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Climatic Zonality of Periglacial Landforms in Mountain Areas

Stuart A. Harris
Arctic
Vol. 47, No. 2 (Jun., 1994), pp. 184-192
Stable URL: http://www.jstor.org/stable/40511557
Page Count: 9
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Abstract

The alpine periglacial areas of the world can be divided into three distinctive landscape types dominated by one of the following: active rock glaciers, active block streams, or gelifluction landforms. These also correspond to distinct climates, the active rock glaciers occurring under cold, humid conditions; the active block streams in cold, dry climates; and gelifluction-dominated landforms occurring in warmer areas. These have distinct ranges of mean annual temperature and precipitation, which can be used in interpreting climatic changes based on distribution of fossil landforms. /// On peut diviser les régions périglaciaires alpines du globe en trois types de paysages distincts, dominés par un des éléments suivants : glaciers rocheux actifs, coulées de pierres actives ou reliefs de gélifluxion. Ces éléments correspondent aussi à des climats distincts, les glaciers rocheux existant dans des conditions de froid et d'humidité; les coulées de pierres actives sous des climats froids et secs; et les reliefs de gélifluxion dans des régions plus tempérées. Ces paysages ont des gammes différentes de moyennes annuelles de températures et de précipitations, qui peuvent servir à interpréter les changements climatiques fondés sur la distribution des reliefs fossiles.

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