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HICO, Hyperion and MERIS have already demonstrated the capabilities of hyperspectral sensors to gather information on optical properties in inland waters. With the advent of Sentinel-2, Sentinel-3, EnMap, PRISMA and HyspIRI we expect that application of remote sensing techniques for inland water quality assessment will progress even more. Some clear advantages rely on: 1) improved spatial resolution...
The objective of this study is to map Cyanobacteria Bloom in brackish Lakes Shinji and Nakaumi using satellite data such as MODIS. The 10 satellite sensor data such as QuickBird, ALOS AVNIR-2, and MODIS from November to December, 2010 were collected in these lakes. Cyanobacteria bloom was distinguished by viewing from satellite data. Furthermore, it was judged quantitatively by Rayleigh corrected...
Microcystins (MCs), produced by cyanobacteria(blue-green algae), are one of the most hazardous hepatotoxic toxins found in natural environment. Under the background of algae removal and growth inhibition by ultrasonic irradiation and microcystins degradation by Ultraviolet(UV) radiation, experiments were conducted to investigate the degradation of microcystins in order to evaluate the efficiency and...
This paper uses statistic and nonlinear regression approaches to describe and evaluate the changes of the cyanobacteria growth in the Guishui lake in Beijing remote suburb. The results show that high ratios of TN/TP (>20), and low concentrations of TP (<;0.3 mg/L), and COD (<;30 mg/L) may constrain the growths of the cyanobacteria in the lake. The cyanobacteria growths are positively related...
During the last two years, data sets from three groups and twelve sampling points were used to investigate historical changes between the concentration of the cyanobacteria and the concentrations of total nitrogen (TN), total phosphorus (TP), TN/TP, chemical oxygen dawdling (COD), NO3-, pH, and Chl-a in a shallow temperate zone lake (Guishui Lake, Beijing). The aim of this paper was to evaluate changes...
After water storage of Laohutan reservoir, nitrogen (TN), total phosphorus (TP) and ammonia nitrogen (NH3-N) are the main pollutants. In the first month of water collection, the vertical distribution of TN, TP and NH3-N concentrations is increased distinctly from the surface layer to the bottom layer. It shows that the reservoir water quality is affected by pollutants released from submersed soil...
Monthly investigation is executed during April 2006 to May 2007, focusing on the abundance and composition of phytoplankton in a large (300 km2) shallow (mean depth 4.4 m) eutrophic lake (Lake Dianchi). The presence of phytoplankton in northern bay was the highest, while that in the southern part the lowest, and center part and northern part conditions represented an intermediate state between these...
Microcystines (MCs) are well known as its hepatotoxins produced by blooms of toxin cyanobacteria (blue-green algae) abundant in surface water used as drinking water resource and have drawn attention of environmentalists world over by the adverse health effects. The affects and the reaction character of ClO2 removing MC-RR were studied, and the results show that ClO2 can remove MC-RR effectively. When...
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