Definition of isoseismal in English:

isoseismal

adjective

Geology
  • 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.’

Pronunciation

isoseismal

/ˌʌɪsə(ʊ)ˈsʌɪzm(ə)l/