The Lower St. Lawrence Seaway (LSLS), in eastern Canada, is an important habitat for several species of endangered baleen whale. As we seek to reduce the hazards that these endangered species face from human activity, there is increasing demand for detailed knowledge of their habitat use. Only a sparse network of hydrophones exists in the LSLS to remotely observe whales. However, there is also a network of onshore seismometers, designed to monitor earthquakes, that have sufficiently high sample rates to record fin and blue whale calls. We present a simple method for detecting band-limited, regularly repeating calls, such as the 20 Hz calls of fin and blue whales, and apply the method to build a catalog of fin and blue whale detections at 14 onshore seismometers across the LSLS, over approximately a 4-year period. The resulting catalog contains over 600 000 fin whale calls and almost 60 000 blue whale calls. Individual calls are rarely detected at more than one seismometer. Fin whale calls recorded onshore often consist of multiple seismic phases arriving as a ∼2 sequence. Onshore seismometers provide a valuable, previously unused source of data for monitoring baleen whales. However, in the LSLS, the current seismometer network cannot provide high-precision whale tracking alone, so a denser deployment of onshore and/or offshore seismometers is required.

中文翻译：

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用陆上地震仪监测圣劳伦斯河下游的长须鲸和蓝鲸

位于加拿大东部的下圣劳伦斯海道 (LSLS) 是几种濒临灭绝的须鲸的重要栖息地。当我们寻求减少这些濒临灭绝的物种因人类活动而面临的危害时，对它们栖息地使用的详细知识的需求越来越大。LSLS 中仅存在一个稀疏的水听器网络来远程观察鲸鱼。然而，还有一个陆上地震仪网络，旨在监测地震，具有足够高的采样率来记录长须鲸和蓝鲸的叫声。我们提出了一种简单的方法来检测带限制的定期重复呼叫，例如长须鲸和蓝鲸的 20 Hz 呼叫，并应用该方法在 LSLS 的 14 个陆上地震仪上建立长鳍和蓝鲸检测目录，超过大约4年的时间。生成的目录包含超过 600 000 条长须鲸的叫声和近 60 000 条蓝鲸的叫声。一个以上的地震仪很少能检测到单独的呼叫。陆上记录的长须鲸叫声通常由多个地震阶段组成，以~2 序列到达。陆上地震仪为监测须鲸提供了宝贵的、以前未使用的数据源。然而，在 LSLS 中，目前的地震仪网络无法单独提供高精度的鲸鱼跟踪，因此需要更密集地部署陆上和/或海上地震仪。以前未使用的用于监测须鲸的数据源。然而，在 LSLS 中，目前的地震仪网络无法单独提供高精度的鲸鱼跟踪，因此需要更密集地部署陆上和/或海上地震仪。以前未使用的用于监测须鲸的数据源。然而，在 LSLS 中，目前的地震仪网络无法单独提供高精度的鲸鱼跟踪，因此需要更密集地部署陆上和/或海上地震仪。