Rock glaciers in central Patagonia

IF 1.4 4区地球科学 Q3 GEOGRAPHY, PHYSICAL

Geografiska Annaler Series A-Physical Geography Pub Date : 2018-10-22 DOI:10.1080/04353676.2018.1525683

H. Selley, S. Harrison, N. Glasser, Olaf Wündrich, D. Colson, A. Hubbard

引用次数: 10

Abstract

ABSTRACT Active rock glaciers are ice and debris-cored landforms common in cold arid mountains. They have not been widely described in the Patagonian Andes of southern South America and here we provide the first rock glacier inventory for the Jeinimeni region to the east of the contemporary North Patagonian Icefield. Detailed analysis of available satellite imagery and fieldwork demonstrates the presence of 89 rock glaciers across the study region, covering a total of 14.18 km2. Elevation is the primary control on rock glacier distribution with 89% existing between 1600 and 1900 m.a.s.l. Aspect also plays a significant role on rock glacier formation with 80% preferentially developed on southerly slopes receiving lower solar insolation.

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巴塔哥尼亚中部的岩石冰川

活动岩石冰川是在寒冷干旱山区常见的以冰和碎屑为核心的地貌。它们在南美洲南部的巴塔哥尼亚安第斯山脉没有被广泛描述过，在这里，我们为当代北巴塔哥尼亚冰原以东的Jeinimeni地区提供了第一个岩石冰川清单。对现有卫星图像和实地考察的详细分析表明，整个研究区域存在89个岩石冰川，总面积为14.18平方公里。海拔高度是岩石冰川分布的主要控制因素，其中89%存在于海拔1600 ~ 1900年之间。坡向在岩石冰川形成中也起着重要作用，80%的岩石冰川优先发育在日照较少的南坡上。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Geografiska Annaler Series A-Physical Geography 地学-地质学

CiteScore

3.60

自引率

0.00%

发文量

审稿时长

>12 weeks

期刊介绍： Geografiska Annaler: Series A, Physical Geography publishes original research in the field of Physical Geography with special emphasis on cold regions/high latitude, high altitude processes, landforms and environmental change, past, present and future. The journal primarily promotes dissemination of regular research by publishing research-based articles. The journal also publishes thematic issues where collections of articles around a specific themes are gathered. Such themes are determined by the Editors upon request. Finally the journal wishes to promote knowledge and understanding of topics in Physical Geography, their origin, development and current standing through invited review articles.