Montagne et haute montagne alpine, critères et limites morphologiques remarquables en haute montagne

Datos Bibliográficos

ID9264698
AutoresMichel Chardon (autor de correspondencia)
Año1984
Volumen72
Número2
Páginas213-224
Fecha de publicación1984-01-01
Peer ReviewedSí
Open AccessSí
TipoARTICLE
RevistaRevue de géographie alpine (JOURNAL)
Identificadores de la revistaISSN: 0035-1121 • E-ISSN: 1760-7426
EditorialPERSEE Program (PUBLISHER)
DOI10.3406/rga.1984.2565
OpenAlexW1972173642
IdiomaFR
Citas recibidas5

First it is recorded that the concept of mountain includes those of volume and altitude. The low geomorphical limit of the high alpine mountain can be defined as the upper limit of the forest stage. For the last hundred years, this limit has been moving according to climatic changes and economic factors. In the Alps, the high alpine glaciated mountain and the high rocky mountain, partially covered by snow and glaciers, are described. In the northern part ofthefrench Alps (44° latitude), periglacial phenomena allow us to distinguish a typical periglacial stage, between 2300 — 3000 meters, with sorted soils on small horizontal surfaces where the mean annual temperature is between 0° С and -4° C. In the infra-periglacial stage (1800 — 2300 meters), the main processes of evolution are that of running waters, fluviatile actions and snow melt waters. But in the supraglacial stage (3000 — 3800 meters), the processes are freezing, gelifraction, solifluxion, and the movement of« temperate glaciers » Figure 2 shows that the place of the typical periglacial phenomena are related to well-defined climatic limits. Now, the most active geomorphological activity is found between 2400 and 3200 meters

Alpine climate · Altitude (triangle) · Geography · Geomorphology · Glacier · Physical geography · Rock glacier · Snow · Stage (stratigraphy) · Cryospheric studies and observations · Ecology · Geology · Geology and Paleoclimatology Research · Landslides and related hazards · Paleontology