Yoshida, K., T. Saito, Y. Urata, Y. Asano and A. Hasegawa,
Temporal changes in stress drop, frictional strength, and earthquake size distribution in the 2011 Yamagata-Fukushima, NE Japan, earthquake swarm, caused by fluid migration, submitted to J. Geophys. Res. Solid Earth, on April 14, 2017.
Followings are stress drops, corner frequencies, and seismic moments estimated for earthquakes in the 2011 Yamagata-Fukushima boarder swarm.
Stress drops, corner frequencies, and seismic moments determined by the coda normalization method with the ECS correction
ID, lon, lat, dep, Mo (Nm), Mw, log10 stress drop (MPa), corner frequency (Hz), Residual, Day after the Tohoku-Oki earthquake, nstn, MJMA
Stress drops, corner frequencies, and seismic moments determined by the coda normalization method without the ECS correction
ID, lon, lat, dep, Mo (Nm), Mw, log10 stress drop (MPa), corner frequency (Hz), Residual, Day after the Tohoku-Oki earthquake, nstn, MJMA
Stress drops and corner frequencies determined by the coda spectral ratio method
ID, corner frequency (Hz), Mw, stress drop (MPa), Residual
Followings are the site-amplification factors, the attenuation factors, and the empirical correction spectrum used for the estimations of source spectra.
Site-amplifications factors (frequency, dummy, log10 amplification factor, component):
N. SROH,
N. YGTH,
N. ARKH,
N. AHIH,
N. NKWH,
N. SKWH,
N. SISH,
N. TSTH,
N. YNZH,
N. NGUH,
N. TWAH,
N. ATKH,
N. KMYH,
N. ONIH,
N. THTH,
N. ATDH,
N. KMKH,
N. INWH,
N. SMGH,
N. NNMH,
N. MRMH,
N. FKSH,
N. KMAH,
N. MRUH,
N. NAZH.
Attenulation factors (frequency, Q-1 value)
Empirical correction spectrum (frequency, log10 amplification factor)
Waveform data used for the estimations can be downloaded from the NIED Hi-net website (http://www.hinet.bosai.go.jp/?LANG=en).
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