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中文摘要：
利用浙江沿海东海塘观测塔（120m高），实测得到3次强台风（海棠Haitang0505、麦莎Matsa 0509和卡努Khanun0515）登陆时段距地面5个不同高度处平均风速记录资料。统计表明平均风剖面幂指数登陆前变化均非常剧烈，登陆后则趋于平稳；实测场地（近A类场地条件）多数情况台风的风剖面幂指数均大于规范规定值0．12，仅在台风中心经过观测塔较短时间内取值小于规范建议值；当观测塔始终位于台风影响外围区时，平均风剖面幂指数随着台风中心与观测塔距离的增大而缓慢减小；当观测塔穿过台风中心时，平均风剖面幂指数随着台风中心与观测塔距离的增大而增大，同时，台风登陆后，观测塔所在地的平均风速逐渐减小，而平均风剖面幂指数却逐渐增大。
英文摘要：
Mean wind speeds at different 5 heights during the landfall process of three strong typhoons, i.e. Typhoon Haitang0505, Typhoon Matsa0509 and Typhoon Khanun0515, are recoded at the anemometer tower with a height of 120m located in Donghaitang, Zhejiang Province. It is found that the power exponents of wind profile vary violently before the landfall of the typhoon and become stable after that. The power exponents for tropical cyclone conditions in terrain category A are mostly larger than the value given in the code, which is 0.12, and are smaller than 0.12 only when the center of the typhoon passes through the anemometer tower. At the periphery of the typhoon, mean wind profile decreases slowly with the increase of the distance between the typhoon center and the anemometer tower. When the typhoon center passes through the anemometer tower, the mean wind profile increases with the distance mentioned above. And after the landfall of the typhoon, the mean wind speeds decrease while the mean wind profiles increase.
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