The earthquake early warning (EEW) information provided by the Japan Meteorological Agency (JMA) is designed to enable public officials, key safety personnel, and the general public to take advance countermeasures against the effects of earthquake strong motion. The goal of the early warning system is to provide the maximum expected seismic intensity and the earliest S-wave arrival time in each subprefectural area (about a quarter to a third of one prefecture) before the strong motion arrival. For the system to be effective, it is essential that JMA publicize the principle and purpose of the warning messages, the technical limits...
Earthquake Early Warning in Japan: Warning the General Public and Future Prospects
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Osamu Kamigaichi, Makoto Saito, Keiji Doi, Toshiyuki Matsumori, Shin'ya Tsukada, Kiyoshi Takeda, Toshihiro Shimoyama, Kouji Nakamura, Masashi Kiyomoto, Yukihiro Watanabe; Earthquake Early Warning in Japan: Warning the General Public and Future Prospects. Seismological Research Letters 2009;; 80 (5): 717–726. doi: https://doi.org/10.1785/gssrl.80.5.717
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