MULTITEMPORAL PRINCIPAL COMPONENT ANALYSIS OF SPECTRAL AND SPATIAL FEATURES OF VENICE LAGOON

1This study focuses on a multitemporal spectral analysis of morphologi c features of the Venice Lagoon. Principal Component Analysis, applied in a multidate merged rotation to standardized visible and infrared L andsat Thematic Mapper spectral bands, has allowed discrimination of d ifferences in spatial distribution and spectral characteristics of the observed features. A comparative analysis has been carried out on the derived PC based on visual and statistical interpretation. Near- and medium-infrared bands are revealed to be suitable to return significan t information in a very shallow water environment and under particular weather conditions. A map of part of the Northern Lagoon has been pro duced out of the first Principal Component of multitemporal TM4s.