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- W2068598909 abstract "Satellite products are utilized for numerous environmental applications nowadays including water quality monitoring and assessment. Various techniques have been developed during the last two decades for estimating environmental parameters such as chlorophyll-a and turbidity. In the context of this research effort, various algorithms have been developed to retrieve chlorophyll-a and turbidity values in Evros river, Greece, using satellite imageries of Landsat 5 TM. These imageries were obtained from United States Geological Survey (USGS) and covered the summer periods of 2008-2009 for chlorophyll-a and 2008-2011 for turbidity, respectively. Field data of relevant dates have been used for the development and validation of the remote sensing retrieval algorithms (separate datasets for the algorithm development and the validation process). The best applicable algorithms, using both the point sampling values and the remotely sensed data under different regression models, proved to be the ratio of TM4 /TM3 bands and logarithmical ratio of TM1/TM2 bands for the estimation of chlorophyll-a concentration and turbidity values, respectively. This process resulted in the generation of maps showing the distribution of chlorophyll-a and turbidity along the river. Validation of the selected algorithms was also conducted by comparing the estimated chl-a concentrations and turbidity values with the corresponding in-situ measurements of the validation datasets. The results indicated a relatively high coefficient of determination (R2), fact that characterizes the satellite developed algorithms reliable and efficient to monitor the chlorophyll-a concentration and turbidity in the particular riverine system." @default.
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- W2068598909 date "2013-08-05" @default.
- W2068598909 modified "2023-10-14" @default.
- W2068598909 title "Monitoring of chlorophyll-a and turbidity in Evros River (Greece) using Landsat imagery" @default.
- W2068598909 doi "https://doi.org/10.1117/12.2027047" @default.
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