Fin whale calls are among the strongest animal vocalizations that are detectable over great distances in the oceans. We analyze fin whale songs recorded at ocean-bottom seismometers in the northeast Pacific Ocean and show that in addition to the waterborne signal, the song recordings also contain signals reflected and refracted from crustal interfaces beneath the stations. With these data, we constrain the thickness and seismic velocity of the oceanic sediment and basaltic basement and the P-wave velocity of the gabbroic lower crust beneath and around the ocean bottom seismic stations. The abundant and globally available fin whale calls may be used to complement seismic studies in situations where conventional air-gun surveys are not available.

鲸鱼的叫声是最强烈的动物发声中的一种，可以在远距离的海洋中检测到。我们分析了东北太平洋海底地震仪记录的长须鲸歌曲，结果表明，除了水上信号之外，这些歌曲记录还包含从台下的地壳界面反射和折射的信号。利用这些数据，我们限制了海洋沉积物和玄武岩基底的厚度和地震速度，以及海底地震台站下方和周围的辉长岩下地壳的P波速度。在没有常规气枪勘测的情况下，大量和全球可用的鲸鱼呼唤可用于补充地震研究。