IANIGLA   20881
INSTITUTO ARGENTINO DE NIVOLOGIA, GLACIOLOGIA Y CIENCIAS AMBIENTALES
Unidad Ejecutora - UE
capítulos de libros
Título:
Inventory and Monitoring of Cryoforms and Cryogenic Processes in the Central Andes of Mendoza, Argentina: Birth and Extinction of a Periglacial Lake
Autor/es:
TROMBOTTO, DARÍO; LENZANO, MARÍA GABRIELA; CASTRO, MARIANO
Libro:
Tenth International Conference on Permafrost
Editorial:
Institute of Northern Engineering. University of Alaska Fairbanks
Referencias:
Año: 2012; p. 419 - 424
Resumen:
New inventories of rockglaciers in the cordillera del Tigre and the Cordon del Plata were made with manual digitizing of ASTER images and interpretation of photographs. The Cordillera del Tigre (NW Mendoza) has a surface with possible permafrost of approximately 1171 km 2 , and the Cordón del Plata has 956 km 2 . The lower permafrost limit was estimated to be 3600 m a.s.l. In the Cordillera del Tigre, 182 new active rock glaciers were counted, with an average surface of 0.35 km 2 and an area of about 64 km 2 . The largest rock glacier comprises a surface of 2.37 km 2 . Rock glaciers appear preferably when their detritic and nival feeding zone has a southerly orientation. The lower limit of uncovered ice lies at approximately 4300 m a.s.l. A build-up of the creeping permafrost generated a lake of approximately 7.9 ha on one of the tributaries of the Mendoza River.
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