Ms. Pilar Casals-Carrasco Profile

Pilar Casals-Carrasco

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Proceedings Article | 13 February 2004 Paper

Spectral approach to model mountain lake catchment through landscape attributes

Pilar Casals-Carrasco, Jordi Catalan, Babu Madhavan, Valery Gond

Proceedings Volume 5239, (2004) https://doi.org/10.1117/12.509950

KEYWORDS: Earth observing sensors, Satellites, Satellite imaging, Vegetation, Geographic information systems, Reflectivity, Visualization, Spectral models, Spatial resolution, Ecosystems

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This study investigates the usefulness of satellite images for the study of moutain lake ecosystems and develops an effective approach to extract landscape features of interest for the determination of the lake characteristics. A methodology is proposed taking advantage of the unique spectral features of the land cover classes defined for this study along to their statistical information to determine different band pairs which contain key information for every class. The land cover classes are extracted separately from the selected pair of bands and the class images obtained are later added together in a final classified image. This methodology is applied to ten european sites representing glacial lake districts. The GIS ArcInfo is used to integrate the information obtained from the satellite images with the lake catchments thus the final classified images are merged with the lake catchment boundary vectors of the study areas therefore every pixel is assigned to the corresponding lake catchment. Moreover different patterns were observed in the spatial distribution of the land cover classes. These patterns were analyzed and classified as different lithological classes and every lake catchment was assigned to the corresponding lithological class. At the end every studied pixel has two attributes: land cover and lithology which together give a more detailed perception of the terrain.

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