Experimental investigation of the meteorologically influenced sound propagation through an inhomogeneous forest site
Experimental investigation of the meteorologically influenced sound propagation through an inhomogeneous forest site
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通过不均匀森林场地受气象影响的声音传播的实验研究
DOI：
10.1127/0941-2948/2013/0387
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发表时间：
2013
影响因子：
1.2
通讯作者：
Ziemann
中科院分区：
文献类型：
--
作者：
Ziemann
使用测量和简单模型，在德累斯顿（德国）附近的气象锚定站 Tharandter Wald 的一片空地和邻近的林分中研究了低频声音传播。因此，声音传播取决于到声源的距离以及地面和冠层的声学特性。特别关注气象对声音传播的影响，因为与未受影响的情况相比，森林地区气象状况的改变导致声音传播发生变化。测量于 2011 年夏末进行。声波信号的传播是在空地中沿 115 m 的声程记录的，在老云杉林中沿 75 m 的声程记录的。除了声学测量之外，还使用高度为 40 m 的微气象桅杆研究了大气状态。第一个结果表明，即使在约 10 m 的短距离内，气象因素也会对声音传播产生显着影响。
The low-frequency sound propagation was investigated at a clearing and an adjacent forest stand at the meteorological Anchor Station Tharandter Wald near Dresden (Germany) using measurements and simple models. Thereby, the sound propagation is dependent on the distance to the sound source as well as on the acoustic properties of the ground surface and the canopy. Particular attention was paid to the meteorological influence on the sound propagation because the modified meteorological regime in forest areas leads to a changed sound propagation in comparison to the unaffected case. The measurements were carried out in the late summer time of 2011. The propagation of acoustic signals was recorded along a sound path of 115 m at a clearing and 75 m in an old spruce stand. Besides the acoustic measurements the atmospheric state was investigated using a micro-meteorological mast of a height of 40 m. First results demonstrate a noticeably meteorological influence on sound propagation even at short distances of some 10 m.