Sensores remotos aplicados al inventario de glaciares descubiertos, cubiertos, de escombros y crioformas en la subcuenca del Río Pachon y subcuenca del Río Mercedario. Provincia de San Juan. Argentina

CRISTIAN VILLARROEL

Simposio; XVI Simpósio Brasileiro de Sensoriamento Remoto; 2013

Rock glaciers can be classified by origin into glacigenic and cryogenic, and according to their activity in active and inactive. The survey of discovered glaciers was carried out by supervised classification method for regions or objects with Spring software. Covered glaciers, rock glaciers and crioforms were relieved through the visual analysis of Landsat, Terra and CBERS 2B satellite image. The processing of the digital elevation model was made using SAGA GIS software; furthermore was generated the drainage network and sub basins. All results were put into a GIS project, in this case Kosmo software was used, and the area was calculated for each of the polygons of different types of glaciers and crioforms. Pachon river sub-basin have a total of 136 bodies of active and inactive cryogenic rock glaciers corresponding to 15.51 km2 and 31 bodies of protalus rampart crioforms type corresponding to 0.6 km2. Mercedario River sub-basin contained 63 bodies of active and inactive cryogenic rock glaciers corresponding to 7.93 km2, 8 bodies of glacigenic covered glaciers corresponding to 7.15 km2, 17 bodies of protalus rampart crioformas type corresponding to 0.44 km2 and 47 bodies of discovered glaciers corresponding to 21.57 km2. Knowledge of all types of glaciers and crioforms from glacial and periglacial environment is of vital importance for strategic water reserves in the regions that are placed.