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 ?
What we've seen by looking back at the records is that the energy level conditions we measured during Hurricane Sandy have a two-and-a-half to three-year recurrence interval.
A recurrence interval (RI) is calculated as the reciprocal of the p value and represents the number of days of daily surveillance required for the expected number of clusters at least as unusual as the observed cluster to be equal to 1 by chance (II).
1991), whereas rainfall simulation studies showed that as cover in grazed pastures increases, peak runoff rate decreases, particularly for events with an average recurrence interval of less than 3 years (Connolly et al.
After half the average recurrence interval, the chance per year rises to roughly the long-term average.
It might be impossible to predict when the next earthquake may occur but scientists can pin down what is called a recurrence interval or the average time span between earthquake occurrences.
Engineers, geoscientists, geologists, and researchers from the US Geological Survey provide an overview of the earthquake, then discuss seismology and its regional effects, including the magnitude, recurrence interval, and near-source ground-motion modeling of the earthquake; ground-motion site effects from multimethod shear-wave velocity characterization; site response; shear-wave velocity structure and attenuation derived from aftershock data; regional seismic-wave propagation from the earthquake; widespread groundwater-level offsets caused by it; and finite element simulation of an intraplate earthquake setting.
The Phivolcs study roughly estimated that in 200 to 400 years, there will be a possible recurrence interval for large magnitude earthquakes from magnitude 6 to 7 at least along the northern portion of the Marikina Valley Fault.
The recurrence interval of the events found in this trench is about 400-450 years (Alvarado, 2008).
This can be attributed to long recurrence interval of such events and the short disasterrelated memory of the masses," the report said.
and others (2008), Long recurrence interval of faulting beyond the 2005 Kashmir earthquake around the northwestern margin of the Indo-Asian collision zone, Geology, 36(9), 731-734.
The geological parameters extracted are necessary to characterize the seismic activity of faults (maximum magnitude, slip rate, level of activity, recurrence interval, etc.
To calculate the recurrence interval of flooding for a river, the annual peak discharges are collected and ranked according to size.