Remote sensing is the art and science of detecting information about an object

Remote sensing is the art and science of detecting information about an object, area or phenomenon without making physical contact with it.
The process can be done by capturing images from satellites, aerial photography, sonar system… The main uses of remotely sensed images are related to studying and analyzing the complex water resources systems.
Three quarters of the Earth’s surface is covered with water, mainly in oceans and seas (97.5% of world’s water supply), rivers, lakes, snow & glaciers (only 2.5% of world’s water). Remote sensing techniques and Earth observation data are used to understand the dynamics of many important resources like ground water, water quantity, water chemistry, climate change, surface water… using mapping tools.
Water resources’ application sensors cover a broad range of the electromagnetic spectrum. Using remote sensing techniques we can measure hydrological variables indirectly and should be related to the electromagnetic variables.

1.2- Aim of the project
Our project presents different applications of remote sensing technologies in water resources which are summarized under 3 main classes: water resources mapping, estimation of the hydro-meteorological state variables and fluxes and water resources management.