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Tattering of flags at different sites in relation to wind and weather

1968; Elsevier BV; Volume: 5; Issue: 3 Linguagem: Inglês

10.1016/0002-1571(68)90001-0

1878-2949

Nick Rutter,

Aeolian processes and effects

The correspondence between weekly flag tatter and wind on forty field sites is examined in relation to prevailing weather over forty weeks from May, 1965 to February, 1966. Rate of tatter is a linear response to run-of-wind except when water in the material accelerates tatter or when flags suffer ribbon tearing. A flag trimmed after each successive exposure is preferred to an untrimmed flag in that it is more sensitive to low wind speeds and tatters at rates which are independent of its age. Initial preparation of flags need not be exact and when flags are trimmed weekly, tatter may be recorded as length loss. Flags record exposure in six ways but they may prove most useful when used with sufficient anemometers to establish site regression of tatter on wind-run.