Meteorological effects on the 3D sound propagation inside an inhomogeneous forest area
Meteorological effects on the 3D sound propagation inside an inhomogeneous forest area
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气象对不均匀森林区域内 3D 声音传播的影响
DOI：
10.1127/metz/2016/0710
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发表时间：
--
影响因子：
1.2
通讯作者：
Heimann
中科院分区：
文献类型：
--
作者：
Ziemann;Schady;Heimann
目前正在讨论树木对声音传播的影响，以减少交通基础设施或工业区附近的声音暴露。这种影响是由于树木本身的反射和散射造成的直接影响，以及通过树木改变的气象和地面效应造成的间接影响。先前的调查提供了森林地区声音衰减的复杂情况，特别是时空变化的气象影响。因此，大气和声学模型的三维模型链被调整并应用于特殊的气象和植被特定条件。应用气象中尺度模型来模拟不均匀森林地点内的温度和风场。气象量用作声学 FDTD（时域有限差分）模型的日变化输入数据，以模拟声音传播。因此，考虑了植被元素、地表阻抗和声音折射的影响。这些模拟与 2011 年初秋在德累斯顿（德国）附近进行的户外测量有关。人工信号的声音传播是沿着长达 190 m 的声音路径测量的，穿过空地以及古老的云杉林。给出了测量和模型仿真之间的比较结果，并讨论了这些结果在噪声防护方面的可能应用。模型结果证实了接收器位置处测量的声级昼夜周期。有树和无树的模拟表明，对于低频，树木每 100 m 已经过度衰减约 4 dB。
The influence of trees on sound propagation is currently discussed to reduce the sound exposure near transport infrastructure or industrial areas. This influence is direct due to reflection and scattering at the trees themselves as well as indirect through meteorological and ground effects modified by the trees. Previous investigations provide a mixed picture of sound attenuation within forested areas, in particular for the temporally and spatially variable meteorological influence. Thus, a three-dimensional model chain of atmospheric and acoustic models was adapted and applied to special meteorological and vegetation-specific conditions. A meteorological mesoscale model was applied to simulate temperature and wind fields within an inhomogeneous forest site. The meteorological quantities are used as diurnally variable input data for the acoustic FDTD (finite-difference time-domain)-model to simulate the sound propagation. Thereby, the effects of vegetation elements, impedance ground surface, and sound refraction are considered. The simulations are related to outdoor measurements, which were performed in early autumn 2011 near Dresden (Germany). The sound propagation of artificial signals was measured along sound paths of up to 190 m length through a clearing as well as through an old spruce stand. Results of the comparison between measurement and model simulations are presented and possible applications of these results with regard to noise protection aspects are discussed. The model results confirm the measured diurnal cycle of sound levels at the receiver positions. Simulations with and without trees suggest an excess attenuation of the trees by about 4 dB per 100 m already for low frequencies.
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均匀落叶和常绿树林中的声音传播
影响因子：
2.4
作者：
T. Embleton
通讯作者：
T. Embleton
异质针叶树冠层中的风场：使用高分辨率 3D 植被扫描对动量吸收进行参数化
影响因子：
2.8
作者：
Ronald Queck;A. Bienert;H. Maas;Stefan Harmansa;V. Goldberg;C. Bernhofer
通讯作者：
C. Bernhofer
影响因子：
2.4
作者：
PRICE, MA;ATTENBOROUGH, K;HEAP, NW
通讯作者：
HEAP, NW
室外声音传播时域有限差分计算中的地面阻抗模拟
DOI：
--
发表时间：
2005
期刊：
影响因子：
--
作者：
K. Heutschi;M. Horvath;Jan Hofmann
通讯作者：
Jan Hofmann
测试气象分类以预测长期平均声级
DOI：
--
发表时间：
2004
期刊：
影响因子：
--
作者：
D. Heimann;E. Salomons
通讯作者：
E. Salomons