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首页> 外文期刊>Continental Shelf Research: A Companion Journal to Deep-Sea Research and Progress in Oceanography >The accuracy of acoustic vertical velocity measurements: instrument biases and the effect of Zooplankton migration
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The accuracy of acoustic vertical velocity measurements: instrument biases and the effect of Zooplankton migration

机译：垂直声速测量的准确性：仪器偏差和浮游动物迁移的影响

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摘要

Doppler velocity and backscatter intensity records from an energetic estuarine flow in which backscatter reveal a significant diel migration of zooplankton are used to examine the reliability of the vertical velocity measurements. During periods when zooplankton were not migrating, the measured value is shown to be an accurate representation of the actual vertical velocity. At depths and times of active migration, with large increases in backscatter intensity, it is expected that vertical velocity measurements should be strongly affected by zooplankton motion. This does not appear to be the case, however, as the effect is much smaller than expected at sunset, and non-existent at sunrise. (C) 2004 Elsevier Ltd. All rights reserved.
机译：来自高能河口流的多普勒速度和后向散射强度记录（其中后向散射显示浮游动物有明显的狄尔迁移）被用来检验垂直速度测量的可靠性。在浮游动物未迁移的期间，测量值显示为实际垂直速度的准确表示。预期在活动迁移的深度和时间，后向散射强度会大大增加，浮游动物运动会强烈影响垂直速度的测量。但是，情况似乎并非如此，因为该效果远小于日落时的预期效果，而在日出时则不存在。 （C）2004 Elsevier Ltd.保留所有权利。

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