水体颗粒后向散射系数测量一致性对比实验研究

张翾; 何贤强; 龚芳; 朱乾坤

doi:10.3969/j.issn.1001-909X.2021.01.001

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海洋学研究 ›› 2021, Vol. 39 ›› Issue (1) : 1-8. DOI: 10.3969/j.issn.1001-909X.2021.01.001

研究论文

水体颗粒后向散射系数测量一致性对比实验研究

张翾^1,2,3, 何贤强^*1,2,3, 龚芳^2,3, 朱乾坤^2,3

作者信息 +

Experimental study on the consistency of measurements of water particulate backscattering coefficient

ZHANG Xuan^1,2,3, HE Xianqiang^*1,2,3, GONG Fang^2,3, ZHU Qiankun^2,3

Author information +

文章历史 +

摘要

颗粒后向散射系数是水体最重要的固有光学参量之一,也是海洋水色卫星遥感的核心参数。现场准确测量水体颗粒后向散射数据,对于水色遥感模型构建以及水色遥感产品真实性检验至关重要。本文针对常用的3种水体颗粒后向散射系数原位测量仪(HydroScat6,VSF3和BB9),通过比测实验,对三者测量结果的一致性进行了比较分析。结果表明,在清洁水体中3种仪器对颗粒后向散射系数测量具有较好的一致性;但在浑浊水体中,HydroScat6和BB9测量值会比VSF3高,三者偏差显著增大。同时,数值模拟和实验结果均表明,颗粒形状会对测量结果产生影响,3种仪器对球形颗粒的后向散射系数测量结果的一致性显著好于野外颗粒结果。

Abstract

The backscattering coefficient of particles is one of the most important inherent optical parameters of water body, and also is the core parameter of ocean color remote sensing. It is very important to measure the backscattering coefficient data of particles in water accurately in-situ for the construction of water color remote sensing model and the authenticity test of water color remote sensing products. In this study, the consistency of these three kinds of in-situ instruments(HydroScat6, VSF3 and BB9) for measuring backscattering coefficient of water particles were compared and analyzed. The results show that the measurements by these three kinds of instruments have good consistency in clean water, but in the turbid water, the measurements of HydroScat6 and BB9 are higher than those of VSF3, and their deviations are significantly increased. Based on numerical simulations and laboratory measurements, it is found that the shapes of particles affect the consistency of measurements by the three instruments, and the consistency is better for spherical particles than that of field particles.

导出引用

张翾, 何贤强, 龚芳, 朱乾坤. 水体颗粒后向散射系数测量一致性对比实验研究[J]. 海洋学研究. 2021, 39(1): 1-8 https://doi.org/10.3969/j.issn.1001-909X.2021.01.001

ZHANG Xuan, HE Xianqiang, GONG Fang, ZHU Qiankun. Experimental study on the consistency of measurements of water particulate backscattering coefficient[J]. Journal of Marine Sciences. 2021, 39(1): 1-8 https://doi.org/10.3969/j.issn.1001-909X.2021.01.001

中图分类号： P715 P733.3

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