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 Wind Speed with r-year Return Period?
Wind Speed with r-year Return Period calculator uses Wind Speed with r Year Return Period = Mean Value of Maximum Monthly Wind Speeds+0.78*Standard Deviation of Maximum Monthly Wind Speeds*(ln(12*Return Period of Wind)-0.577) to calculate the Wind Speed with r Year Return Period, The Wind Speed with r-year Return Period formula is defined based on the assumption that extreme wind speeds by a simple approach using monthly extreme wind speeds may be helpful in conjunction with limited data sets. Wind Speed with r Year Return Period is denoted by Ur symbol.
How to calculate Wind Speed with r-year Return Period using this online calculator? To use this online calculator for Wind Speed with r-year Return Period, enter Mean Value of Maximum Monthly Wind Speeds (Um), Standard Deviation of Maximum Monthly Wind Speeds (σm) & Return Period of Wind (Tr) and hit the calculate button. Here is how the Wind Speed with r-year Return Period calculation can be explained with given input values -> 32.57129 = 17.5+0.78*3.32*(ln(12*50)-0.577).