Extreme ice thicknesses from freezing rain
Final Report
Terms and Definitions
equivalent radial ice thickness: The uniform radial thickness of ice on a cylinder; describes the
ice load.
galloping. Large amplitude, low frequency vibration, typically of
overhead wires and
guys for
tall towers.
mean recurrence interval. The inverse of
the annual exceedance probability. For example, the
ice thickness with an annual exceedance probability of 0.02 has a 50-yr mean recurrence interval.
superstation. A grouping of weather stations with similar climatology for the environmental
load under consideration for the purpose of generating a longer period of record for an extreme
value analysis.
September 2004
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