Relating to or denoting lines on a map connecting places where an earthquake was experienced with equal strength.
- Figure 1 is an isoseismal map of the earthquake zone, showing the distribution of intensities of shaking, with contours of equal intensity.
- Robert Mallet's detailed study of the 1857 Naples earthquake resulted in the first known isoseismal map.
- Example sentences
- An isoseismic map of the Chi-Chi Earthquake enabled us to clarify the geography of the disaster area and the impact zone.
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