asked in category: General Last Updated: 12th January, 2020

# How do you find the recurrence interval?

Use the formula: Recurrence Interval equals the number of years on record divided by the number of events. Plug in your data and calculate the recurrence interval. In the example, 100 years divided by five occurrences produces a recurrence interval of 20 years.

People also ask, what is the recurrence interval?

A return period, also known as a recurrence interval or repeat interval, is an average time or an estimated average time between events such as earthquakes, floods, landslides, or a river discharge flows to occur.

One may also ask, how do you calculate the return period of rainfall? Example Calculations A 100 year flood has a return period of T = 100, so the probability of a flood of equal or greater magnitude occurring in any one year period is p = 1/T = 1/100 = 0.01. Thus there is a probability of 0.01 or 1 in 100 that a 100 year flood will occur in any given year.

Likewise, what is the recurrence interval of an earthquake?

recurrence interval. The recurrence interval, or return period, is the average time span between earthquake occurrences on a fault or in a source zone.

What is the relationship between recurrence interval and annual probability?

Statistical techniques, through a process called frequency analysis, are used to estimate the probability of the occurrence of a given precipitation event. The recurrence interval is based on the probability that the given event will be equaled or exceeded in any given year.

### How long is the rupture interval of the West Valley fault?

7

12th January, 2020

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