Proceedings of the KSRS Conference (대한원격탐사학회:학술대회논문집)
- 2003.11a
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- Pages.667-669
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- 2003
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- 1226-9743(pISSN)
Bio-Optical Modeling of Laguna de Bay Waters and Applications to Lake Monitoring Using ASTER Data
- Paringit, EC. (Department of Mechanical and Environmental Informatics, Tokyo Institute of Technology) ;
- Nadaoka, K. (Department of Mechanical and Environmental Informatics, Tokyo Institute of Technology) ;
- Rubio, MCD (Department of Mechanical and Environmental Informatics, Tokyo Institute of Technology) ;
- Tamura, H. (Department of Mechanical and Environmental Informatics, Tokyo Institute of Technology) ;
- Blanco, Ariel C. (Department of Geodetic Engineering, University of the Philippines Diliman)
- Published : 2003.11.03
Abstract
A bio-optical model was developed specific for turbid and shallow waters. Special studies were carried out to estimate absorption and scattering properties as well as backscattering probability of suspended matter. The inversion of bio-optical model allows for direct retrieval of turbidity and chlorophyll- a from the visible-near infrared (VNIR) range sensor. Time-series satellite imagery from ASTER AM-1 sensor, were used to monitor the Laguna de Bay water quality condition. Spatial distribution of temperature for the lake was extracted from the thermal infrared (TIR) sensor. Corresponding field surveys were conducted to parameterize the bio -optical model. In-situ measurements include suspended particle and chlorophyll-a concentrations profiles from nephelometric devices and processing of water samples. Hyperspectral measurements were used to validate results of the bio -optical model and satellite- based estimation. This study provides a theoretical basis and a practical illustration of applying space- based measurements on an operational basis.