Search Results for author: Hiromichi Nagao

Found 3 papers, 0 papers with code

Seismic-phase detection using multiple deep learning models for global and local representations of waveforms

no code implementations4 Nov 2022 Tomoki Tokuda, Hiromichi Nagao

Finally, in an application to low-frequency earthquakes, we demonstrated the flexibility of the proposed method, which is readily adaptable for the detection of low-frequency earthquakes by retraining only a local model.

Observation Site Selection for Physical Model Parameter Estimation toward Process-Driven Seismic Wavefield Reconstruction

no code implementations9 Jun 2022 Kumi Nakai, Takayuki Nagata, Keigo Yamada, Yuji Saito, Taku Nonomura, Masayuki Kano, Shin-ichi Ito, Hiromichi Nagao

The seismic wavefield is reconstructed by the numerical simulation using the parameters estimated based on the observed signals at only observation sites selected by the proposed method.

Multi-dimensional Graph Fourier Transform

no code implementations21 Dec 2017 Takashi Kurokawa, Taihei Oki, Hiromichi Nagao

The proposed methods are applicable to a wide variety of data that can be regarded as signals on Cartesian product graphs.

Time Series Analysis

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