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Some observations regarding sorted stripes, livingston island, south shetlands

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  • Kevin Hall

Abstract

Sorted stripes have long been recognized in the sub‐Antarctic and the maritime Antarctic. The cold and wet conditions of these regions, when compared with the drier continent, are ideal for their development. In particular, the frequent low‐amplitude, short‐duration freeze‐thaw cycles of the sub‐Antarctic favour the development of miniature sorted forms. The maritime Antarctic, however, with its larger amplitude and longer duration of freeze‐thaw cycles, plus the presence of permafrost, exhibits a more frequent occurrence of the larger forms. The Byers Peninsula has an extensive range of sorted features but, despite being situated in the maritime Antarctic and within a permafrost zone, the majority of these features are of the miniature variety. In addition, the sorted stripes exhibit a distinct spatial preference. Their alignment and spatial distribution are not associated with either the sun or the wind, but are a function of the snow cover. Des sols striés triés ont été reconnus depuis longtemps dans l'Antarctique maritime et le domaine subantarctique. Les conditions froides et humides de ces régions sont, par rapport aux conditions plus sèches du continent, idéales pour le développement de ces sols structurés. Les gels fréquents de faible amplitude et de courte durée favorisent l'apparition de formes trieés miniatures. Dans l'Antarctique maritime, les gels de plus grande amplitude et de plus longue durée déterminent la présence d'un pergélisol; les sols structuraux y ont des dimensions plus grandes. La péninsule de Byers présente une variété considerable de phénomènes triés, mais bien qu'étant située dans l'Antarctique maritime et dans une zone de pergélisol, la majorité des sols structuraux périglaciaires y sont de petite taille. En outre, les sols striés triés montrent une répartition particulière; leur alignement et leur distribution spatiale ne sont associés, ni avec le soleil, ni avec le vent, mais ils sont en relation avec la couverture neigeuse.

Suggested Citation

  • Kevin Hall, 1994. "Some observations regarding sorted stripes, livingston island, south shetlands," Permafrost and Periglacial Processes, John Wiley & Sons, vol. 5(2), pages 119-126, July.
  • Handle: RePEc:wly:perpro:v:5:y:1994:i:2:p:119-126
    DOI: 10.1002/ppp.3430050206
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