Abstract
The measurement of wind velocities and turbulence was made at the sea coast during high winds. Turbulent intensity is influenced greatly by the roughness of the ground and its estimate becomes large with increasing terrain roughness. But, turblent length scale and two-point correlation are hardly influenced by the roughness. The dependence of turbulent intensity and length scale on wind velocity is not clearly observable. The turbulent length scale increases in proportion to the power of height whose exponent is in the range from 0.2 - 0.4. It was found that the decay parameter of narrow-band cross-correlation coefficient is not constant but it is expressed as function of the ratio of distance to height. As a case study of topographical influence on wind velocities and turbulence, the wind flow over a slender peninsula like a barrier was examined. Though the air flow is accelerated over the peninsula, marked variations on turbulent intensities and length scales are not noticed in longitudinal velocity components compared with the wind over undisturbed open sea.
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