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首页> 外文期刊>Ocean Dynamics >Field observations of SPM using ADV, ADP, and OBS in a shallow estuarine system with low SPM concentration-Vitoria Bay, SE Brazil
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Field observations of SPM using ADV, ADP, and OBS in a shallow estuarine system with low SPM concentration-Vitoria Bay, SE Brazil

机译：在SPM浓度低的浅河口系统中使用ADV，ADP和OBS进行SPM的现场观测-巴西东南部的维多利亚湾

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摘要

The present study investigated direct and indirect methods using optical and acoustic instruments for the acquisition of information required to estimate the concentration of suspended particulate matter (SPM) in Vitoria Bay, a shallow estuarine system in SE Brazil. The aim was to calibrate and compare the use of different instruments (OBS, ADP, and ADV) to estimate SPM concentration in the water column and near the bed. Concentration was determined by correlating filtered water samples with the optical and acoustic measurements. In general, the methodology proved tenable for the chosen shallow estuarine environment with low SPM concentration (<60 mg/L). Pearson's coefficient ranged from 0.75 to 0.85, when correlating measurements taken at three sampled depths. Differences in the correlation coefficient values showed that calibration at three depths (near the bed, mid-water column, and near the surface) was more effective than for surface samples alone, even in shallow (~3 m deep) water. When calibration was attempted for concentration in the entire water column with samples at just one elevation, the correlation value was very low, thus increasing the error in estimating the SPM concentration.
机译：本研究调查了使用光学和声学仪器的直接和间接方法，以获取估计巴西东南部浅河口系统维多利亚海湾中悬浮颗粒物（SPM）浓度所需的信息。目的是校准和比较不同仪器（OBS，ADP和ADV）的使用，以估计水柱和床附近的SPM浓度。通过将过滤后的水样品与光学和声学测量值相关联来确定浓度。总的来说，该方法论证明对于SPM浓度低（<60 mg / L）的所选浅河口环境是可行的。当关联在三个采样深度进行的测量时，皮尔逊系数的范围从0.75到0.85。相关系数值的差异表明，即使在浅水（约3 m）中，在三个深度处（靠近床层，中层水柱以及靠近地面）的校准比单独使用表面样本更有效。当尝试对仅在一个高度处的样品中整个水柱中的浓度进行校准时，相关值非常低，因此增加了估算SPM浓度的误差。

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  • 来源
    《Ocean Dynamics》 |2011年第3期|p.273-283|共11页
  • 作者

    Marcel G. Moura; Valeria S. Quaresma; Alex C. Bastos; Paulo Veronez;

  • 作者单位

    Department of Oceanography and Ecology, Universidade Federal do Espirito Santo, Victoria Bay, Espirito Santo, Brazil;

    Department of Oceanography and Ecology, Universidade Federal do Espirito Santo, Victoria Bay, Espirito Santo, Brazil;

    Department of Oceanography and Ecology, Universidade Federal do Espirito Santo, Victoria Bay, Espirito Santo, Brazil;

    Department of Oceanography and Ecology, Universidade Federal do Espirito Santo, Victoria Bay, Espirito Santo, Brazil;

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  • 正文语种 eng
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  • 关键词

    SPM concentration; optical backscatter sensor; acoustic backscatter sensor; SPM calibration;

    机译：SPM浓度;光学反向散射传感器;声学反向散射传感器;SPM校准;

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