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3D tracking of foraging belugas from their clicks: Experiment from a coastal hydrophone array

机译：3D追踪白鹭的觅食行为：沿岸水听器阵列进行实验

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摘要

A simple passive acoustic monitoring (PAM) setup was used to localize and track beluga whales underwater in three dimensions (3D) in a fjord. In June 2009, beluga clicks were recorded from a cabled hydrophone array in a regularly frequented habitat in Eastern Canada. Beluga click energy was concentrated in the 30-50 kHz frequency band. The click trains detected on several hydrophones were localized from their time difference of arrivals. Cluster analysis linked localizations into tracks based on criteria of spatial and temporal proximity. At close ranges from the array, the localized click-train series allowed three-dimensional tracking of a beluga during its dive. Clicks within a train spanned a large range of durations, inter-click intervals, source levels and bandwidths. Buzzes sometimes terminated the trains. Repeated click packets were frequent. All click characteristics are consistent with oblique observations from the beam axis, and ordered variation of the source pattern during a train, likely resulting from a scan of angles from the beam axis, was observed before click trains indicated focusing of the echolocation clicks in one direction. The click-train series is interpreted as echolocation chasing for preys during a foraging dive. Results show that a simple PAM system can be configured to passively and effectively 3D track wild belugas and small odontocetes in their regularly frequented habitat.
机译：一个简单的无源声学监控（PAM）设置用于在峡湾中的三维（3D）水下定位和跟踪白鲸。 2009年6月，在加拿大东部一个经常有人居住的栖息地，通过电缆水听器阵列记录了白鲸的点击。白鲸的点击能量集中在30-50 kHz频段。根据到达时间的差异，在几个水听器上检测到的喀嗒声火车已经定位。聚类分析根据空间和时间接近度的标准将本地化链接到轨道中。在距离阵列很近的范围内，局部点击火车系列允许在潜水过程中对白鲸进行三维跟踪。火车中的点击涵盖了很大的持续时间，点击间隔，来源级别和带宽。嗡嗡声有时会终止火车。重复的点击数据包很频繁。所有的喀哒声特征都与从光束轴的倾斜观察结果一致，并且在喀哒声指示回声定位喀哒声集中在一个方向之前，已经观察到火车中源图案的有序变化（可能是由于与光束轴的角度扫描所致） 。喀哒声系列被解释为在觅食潜水期间追逐猎物的回声定位。结果表明，可以配置一个简单的PAM系统，以被动且有效地3D跟踪其经常出没的栖息地中的野生贝鲁加斯和小型犬齿动物。

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  • 来源
    《Applied Acoustics》 |2010年第11期|P.1050-1056|共7页
  • 作者

    Nathalie Roy; rnYvan Simard; rnCedric Gervaise;

  • 作者单位

    Maurice Lamontagne Institute, Fisheries and Oceans Canada, 850 Route de la Mer, P.O. Box 1000, Mont-Joli, Quebec, Canada G5H 3Z4;

    rnMaurice Lamontagne Institute, Fisheries and Oceans Canada, 850 Route de la Mer, P.O. Box 1000, Mont-Joli, Quebec, Canada G5H 3Z4 Institut des Sciences de la Mer, Universite du Quebec a Rimouski, 310 Allee des Ursulines, P.O. Box 3300, Rimouski, Quebec, Canada G5L 3A1;

    DTN, ENSIETA, 2 Rue Francois Vemy, 29200, Brest, France;

  • 收录信息 美国《科学引文索引》(SCI);美国《工程索引》(EI);
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    beluga; click; St. lawrence; passive acoustic monitoring (PAM); delphinapterus leucas; saguenay;

    机译：白鲸点击圣劳伦斯;无源声学监控（PAM）;翠雀萨格奈;

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