Salinity sensors on seals: use of marine predators to carry CTD data loggers
Salinity sensors on seals: use of marine predators to carry CTD data loggers
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DOI：
10.1016/s0967-0637(03)00055-4
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发表时间：
2003-07-01
影响因子：
2.4
通讯作者：
Boyd, IL
中科院分区：
文献类型：
--
作者：
Hooker, SK;Boyd, IL
潜水的海洋捕食者已被用来收集海洋温度数据，但盐度测量此前尚未被纳入捕食者携带的数据记录仪中。在这里，我们展示了新型电导率、温度和深度 (CTD) 数据记录仪的初始校准和现场试验数据，该数据记录仪与卫星定位发射机一起使用，以提供三维海洋学信息。这提供了类似于船上部署的波动海洋记录仪收集的 CTD 数据。这些单元的校准测试显示了由于材料与标签的接近而引起的近场效应，但表明所产生的数据偏移可以通过事后校准来消除。该系统的现场测试是在南乔治亚州伯德岛对 16 只雌性南极海豹（Arctocephalus gelella）进行的。这些结果与标准船基调查技术发现的结果相匹配，但表明在南乔治亚州北部发现的两个水团的结构和位置存在时间变化。总的来说，这项初步的概念验证工作令人鼓舞：这项技术的未来改进可能会为海洋学家和生物学家提供额外的数据源。 (C) 2003 Elsevier Science Ltd. 保留所有权利。
Diving marine predators have been used to collect data on ocean temperature, but salinity measurements have not previously been incorporated into predator-borne data loggers. Here we present data on initial calibration and field trials of a new conductivity, temperature and depth (CTD) data logger used alongside a satellite-positioning transmitter to provide three-dimensional oceanographic information. This provides CTD data analogous to that collected by a ship-deployed undulating oceanographic recorder. Calibration tests of these units showed a near-field effect caused by the proximity of material to the tag, but demonstrate that the resulting data offset can be removed by post hoc calibration. Field tests of the system were conducted on 16 female Antarctic fur seals (Arctocephalus gazella) at Bird Island, South Georgia. These results matched those found by standard ship-based survey techniques, but suggest temporal variability in the structure and location of the two water masses found to the north of South Georgia. Overall, this initial proof-of-concept work is encouraging,: future refinement of this technique is likely to provide an additional data source for both oceanographers and biologists. (C) 2003 Elsevier Science Ltd. All rights reserved.