Song Zhongchang, Zhang Yu, Wang Xianyan, Wei Chong
Key Laboratory of Underwater Acoustic Communication and Marine Information Technology of the Ministry of Education, College of Ocean and Earth Sciences, Xiamen University, Xiamen 361005, People's Republic of China
Laboratory of Marine Biology and Ecology, Third Institute of Oceanography, State Oceanic Administration, Xiamen 361005, People's Republic of China
J Acoust Soc Am. 2017 Oct;142(4):EL381. doi: 10.1121/1.5006204.
A finite element method was used to investigate the temperature influence on sound beams of the Indo-Pacific humpback dolphin. The numerical models of a dolphin, which originated from previous computed tomography (CT) scanning and physical measurement results, were used to investigate sound beam patterns of the dolphin in temperatures from 21 °C to 39 °C, in increments of 2 °C. The -3 dB beam widths across the temperatures ranged from 9.3° to 12.6°, and main beam angle ranged from 4.7° to 7.2° for these temperatures. The subsequent simulation suggested that the dolphin's sound beam patterns, side lobes in particular, were influenced by temperature.
采用有限元方法研究温度对印太驼海豚声束的影响。利用源自先前计算机断层扫描（CT）扫描和物理测量结果的海豚数值模型，研究海豚在21°C至39°C（以2°C为增量）温度下的声束模式。在这些温度下，-3dB波束宽度范围为9.3°至12.6°，主波束角度范围为4.7°至7.2°。随后的模拟表明，海豚的声束模式，特别是旁瓣，受温度影响。
