Mapping the potential distribution of frozen ground in Tucarroya (Monte Perdido Massif, the Pyrenees)

• Published in: Cuadernos de Investigación Geográfica
• Main Authors: Serrano, E., Pisabarro Pérez, Alfonso, López Moreno, J.I., Gómez Lende, Manuel, Martín Moreno, R., Rico, I.
• Other Authors: Analisis Geografico Regional, Facultad de Filosofia y Letras
• Format: Article in Journal/Newspaper
• Language: English
• Published: Universidad de la Rioja 2020
• Subjects: Geografía; Frozen ground; Permafrost; Mapping; Pyrenees; 2505.07 Geografía Física; permafrost
• Online Access: https://hdl.handle.net/10612/22157; https://doi.org/10.18172/CIG.4414

[EN] This paper shows the creation of a map of frozen ground potential for the Tucarroya valley in Ordesa National Park. To create this map, it was necessary to combine the identified landforms associated to the presence of frozen ground by fieldwork, ground temperature data continuously recorded during two years by automatic loggers, a Basal Temperature of Snow (BTS) survey, and predictor variables derived from a high resolution Digital Elevation Model (DEM). Four environments have been differentiated: unfrozen ground, seasonal frozen ground, possible permafrost and probable permafrost. The map confirms a very limited variety and extension of permafrost, above 2700 m a.s.l. on gentle and shadowed slopes. Seasonal frozen ground is the most common thermal regime, as it can be developed above 2500 m a.s.l. Snow-pack duration and thickness tightly control the duration of frozen ground and the freezing-thawing cycles. Frost activity and unfrozen ground is restricted from 2570 to 2750 m a.s.l. SI This research was funded by I+D+I projects CGL2015-68144-R, Hidroibernieve- CGL2017-82216-R (MINECO of Spanish government-FEDER) and Geoparque Sobrarbe-Comarca del Sobrabe (R- ADM15/57).