exceedance

Noun
  1. (geology) the probability that an earthquake will generate a level of ground motion that exceeds a specified reference level during a given exposure time (synset 105099897)
    "the concept of exceedance can be applied to any type of environmental risk modeling"
    referred to in: geology - a science that deals with the history of the earth as recorded in rocks
    is a type of: chance, probability - a measure of how likely it is that some event will occur; a number expressing the ratio of favorable cases to the whole number of cases possible

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