Beyond confusion: Rock glaciers as cryo-conditioned landforms

被引:177
作者
Berthling, Ivar [1 ]
机构
[1] Norwegian Univ Sci & Technol, Dept Geog, N-7491 Trondheim, Norway
关键词
Rock glacier; Permafrost; Thermal conditioning; Emergence; Landform classification; Debris-covered glacier; PRINS-KARLS-FORLAND; DEBRIS-COVERED GLACIERS; ICE-CORED MORAINES; SWISS ALPS; MOUNTAIN PERMAFROST; SIERRA-NEVADA; ABSAROKA MOUNTAINS; INTERNAL STRUCTURE; NORTHERN ICELAND; THERMAL REGIME;
D O I
10.1016/j.geomorph.2011.05.002
中图分类号
P9 [自然地理学];
学科分类号
0705 ; 070501 ;
摘要
Whether rock glaciers are permafrost creep features or may also be related to glaciers in non-permafrost environments, and whether they should be defined by genesis or appearance, have caused heated debate for several decades. This paper analyses the rock glacier debate from a theoretical viewpoint, in order to highlight and discuss underlying problems and with the aim of providing a common conceptual framework from which to proceed. It is suggested that the morphological rock glacier definition should be abandoned. A new genetic definition is proposed where permafrost is the primary condition, but where the deforming ice/debris may be of both glacial and periglacial origin. (C) 2011 Elsevier B.V. All rights reserved.
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页码:98 / 106
页数:9
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