The surficial and subglacial geomorphology of western Dronning Maud Land, Antarctica

The surficial and subglacial geomorphology of western Dronning Maud Land, Antarctica
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南极洲德隆宁莫德地西部的地表和冰下地貌

DOI:
10.1080/17445647.2015.1097289
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发表时间:
2015
期刊:
影响因子:
2.2
通讯作者:
Chang M
Chang M
中科院分区:
地球科学3区
文献类型:
--
作者:
Chang M

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南极洲西部德龙宁毛德地(WDML)220,000 km 2的冰下和冰上地貌是以1:750,000的比例尺呈现的。地图上的区域包括南纬75°25′以北的斯坦科姆-威尔斯冰川,并沿着接地冰缘到达本初子午线的尤图尔斯特劳门冰流。冰下地貌制图建立在最近的方法进步的基础上,这些方法利用冰面的光学和被动卫星图像来推断冰下地形的主要要素。假设的地貌图揭示了高山冰川景观,周围,每个冰原岛峰地区,推断通过存在陆上和冰下冰斗,arêtes和紧密间隔的悬谷。一系列冰下槽被发现与主要的Jutulstraumen-Penck槽相交。该地图旨在帮助分析WDML内景观演变的模式和过程,并提供与前冰流模式相关的侵蚀模式的更多细节。
The surficial and subglacial geomorphology of ∼220,000 km2of western Dronning Maud Land (WDML), Antarctica, is presented at a scale of 1:750,000. The mapped area includes the Stancomb-Wills Glacier north of 75°25′S and follows the grounded ice margin to the Jutulstraumen Ice Stream at the Prime Meridian. Mapping of subglacial geomorphology builds upon recent methodological advances that use optical and passive satellite imagery of the ice surface to infer major elements of the subglacial topography. The hypothesised geomorphological map reveals an alpine glacial landscape at, and surrounding, every nunatak region, inferred through the presence of subaerial and subglacial cirques, arêtes and closely spaced hanging valleys. A series of subglacial troughs are found to intersect the main Jutulstraumen–Penck troughs. The map is aimed at helping analyse patterns and processes of landscape evolution within WDML and provides greater detail of erosion patterns associated with former ice flow patterns.
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