Skip all navigation and jump to content Jump to site navigation
NASA Logo - Goddard Space Flight Center

+ NASA Homepage

    
Goddard Space Flight Center
About MODIS News Data Tools /images2 Science Team Science Team Science Team

   + Home
ABOUT MODIS
MODIS Publications Link
MODIS Presentations Link
MODIS Biographies Link
MODIS Science Team Meetings Link
 

 

 

Mantas, VM; Pereira, AJSC; Neto, J; Patricio, J; Marques, JC (2013). Monitoring estuarine water quality using satellite imagery. The Mondego river estuary (Portugal) as a case study. OCEAN & COASTAL MANAGEMENT, 72, 13-21.

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 Framework Directive). Ecosystem health assessment projects are greatly enhanced by the use of remote sensing technologies. In the present study, a small Portuguese estuary (Mondego river estuary), was used as a case study to assess the feasibility of measuring several key indicators using satellite imagery. The feasibility of using MODIS land/cloud bands to evaluate Secchi Disk Depth (SD) was addressed. The ratio of remote sensing reflectance at 469 and 555 nm was the best predictor for this parameter (R-2 = 0.9678; p < 0.05). Landsat-7 ETM+ was, in turn, used to estimate Chlorophyll-a concentration (OC), Turbidity and Salinity. Reflectance values were compared with concurrent in situ data recorded by an automatic sampling buoy. ETM-F data was also used to develop a local water color index, which takes advantage of the relative differences in the reflectance values of the three bands in the visible range of the spectrum. Overall, remote sensing data yielded robust estimates of the selected indicators, favoring its future operational use in the study area. (C) 2011 Elsevier Ltd. All rights reserved.

DOI:

ISSN:
0964-5691

FirstGov logo Privacy Policy and Important Notices NASA logo

Curator: Brandon Maccherone
NASA Official: Shannell Frazier

NASA Home Page Goddard Space Flight Center Home Page