IANIGLA   20881
INSTITUTO ARGENTINO DE NIVOLOGIA, GLACIOLOGIA Y CIENCIAS AMBIENTALES
Unidad Ejecutora - UE
capítulos de libros
Título:
Mountain Permafrost Distribution in the Andes of Chubut (Argentina) based on a Statistical Model
Autor/es:
RUIZ, LUCAS.; TROMBOTTO, DARIO.
Libro:
Proceedings of the Tenth International Conference on Permafrost
Editorial:
International Permafrost Association
Referencias:
Año: 2012;
Resumen:
An important debate
generated by a new federal regulation in Argentina, places mountain permafrost
distribution and the potential of ground ice for water storage in the center of
the scene. The main problem is related to the lack of field data on a regional
scale. With the aim to solve this problem, in the Precordillera of Chubut,
Argentina, a statistical model of mountain permafrost distribution based on BTS
(Bottom Temperature of Snow cover) was presented. A multiple linear regression
analysis was used to reproduce BTS distribution with elevation and potential
short-wave radiation as independent variables. Then a threshold classification
was applied to BTS distribution in order to discriminate between Probable,
Possible and No Possible Permafrost zones. The model pointed out that, mountain
permafrost, related with high elevation south facing or highly cast shadow
zone, may exist. Although the model was statistically significant, it is
necessary to confirm the presence of permafrost by ground truthing.