recurrence interval

recurrence interval

[ri′kər·əns ′int·ər·vəl]
(hydrology)
The average time interval between occurrences of a hydrologic event, such as a flood, of a given or greater magnitude.
References in periodicals archive ?
Target oriented planning of flood protection for the settlement area in accordance with the generally recognized rules of technology, which is located at the current recurrence interval (HQ 100).
This can be attributed to long recurrence interval of such events and the short disasterrelated memory of the masses," the report said.
which provides accurate, innovative and detailed precipitation information to help private and public clients make cost-effective decisions, has launched iRainStat, a service that translates rainfall maps into average recurrence interval (ARI) maps in near real-time.
7 or greater earthquake in the next 30 years (the last major earthquake on this system occurred in 1868, and the fault has a mean recurrence interval of 140 years) (5).
Previous hazard estimates had set the recurrence interval for earthquakes in the region at about 500 years, with a 10-15 per cent chance of another in the next 50 years.
Geological Survey engineers got around to calculating the so-called recurrence interval for the 2006 flood, they said the Susquehanna had not been that high--at the sites of the present-day Unadilla and Conklin, N.
At the 3-month recurrence interval level, [approximately equal to] 4 positive signals will occur per year by chance, whereas at the 2-year level, only 1 positive signal expected by chance will occur every 2 years.
According to their calculations, the recurrence interval, previously believed to be five hundred to eight hundred years, may in fact exceed twenty-five hundred years.
They examined peak discharge relative to recurrence interval for the period 1956-1962, and compared this to data for 1966-1980.
For the stations in the upper Chehalis River, flood peaks were twice the previous flood of record and estimated to have a recurrence interval of 500-years.
this should be designed for a design discharge, the date the recurrence interval of t = 100 corresponds to a (hq100).
The researchers derived a simple method for estimating the recurrence interval of catastrophic flooding on real deltas.