Research theme for competitive and other funds (6)：
2021 - 2024 Understanding the physics of foreshocks based on dense seismic observation and seismicity model
2016 - 2019 Development of hydraulic fracture evaluation by laboratory experiments and AE analysis
2014 - 2018 A Study on Prediction of Rock Failure Scale and its Timing by Observation of Acoustic Emission at Africa Deep Mine
2013 - 2017 Small scale in situ experiments to inject supercritical and liquid carbon dioxide into rock mass
2014 - 2016 Risk evaluation of mining induced earthquakes by analyzing AE activity patterns on faults in deep gold mines in South Africa
2007 - 2009 超至近距離多点観測による様々な時定数を持つ断層破壊現象の統一的理解
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Papers (30)：
Hisahiko Kubo, Makoto Naoi, Masayuki Kano. Recent advances in earthquake seismology using machine learning. Earth, Planets and Space. 2024. 76. 1
Makoto Naoi, Shiro Hirano. Efficient similar waveform search using short binary codes obtained through a deep hashing technique. Geophysical Journal International. 2024
Tsuyoshi Ishida, Yoshinobu Kishimoto, Shuich Desaki, Makoto Naoi, Kenichiro Suzuki, Hirokazu Fujii. Characteristics of carbon dioxide fracturing in comparison to conventional water hydraulic fracturing: Evidence from acoustic emission monitoring of small-scale field experiments. International Journal of Rock Mechanics and Mining Sciences. 2023. 172. 105604-105604
Makoto Naoi, Keiichi Imakita, Youqing Chen, Kazune Yamamoto, Rui Tanaka, Hironori Kawakata, Tsuyoshi Ishida, Eiichi Fukuyama, Yutaro Arima. Source parameter estimation of acoustic emissions induced by hydraulic fracturing in the laboratory. Geophysical Journal International. 2022. 231. 1. 408-425
Yasuo Yabe, Shuhei Abe, Gerhard Hofmann, Dave Roberts, Halil Yilmaz, Hiroshi Ogasawara, Takatoshi Ito, Akio Funato, Masao Nakatani, Makoto Naoi, et al. Stress State in the Source Region of Mw2.2 Earthquake in a Deep Gold Mine in South Africa Determined from Borehole Cores. PURE AND APPLIED GEOPHYSICS. 2022
椋平祐輔, 直井誠, 森谷祐一, 伊藤高敏, 浅沼宏, HAERING Markus O. Constraint on the range of the focal mechanism of microseismicity with In-situ Stress Information. 石油技術協会誌(CD-ROM). 2020. 85. 1-6
田中塁, 直井誠, CHEN Youqing, 山本和畝, 今北啓一, 堤直史, 下田晃嘉, 平松大樹, 川方裕則, 石田毅, et al. Determination of P-wave first motion polarities and moment tensors for hydraulically-induced AEs using CNN technique. 日本地震学会秋季大会講演予稿集(CD-ROM). 2020. 2020
Y. Mukuhira, T. Ito, M.C. Fehler, M. Naoi, H. Moriya, H. Asanuma, M. O. Häring. In-situ stress constraints on the focal mechanisms of induced seismicity. Proc. ISRM2019. 2019. 1380-1387
