Examples from the Web for isoseismal
That isoseismal along which the decline of energy is most rapid was called by K. von Seebach a pleistoseist.
Within the isoseismal 3, buildings were more or less slightly damaged.
Outside the isoseismal 4, the earthquake was observed at several places.
It will be seen that there is a certain rough correspondence between these curves and the isoseismal lines.
The curve for the first degree (A) coincides of course with the isoseismal line of intensity 2.