Southern American Lakes. Insights through diverse Space Techniques: Satellite Imagery, Radar and Laser Altimetry
Abarca del Rio, R.1; Crétaux, JF2; Calmant, S.2; Berge, M.2; Cazenave, A2; Zambrano, M1; 1DGEO/UDEC; 2Legos

In order to better understand the hydrologic cycle over some hydrological basins in South America, we investigate the variability over some lakes there by different space techniques. These lakes are separated into 4 different groups, which are investigated simultaneously. These groups are not only representative of different climatic regimes but also represent different local conditions. The first group is geographically named as “semi enclosed endorheic basin of the Altiplano” or officially known as TPDS (Titicaca – Poopo – Desaguadero - Salar del Coipasa) system which extends north to south over more than 1000 kilometers. The second group of lakes are located along the western side of Los Andes Cordillera, i.e., along Chile and understands lakes alike Villarica, Panguipugui, Ranco, Rupanco, Todos los Santos, Llanquihue, which have been visited and gps collocated during a mission in 2005. The third group is located over the western side of Los Andes Cordillera, and takes into account lakes alike Nahuelhuapi, General Carrera, San Martin, Viedma, Argentino, etc. The fourth groups of lakes are those located north of the equator, alike Lakes Maracaibo and Nicaragua. We will show here some examples of how a combination of different and complementary space techniques applied on some lakes of these groups, which for the most are for the first time investigated through these space techniques, gives information on their hydrological cycle and interesting clues on its related climatic variability.


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