Current measurements in the open sea are generally acquired by Acoustic Doppler Current Profilers (ADCPs). In the case of ADCPs mounted on spar buoy, current profiles require to be post-processed, to properly take into account the buoy influence: in fact, ADCP compass may reflect alterations induced by the metal structure of the buoy and apparent currents can occur due to the large displacement of the platform. Uncertainty analysis is finally required to properly consider both these effects and to compute robust velocity estimates. A new methodology is tested for a measurement station in the Ligurian Sea, where an ADCP was mounted on the surface buoy of the W1-M3A (Western 1 Mediterranean Moored Multisensor Array) oceanographic observatory, facing upwards at the depth of about 40 m. Marine current numerical models and historical data in the area have been used as a basis for comparison to test the consistency of the proposed method. A very good agreement is obtained. Only minor discrepancies are reported (e.g., monthly averages from the reference model slightly underestimate the west-east current component along the entire profile), but, in general, the application of the proposed methodology ensures that the spar buoy-mounted ADCP system is able to provide reliable measurements for oceanographic studies and validation of 3D hydrodynamic models.

中文翻译：

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晶石浮标安装的ADCP测量站的改进的电流估算：以利古里亚海为例

公海中的电流测量通常通过声学多普勒电流剖面仪（ADCP）进行。如果将ADCP安装在翼形浮标上，则需要对电流曲线进行后处理，以适当考虑浮标的影响：实际上，ADCP指南针可能反映了浮标金属结构引起的变化，并且可能会出现明显的电流平台的大位移。最后需要进行不确定性分析，以适当考虑这两种影响并计算可靠的速度估算值。一种新的方法已在利古里亚海的一个测量站进行了测试，ADCP安装在W1-M3A（西方1地中海系泊多传感器阵列）海洋观测台的表面浮标上，朝上约40 m的深度。该地区的海流数值模型和历史数据已被用作比较的基础，以测试所提出方法的一致性。获得了很好的协议。仅报告了较小的差异（例如，参考模型的月平均水平略低估了整个剖面上的西-东洋流分量），但是，总体而言，所建议方法的应用确保了安装在浮标上的ADCP系统能够为海洋学研究和3D水动力模型的验证提供可靠的测量结果。