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首页> 外文学位 >Airborne hyperspectral remote detection of water quality parameters in the inland and coastal waters of the Cowichan watershed, British Columbia.
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Airborne hyperspectral remote detection of water quality parameters in the inland and coastal waters of the Cowichan watershed, British Columbia.

机译：机载高光谱远程检测不列颠哥伦比亚省Cowichan流域内陆和沿海水域的水质参数。

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摘要

Optical remote detection of surface water quality for open ocean waters has been ongoing since the 1960's. This method of detection is much more challenging, and not yet standard practice, for the more optically complex inland and coastal waters. A series of empirically developed models were built relating remote sensing reflectance (Rrs) for Compact Airborne Spectrographic Imagery (CASI), acquired over both inland and coastal water bodies of the Cowichan River watershed in British Columbia, to concurrently sampled water parameter concentrations. The models predict concentrations of chlorophyll- a and its pheopigments (as a proxy signal of phytoplankton), coloured dissolved organic matter (CDOM) and total suspended solids (TSS), using techniques including simple regression, step-wise regression, band ratios, derivative analysis, and fluorescence line height (FLH). The most statistically significant models were ultimately applied. Each of the models was found to be statistically significant, although confidence in the lake models and the CDOM model for the bay are limited due to potential chance correlations. The Chl- a and TSS models for Cowichan Bay were found to be acceptable based upon an understanding of the phenomenon being investigated. These two parameters were correlated to short blue wavelengths, where Chl-a is primarily correlated with absorption at 451nm and TSS with scattering at 462nm. These findings provide support of the application of the standard configuration of MERIS bands as the common configuration for further coastal and inland water remote sensing studies.
机译：自1960年代以来，就一直在进行光学遥测露天海水的水质。对于光学上较为复杂的内陆和沿海水域，这种检测方法更具挑战性，而且还不是标准做法。建立了一系列经验开发的模型，这些模型将紧凑型机载光谱成像（CASI）的遥感反射率（Rrs）与不列颠哥伦比亚省Cowichan河流域的内陆和沿海水域采集到的水参数浓度同时采样。该模型使用简单回归，逐步回归，带比例，导数等技术预测叶绿素及其色料（作为浮游植物的替代信号），有色溶解有机物（CDOM）和总悬浮固体（TSS）的浓度。分析和荧光线高度（FLH）。最终应用了最具有统计意义的模型。尽管由于潜在的机会相关性，对湖泊模型和海湾的CDOM模型的信心受到限制，但每个模型都具有统计学意义。基于对正在研究的现象的了解，发现Cowichan湾的Chla和TSS模型是可以接受的。这两个参数与短蓝光波长相关，其中Chl-a主要与451nm处的吸收有关，而TSS与462nm处的散射有关。这些发现为将MERIS频段的标准配置作为进一步的沿海和内陆水域遥感研究的通用配置提供了支持。

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