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Earth, Planets and Space
Fig. 3 | Earth, Planets and Space

Fig. 3

From: Source area of the 1858 earthquake swarm in the central Ryukyu Islands revealed by the observations of Father Louis Furet

Fig. 3

Duration and seismic intensity as a function of magnitude and epicentral distance. a Earthquake at 2:30 on September 22, 1858. b Earthquake at 20:00 on October 29, 1858. c Earthquake at 15:36 on November 7, 1858. Red lines show the seismic intensity contours; thick solid and dotted red lines highlight the range of seismic intensity 3 and its error bars, respectively. Blue lines show the duration of shaking contours; blue filled area highlights the area where the shaking duration is in the range of the observed value including error bars

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