Monitoring estuarine water quality using satellite imagery. The Mondego river estuary (Portugal) as a case study
作者： V.M. Mantas , A.J.S.C. Pereira , J. Neto , J. Patrício , J.C. Marques
DOI: 10.1016/J.OCECOAMAN.2011.06.013
关键词:
摘要: Abstract Monitoring water bodies is a task not only scientifically relevant but also legally binding in several countries (e.g. Water Framework Directive and the European Marine Strategy Directive). Ecosystem health assessment projects are greatly enhanced by use of remote sensing technologies. In present study, small Portuguese estuary (Mondego river estuary), was used as case study to assess feasibility measuring key indicators using satellite imagery. The MODIS land/cloud bands evaluate Secchi Disk Depth (SD) addressed. ratio reflectance at 469 555 nm best predictor for this parameter (R2 = 0.9678; p Landsat-7 ETM+ was, turn, estimate Chlorophyll-a concentration (OC), Turbidity Salinity. Reflectance values were compared with concurrent situ data recorded an automatic sampling buoy. develop local color index, which takes advantage relative differences three visible range spectrum. Overall, yielded robust estimates selected indicators, favoring its future operational area.
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