arXivDaily arXiv每日学术速递 周一至周五更新
arXiv周末暂无论文更新,休息一下吧,周末愉快~~
arXiv 1706.02632physics.bio-phphysics.ao-ph
收藏

鱼群的声音共鸣。关于学校教育机制的建议

Acoustic resonance by fish schools. A proposal for the schooling mechanism

F. Meseguer, F. Ramiro-Manzano

摘要:

鱼群的声学特性已经用一团气泡模拟出来了。与气泡云呈现集体呼吸模式类似,鱼群也呈现集体呼吸模式,其中整个鱼群作为一个个体共振。在这里,我们推测,在鱼群的鱼鳔的多次散射放大的海洋的水声噪声可能会产生有吸引力的声学力量,是强大到足以占学校的机制。我们的模型预测存在的吸引力Bjerknes部队,大到30%的鱼的重量为20米大的鱼群,并在学校的中心的每一条鱼的吸引力被取消时,鱼增加/减少其气囊的体积/压力。据我们所知,这是第一个纯粹的机械力的例子,可能有助于鱼类被束缚或释放的学校。这项研究可能会在许多科学领域带来新的研究领域,超越通常使用的最近邻相互作用机制,它将有助于我们理解生态学,物理学,化学和生物学系统的集体过程。

英文摘要:

The acoustic properties of a fish school have been modelled using a cloud of bubbles. Similar to how bubble clouds present a collective monopole mode, a fish school also shows a collective breathing mode in which the whole school resonates as a single body. Here, we conjecture that the underwater acoustic noise of the ocean amplified by the multiple scattering of swim bladders in the fish school might produce attractive acoustic forces that are strong enough to account for the schooling mechanism. Our model predicts the presence of attractive Bjerknes forces, as large as 30% of the fish weight for 20-metre large fish schools, and that the attractive force on every fish in the centre of the school is cancelled when the fish increase/decrease the volume/pressure of its gas bladder. To the best of our knowledge, this is the first example of a purely mechanical force that might contribute to fish being bound to or released from the school. The study may lead to new areas of research in many scientific fields beyond the nearest-neighbour interaction mechanism customarily used, and it would help in our understanding of collective processes of systems in ecology, physics, chemistry, and biology.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

↑