日本地球惑星科学連合2021年大会

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[J] 口頭発表

セッション記号 M (領域外・複数領域) » M-GI 地球科学一般・情報地球科学

[M-GI33] データ駆動地球惑星科学

2021年6月3日(木) 15:30 〜 17:00 Ch.18 (Zoom会場18)

コンビーナ:桑谷 立(国立研究開発法人 海洋研究開発機構)、長尾 大道(東京大学地震研究所)、上木 賢太(国立研究開発法人海洋研究開発機構)、伊藤 伸一(東京大学)、座長:桑谷 立(国立研究開発法人 海洋研究開発機構)、上木 賢太(国立研究開発法人海洋研究開発機構)

16:30 〜 16:45

[MGI33-09] Testing on Earthquake Prediction by Deep CNN-Labeling Model

*鳥海 光弘1 (1.海洋研究開発機構)

キーワード:地震予測試験研究、深層畳み込みニューラルネット、可変時間法

The global and regional correlated seismicity time series calculated from micro to small earthquakes seismicity data matrix by means of singular value decomposition method are characteristic in earth mechanics and seismicity. The correlated seismicity time series, then potential macroscopic features showing the mechanical behavior of plate boundary zones in the global and regional scales. In this consequence, the relative large earthquakes occurred in the plate subduction zones are possibly corresponded to the multivariate correlated seismicity time series by means of deep neural network type transformation techniques such as RNN, LSTM, CNN, state-space modeling and VAE modeling. This study is the first attempt for prediction testing by these methods with multiple labeling on large earthquake event and shows the available results on global and Japanese island region. The available methods of 1dCNN of various timestep and time-shift are suggested from the viewpoint of accuracy scores and small number of incorrect prediction result. The variational autoencoder (VAE) is also applied for investigation of possible pre-seismic signals appeared in the correlated seismicity time series.