Abstract
In order to assure the train safety under construction of Amarube Bridge, we' ve been conducting wind observation at the site since November 2007. In this paper, wind characteristics of the north-northwest wind are analyzed. The coherences of main stream component and vertical component are well approximated by the exponential function proposed by Davenport but decay factors are much larger than usual, so the influence of this difference on gust response should be examined precisely in the future. In addition, we calculate the wind of the site using MM5 and LES, and compare the results with the observation. As a result, wind directions show well agreement with the observation, and wind speeds are well calculated on the whole.
