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Analysis of Cross-Seasonal Spectral Response from Kettle Holes: Application of Remote Sensing Techniques for Chlorophyll Estimation
Institute for Geography and Geology, University of Greifswald, Friedrig-Ludwig-Jahn-Str. 16, D-17487 Greifswald, Germany
Faculty for Agricultural and Environmental Sciences, University of Rostock, Justus-von-Liebig-Weg 6, D-18059 Rostock, Germany
Institute for Aquatic Ecology, University of Rostock, Albert-Einstein-Straße 3, D-18051 Rostock, Germany
* Author to whom correspondence should be addressed.
Received: 25 September 2012; in revised form: 9 November 2012 / Accepted: 12 November 2012 / Published: 16 November 2012
Abstract: Kettle holes, small inland water bodies usually less than 1 ha in size, are subjected to pollution, drainage, and structural alteration by intensive land use practices. This study presents the analysis of spectral signatures from kettle holes based on in situ water sampling and reflectance measurements in application for chlorophyll estimation. Water samples and surface reflectance from kettle holes were collected from 6 ponds in 15 field campaigns (5 in 2007 and 10 in 2008), resulting in a total of 80 spectral datasets. We assessed the existing semi-empirical algorithms to determine chlorophyll content for different types of kettle holes using seasonal and cross-seasonal volume reflectance and derivative spectra. Based on this analysis and optical properties of water leaving reflectance from kettle holes, the following typology of the remote signal interpretation was proposed: Submerged vegetation, Phytoplankton dominated and Mixed type.
Keywords: small shallow waters; spectral signatures; chlorophyll concentration
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Igamberdiev, R.M.; Bill, R.; Schubert, H.; Lennartz, B. Analysis of Cross-Seasonal Spectral Response from Kettle Holes: Application of Remote Sensing Techniques for Chlorophyll Estimation. Remote Sens. 2012, 4, 3481-3500.
Igamberdiev RM, Bill R, Schubert H, Lennartz B. Analysis of Cross-Seasonal Spectral Response from Kettle Holes: Application of Remote Sensing Techniques for Chlorophyll Estimation. Remote Sensing. 2012; 4(11):3481-3500.
Igamberdiev, Rahmatulla M.; Bill, Ralf; Schubert, Hendrik; Lennartz, Bernd. 2012. "Analysis of Cross-Seasonal Spectral Response from Kettle Holes: Application of Remote Sensing Techniques for Chlorophyll Estimation." Remote Sens. 4, no. 11: 3481-3500.