Dynamic properties in beam formation of the Indo-Pacific humpback dolphin

被引：2
|
作者：
Song, Zhongchang [1 ,2 ]
Zhang, Yu [1 ,3 ]
Wang, Xianyan [4 ]
机构：
[1] Xiamen Univ, Coll Ocean & Earth Sci, Key Lab Underwater Acoust Commun & Marine Informa, Minist Educ, Xiamen 361005, Fujian, Peoples R China
[2] Woods Hole Oceanog Inst, Biol Dept, Woods Hole, MA 02543 USA
[3] MIT, Dept Mech Engn, Cambridge, MA 02139 USA
[4] State Ocean Adm, Inst Oceanog 3, Xiamen 361005, Fujian, Peoples R China
来源：
EPL | 2018年 / 124卷 / 06期
基金：
中国国家自然科学基金;
关键词：
ECHOLOCATION;
D O I：
10.1209/0295-5075/124/64004
中图分类号：
O4 [物理学];
学科分类号：
0702 ;
摘要：
In this letter, a numerical head model is inspired from an Indo-Pacific humpback dolphin to investigate its acoustic field and beam patterns. The numerical solutions show a dynamic property of the beam patterns. The beam has a minimum width outside but close to the head. Then it widens before reaching a stable state in far distances. Sound pressure along the axis is the highest around the sound source. Afterwards, it decreases rapidly and fluctuates, reaching a local maximum before sounds spread into water, where the axial pressure amplitude decreases with the increase of distance. Copyright (C) EPLA, 2019
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页数：7
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