de Barcelona. España.

The Spanish glaciers (the Pyrenees, Sierra Nevada “Corral del Veleta”), as with the glaciers in the rest of the world, have been losing surface area and volume since the beginning of the 20 th century. While there are numerous studies of the Alpine glaciers, there isn’t even an approximate cartography or small scale of the glaciers (white or rocks) in Spain, much less an exhaustive relative analysis of their dynamics. The particularity of the rocks glaciers is their sensibility to environmental changes. By means of the analysis of their dynamics, the influence of possible climatic change can be known. This was carried out by a group of researchers in 1991, by studying the dynamics of the rock glacier of the Argualas (in the Central Pyrenees). Since then, six geodetics observations have been made, evaluating its dynamics with a precision of ± 4 cm, correlating the movements with different climatic parameters (precipitation and temperature). In 2000, photogrammetrics procedures were applied, obtaining the position of the “control points ” by means of predictive techniques and detailed cartography for the rock glacier in the Argualas with a semi-metric camera. In 2001, these study techniques were implemented in the southern most glacier in Europe: “Corral del Veleta”. Four field expeditions have been made there, (2001, 2002, 2003 and 2004) employing geodetics techniques to analyse its dynamic and calculate the coordinates of the “control points ” using photogrammetry. In this way, the glacier has been mapped in detail, superimposing the dynamics of the “control points ” in different expeditions. In order to do cartography of the glaciers, conventional photogrammetry (metric camera and normal shots) wasn’t employed