Question

Explain return period or recurrence interval in terms of probability that an
event will take place.

Answer 1

Recurrence interval denotes the number of years in which a particular phenomenon (such as a flood , earthquake or tsunamis etc. ) can be expected once. In probability terms we can say that recurrence interval is the possibility of a particular event to happen in a specific period of time . Recurrence interval is the period of time between the exceeding or equalling of a specific event. Return period is the average recurrence interval for a certain event.

Recurrence interval is the reciprocal of probability of occurrence (P)

i.e., RECURRENCE INTERVAL, T = 1/ P