期刊
JOURNAL OF THE ACOUSTICAL SOCIETY OF AMERICA
卷 140, 期 6, 页码 4288-4297出版社
ACOUSTICAL SOC AMER AMER INST PHYSICS
DOI: 10.1121/1.4968853
关键词
-
Automated and manual acoustic localizations of migrating bowhead whales were used to estimate source level and calling depth distributions of their frequency-modulated-modulated calls over seven years between 2008 and 2014. Whale positions were initially triangulated using directional autonomous seafloor acoustic recorders, deployed between 25 and 55m water depth near Kaktovik, Alaska, during the fall westward migration. Calling depths were estimated by minimizing the discrepancy between source level estimates from at least three recorders detecting the same call. Applying a detailed waveguide propagation model to the data yielded broadband source levels of 161 +/- 9 dB re 1 mu Pa-2 s at 1m (SEL) for calls received between 20 and 170Hz. Applying a simpler 15 log(10)(R) power-law propagation model yielded SEL source levels of 158 +/- 10dB. The most probable calling depths lay between 22 and 30m: optimal depths for long-range acoustic signal transmission in this particular environment. (C) 2016 Acoustical Society of America.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据