Journal
ENVIRONMENTAL MONITORING AND ASSESSMENT
Volume 157, Issue 1-4, Pages 375-382Publisher
SPRINGER
DOI: 10.1007/s10661-008-0542-9
Keywords
Chl-a; Lake Beysehir; Terra ASTER; Trophic state; Remotely sensed data; Water quality monitoring
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Funding
- The Scientific and Technological Research Council of Turkey (TUBITAK) [105Y086]
- Selcuk University Scientific Research [2004/102]
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This paper presents an application of water quality mapping through real-time satellite and ground data. The Lake Beysehir which is the largest freshwater lake and drinking water reservoir in Turkey was selected as the study area. Terra ASTER satellite image is used as remote sensing data source for water quality mapping in addition to simultaneously performed in-situ measurements. Ground data is collected simultaneously with the ASTER overpass on June 09, 2005 over the Lake Beysehir. The spatial distribution map is developed by using multiple regression (MR) technique for water quality parameter, which is chlorophyll-a (chl-a). The results indicate that simultaneous ground and satellite remote sensing data are highly correlated (R (2) > 0.86). In the image processing step, geometric correction, image filtering and development of water quality map procedures are performed with the ERDAS Imagine and ArcGIS 9.0 software. The trophic status of Lake Beysehir is considered to be oligotrophic with an average 1.55 A mu g/l chl-a concentration.
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