Observing Finescale Oceanic Velocity Structure with an Autonomous Nortek Acoustic Doppler Current Profiler.
Observing Finescale Oceanic Velocity Structure with an Autonomous Nortek Acoustic Doppler Current Profiler.
复制标题
使用自主 Nortek 声学多普勒电流剖面仪观察精细海洋速度结构。
DOI：
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发表时间：
2017
影响因子：
2.2
通讯作者：
S. Nylund
中科院分区：
文献类型：
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作者：
A. Shcherbina;E. D’Asaro;S. Nylund
本文介绍了在海洋表面边界层内厘米级速度结构的长期有针对性的观测仪器和技术，使自主平台和独立的脉冲相干声学多普勒海流剖面仪（ADCP）的能力的最新发展成为可能。特别注意的算法的模糊度的解决（“展开”）的脉冲相干多普勒速度测量。使用新的Nortek Signature1000 ADCP安装在拉格朗日浮子上，证明了该技术，该组合能够在最近的一些研究中观察海洋湍流。与ADCP设置有关的测量速度的统计不确定性也进行了评估。所描述的技术和分析应广泛适用于其他自主和拖曳应用的脉冲相干ADCP。
This paper describes the instrumentation and techniques for long-term targeted observation of the centimeter-scale velocity structure within the oceanic surface boundary layer, made possible by the recent developments in capabilities of autonomous platforms and self-contained pulse-coherent acoustic Doppler current profilers (ADCPs). Particular attention is paid to the algorithms of ambiguity resolution ("unwrapping") of pulse-coherent Doppler velocity measurements. The techniques are demonstrated using the new Nortek Signature1000 ADCP mounted on a Lagrangian float, a combination shown to be capable of observing ocean turbulence in a number of recent studies. Statistical uncertainty of the measured velocities in relation to the ADCP setup is also evaluated. Described techniques and analyses should be broadly applicable to other autonomous and towed applications of pulse-coherent ADCPs.