A contrastive study of different time interval moving average statistical characteristics of strong wind near ground

In order to make an intensive study of the wind field characteristics in the coastal areas of China, based on the moving average method, the contrastive study of different time interval (3s, 10s, 1min and 10min) moving average statistical characteristics of strong wind near ground in Wenzhou city during two typhoon passages is presented. Compared with the moving average results at 10min time interval, the moving average results at 3s, 10s and 1min time interval utilized the field measurement datum more efficiently, and the more continuous and dense wind field statistics could be obtained, which can lead to a better continuous results and variation trend of mean wind speed and direction, turbulence intensity, gust factor, turbulence integral length scale, power spectral density of fluctuating wind speed, and the change regularity at some special time interval, especially in strong wind conditions. Compared with 3s and 10s time interval moving average method, the 1min time interval moving average method is more convenient in the statistical analysis of wind field for it′s efficiency and lest computation burden.