The effect of particulate organic content on the remote sensing of marine suspended sediments
The effect of particulate organic content on the remote sensing of marine suspended sediments
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DOI：
10.1016/j.rse.2014.01.005
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发表时间：
2014-03
影响因子：
13.5
通讯作者：
D. Bowers;P. Hill;K. Braithwaite
中科院分区：
文献类型：
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作者：
D. Bowers;P. Hill;K. Braithwaite
我们报告之间的关系，在665 nm处的后向散射系数和悬浮颗粒的横截面积在爱尔兰海，凯尔特海和英吉利海峡。后向散射系数对颗粒面积的曲线图显示了两种不同的趋势：一种是矿物含量高的颗粒，另一种是矿物含量低的颗粒。每单位颗粒面积的后向散射（有效后向散射效率，Qbb）显示出在0.35 <MSS/TSS< 0.91的范围内对矿物与总悬浮固体的比率（MSS/TSS）的连续非线性依赖性。该关系可以用指数函数表示：Qbb= 0.000087 exp（6.9MSS/TSS），这解释了后向散射效率中观察到的方差的62%。粒径的变化对Qbb无显著影响。随着MSS/TSS比值的增加，后向散射比（bb/B）也增加。海洋悬浮沉积物的定量遥感的含义是，特定质量的后向散射系数，bb* 取决于每单位质量的颗粒面积乘以一个函数，这取决于矿物含量的颗粒。
We report on the relationship between the backscattering coefficient at 665 nm and the cross sectional area of particles in suspension in the Irish Sea, Celtic Sea and English Channel. A plot of the backscattering coefficient against particle area shows two distinct trends: one for particles with high mineral content and another for particles with low mineral content. Backscattering per unit particle area (effective backscattering efficiency,Qbb) shows a continuous non-linear dependence on the ratio of mineral to total suspended solids (MSS/TSS) over the range 0.35 <MSS/TSS< 0.91. The relationship can be represented by an exponential function:Qbb= 0.000087 exp(6.9MSS/TSS), which explains 62% of the observed variance in backscattering efficiency. Changes in particle size have no significant influence onQbb. As theMSS/TSSratio increases, the backscattering ratio (bb/b) also increases. The implication for the quantitative remote sensing of marine suspended sediments is that the mass specific backscattering coefficient,bb*depends on the particle area per unit mass multiplied by a function which depends on the mineral content of the particles.