What is Return Period?
Extreme conditions in coastal engineering are often described in terms of return values and return periods. 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 river discharge flows to occur.
How to Calculate Encounter Probability?
Encounter Probability calculator uses Encounter Probability = 1-(1-(Time Interval associated with each Data Point/Return Period of Wind))^(Desired Time Period) to calculate the Encounter Probability, The Encounter Probability formula is defined as the likelihood that waves with significant wave height (Hs) equal to or greater than a specified value (Hs^s) will occur during the design life or a specified period. Encounter Probability is denoted by Pe symbol.
How to calculate Encounter Probability using this online calculator? To use this online calculator for Encounter Probability, enter Time Interval associated with each Data Point (t), Return Period of Wind (Tr) & Desired Time Period (L) and hit the calculate button. Here is how the Encounter Probability calculation can be explained with given input values -> 0.941604 = 1-(1-(30/50))^(3.1).