Aplicaciones de la teledetección en hidrología

Abstract

In this paper, some of the remote sensing applications on hydrological ground have been synthesized. Instances of different scales (global, regional and local), with different sensors of different spatial, temporal and spectral resolutions have been chosen, in order to know the amplitude of the field study given by satellite data and their utility in the study of water extensions. Satellite images, available since the early seventies allow us to carry out a multitemporal study of the areas and to analyse the changes that have taken place there for the last thirty years. The high absorption of electromagnetic energy showed by water enables us the precise mapping of wet areas and to know some of their main variables: depth, salinity, presence of hydrohalophytic vegetation, contamination, etc