TY - JOUR AU - Guerra, Viviane da Silva AU - Acevedo, Otávio Costa AU - Oliveira, Pablo Eli Soares de PY - 2018/04/18 Y2 - 2024/03/28 TI - The influence of the complexity of ground surface in the flow through a spectral analysis of turbulent quantities in the stable boundary layer JF - Ciência e Natura JA - CeN VL - 40 IS - 0 SE - Special Edition DO - 10.5902/2179460X30851 UR - https://periodicos.ufsm.br/cienciaenatura/article/view/30851 SP - 241-244 AB - <h3>Two micrometeorological towers located in the experimental site of Pedras Altas in the region of Pampa Gaúcho were separated by a distance of about 500 m from each other, enabling a small scale horizontal variability, due to the complexity of the terrain. Such variability favors distinct contributions in the modes of flow. This work points out a relation between classes of maximum wind measured in the station of the top of the hill with obstructions provoked by the heterogeneity of the terrain. Through a spectral analysis it was possible to find encouraging results for future work, as the study shows a pertinent relation between non-turbulent low frequency motions with surface heterogeneity and how this implies in the horizontal and vertical turbulent velocity.</h3> ER -