earthquakes are affected complexly by subsurface structure and peripheral geographical features.And, it is widely known that surface ground motion changes more locally than general density of the seismometers. Imaging such a very local surface ground motion is difficult. Because, it is very expensive to install a number of seismometers. Even in Japan where some high density observation systems are running, density of seismometers is not enough to image very local surface ground motion.In this study, we developed new network of seismometers that is independent from existence communication networks and each seismometers is small and inexpensive.We use the MEMS sensor to measure the acceleration of ground surface.Also use ZigBee that has wireless network device.MEMS and ZigBee are controled by a microcontroller called "Arduino". |
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