ULF magnetic field depression as a possible precursor to the 2011/3.11 Japan earthquake von Schekotov, A., Fedorov, E., Hobara, Y., Hayakawa, M.

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The ionospheric precursor to the 2011 march 11 earthquake as based on the Japan-pacific subionospheric VLF/LF network observation von Hayakawa, M., Hobara, Y., Rozhnoi, A., Solovieva, M., Ohta, K., Izutsu, J., Nakamura, T., Yasuda, Y., Yama-guchi, H., Kasahara, Y.

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