係留気球による市街地風の垂直分布の観測

概要

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This paper describes the wind profiles neutral conditions observed by using the kytoons at four stations in the coast city. Upper mean wind speeds observed by the kytoon showed close relation with the reference wind speed simultaneously measured by fixed anemometer near the ground. Roughness parameter in logarithmic law and exponents in power law were estimated from the mean wind speed profile normalized by reference wind speed. Conclusions are summarized as follows : (1) Logarithmic law and power law are applicable to mean wind speed profile below 50-100 meters. (2) The upper, the lower the peak power spectrum frequency below 50〜100 meters. (3) Cross correlation coefficients of turbulences of the reference wind speed and upper ones are larger at the seaside station than at the urban central station. (4) Relation of roughness parameter and exponent/turbulence intensity is as high as shown by other observations in the urban area.
社団法人日本建築学会の論文
1986-07-30