科学素养与现象阐释·英语30篇（9）
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The Acoustic Principle Behind Whale Song Transmission Across Ocean Basins via the SOFAR Channel
鲸歌如何借由SOFAR声道实现跨洋盆传播的声学原理
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The SOFAR (Sound Fixing and Ranging) channel is a horizontal layer in the ocean where sound speed reaches a minimum, typically at 700–1200 m depth.SOFAR（声波固定与测距）通道是海洋中声速达到最小值的水平层，通常位于700–1200米深度。
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This minimum arises from competing effects: decreasing temperature with depth lowers sound speed, while increasing pressure raises it.该最小值源于温度随深度下降（降低声速）与压力随深度增加（提高声速）两种效应的竞争。
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Sound rays refracting toward lower-speed regions become trapped within the channel, propagating thousands of kilometers with minimal attenuation.声线向低速区折射后被束缚在该通道内，可传播数千公里而衰减极小。
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Blue and fin whales emit low-frequency calls (10–40 Hz) ideally matched to SOFAR channel waveguide properties and ambient noise floors.蓝鲸和长须鲸发出的低频叫声（10–40赫兹）恰好匹配SOFAR通道的波导特性及环境噪声基底。
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Hydrophone arrays detect identical song phrases across Pacific and Atlantic basins—confirming inter-basin acoustic coupling under favorable conditions.水听器阵列在太平洋和大西洋盆地均检测到相同的歌声片段，证实了有利条件下跨洋盆的声学耦合。
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Seasonal thermocline shifts alter channel depth by ±150 m, requiring whales to adjust call frequencies to maintain resonance within the waveguide.季节性温跃层位移使通道深度上下变动达±150米，迫使鲸类调整叫声频率以维持波导内的共振。
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Military surveillance systems historically exploited SOFAR for submarine detection, prompting treaties restricting low-frequency active sonar near whale habitats.军用监视系统曾利用SOFAR探测潜艇，促使相关条约限制在鲸类栖息地附近使用低频主动声呐。
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Ocean warming compresses the SOFAR channel vertically, increasing transmission loss and potentially fragmenting acoustic communication networks.海洋变暖导致SOFAR通道垂直压缩，增大传输损耗，可能割裂声学通信网络。
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Bioacousticians now integrate ray-tracing models with real-time Argo float profiles to predict seasonal song reception ranges.生物声学家如今将射线追踪模型与实时Argo浮标剖面数据结合，预测季节性歌声接收范围。
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Cultural transmission studies show regional dialects diverge when SOFAR connectivity weakens—linking physical acoustics to behavioral evolution.文化传递研究表明，当SOFAR连通性减弱时，区域性方言出现分化，将物理声学与行为演化联系起来。
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Deep-sea mining noise at 50–200 Hz overlaps critically with whale call bandwidths, raising concerns about chronic masking effects.深海采矿噪声频段（50–200赫兹）与鲸类叫声频带高度重叠，引发长期掩蔽效应的担忧。
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This natural waveguide exemplifies how Earth’s geophysical structure enables biological communication across planetary scales.这一天然波导体现了地球地球物理结构如何支撑跨越行星尺度的生物通信。