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Fig. 4 | Earth, Planets and Space

Fig. 4

From: Earthquake early warning for the 2016 Kumamoto earthquake: performance evaluation of the current system and the next-generation methods of the Japan Meteorological Agency

Fig. 4

a Warning area and prediction result for the warning issuance by the current system for case No. 1 in Table 1. Colors of each area indicate the predicted JMA seismic intensities at the time, with the warning area marked by shading. The actual and estimated epicenters are indicated by red and green stars, respectively, with corresponding magnitudes in the same colors. A red line represents the theoretical P-wave, and a green line indicates the theoretical S-wave. The time at the upper left corresponds to the warning issuance time. b Final prediction result by the current system for case No. 1. Definitions of colors, shading, and symbols are the same as in (a). c Actual seismic intensities observed in case No. 1. Colors of each area indicate the observed JMA seismic intensities. A red star marks the actual epicenter

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