Abstract
A spread of infrasound sensor has recently been installed over Japan through a research program of Kochi University of Technology (KUT), primarily for natural disaster mitigation over this region (e.g., tsunami disaster). Sensors installed at over 20 points over Japan continuously recorded multi-parameter signals (e.g., ground acceleration, local temperature, audible noise level, atmospheric pressure, and sound pressure level) integrated into a compact instrument. Scientifically, the program aims to contribute both to the understanding of infrasound sources over Japan and an expansion of the spatial coverage of the Japanese infrasound network. The monitoring results were transferred continuously to the main database server in Chiba under File Transfer Protocol (FTP) line communication. Through this session, we present (1) the detail of our infrasound network recently done as an irregular array system; (2) the system description of our sensor in detail; (3) the implementation of irregular array signal processing for our infrasound cases; (4) several confirmed of detected infrasound signals from natural activity phenomena are presented. The features calculated for the signals detected are used to associate signals with the event and observe individually instrument performance. The results show the potential of the sensors and its network for making continuous infrasound monitoring under effective and efficient installation.
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Batubara, M., Yamamoto, My., Hiroaki, S. (2021). Results from Infrasound Monitoring Using Integrated Sensors Data by Means of a Network Along Multisite Point Over Japan. In: Sapountzakis, E.J., Banerjee, M., Biswas, P., Inan, E. (eds) Proceedings of the 14th International Conference on Vibration Problems. ICOVP 2019. Lecture Notes in Mechanical Engineering. Springer, Singapore. https://doi.org/10.1007/978-981-15-8049-9_15
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