ON THE USE OF THE ACOUSTIC DOPPLER CURRENT PROFILER TO MEASURE ZOOPLANKTON ABUNDANCE
ON THE USE OF THE ACOUSTIC DOPPLER CURRENT PROFILER TO MEASURE ZOOPLANKTON ABUNDANCE
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DOI：
10.1016/0198-0149(89)90047-2
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发表时间：
1989-03-01
期刊：
影响因子：
--
通讯作者：
SMITH, SL
中科院分区：
文献类型：
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作者：
FLAGG, CN;SMITH, SL
进行了一项试点相互校准研究，以评估 RD Instruments 的 307 kHz 声学多普勒电流剖面仪测量浮游动物丰度的能力。相互校准是在新英格兰[美国]大陆架边缘 150 m 水中部署的底部安装声学剖面仪和使用拖曳在剖面仪附近的 MOCNESS 网系统收集的浮游动物样本之间进行的。研究结果表明，反向散射信号强度与浮游动物总体积、横截面积和干重之间存在显着相关性。根据相关性，似乎可以将浮游动物生物量预测为大约.+-。 15 mg m-3 在我们的数据所涵盖的丰度范围内，在时间和空间上具有巨大的分辨率。然而，处理声学数据的经验清楚地表明，只有在仔细注意传感器/电子设备的校准以及各个轮廓仪光束产生的数据的质量之后，才有可能获得显着的结果。
A pilot intercalibration study was performed to evaluate the ability of RD Instruments'' 307 kHz acoustic Doppler current profiler to measure zooplankton abundance. The intercalibration was between a bottom-mounted acoustic profiler deployed in 150 m of water at the edge of the New England [USA] shelf and zooplankton samples collected with a MOCNESS net system which was towed near the profiler. The results of the study showed significant correlations between backscattered signal intensity and total zooplankton volume, cross-sectional area, and dry weight. From the correlations it appears to be possible to predict zooplankton biomass to approximately .+-. 15 mg m-3 over the range of abundance spanned by our data with enormous resolution in time and space. However, experience with processing the acoustic data clearly indicates that significant results are only possible after careful attention to the calibration of the transducers/electronics and to the quality of the data produced by the individual profiler beams.