This study presents the first subglacial topography and ice thickness models of the largest ice caps of the Argentine Islands, Wilhelm Archipelago, West Antarctica. During this study, ground-penetrating radar was used to map the thickness and inner structure of the ice caps. Digital surface models of all studied islands were created from aerial images obtained with a small-sized unmanned aerial vehicle and used for the construction of subglacial topography models. Ice caps of the Argentine Islands cover ~50% of the land surface of the islands on average. The maximum thickness of only two islands (Galindez and Skua) exceeds 30 m, while the average thickness of all islands is only ~5 m. The maximum ice thickness reaches 35.3 m on Galindez Island. The ice thickness and glacier distribution are mainly governed by prevailing wind direction from the north. This has created the prominent narrow ice ridges on Uruguay and Irizar islands, which are not supported by topographic obstacles, as well as the elongated shape of other ice caps. The subglacial topography of the ice caps is undulated and mainly dependent on the geological structure and composition of magmatic rocks.

中文翻译：

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阿根廷群岛的冰下地形和冰盖厚度

这项研究提出了阿根廷群岛，威廉群岛，西南极洲最大的冰盖的第一个冰下地形和冰厚度模型。在这项研究中，使用探地雷达来绘制冰盖的厚度和内部结构。所有研究岛屿的数字表面模型都是从使用小型无人机获得的航空图像创建的，并用于构建冰下地形模型。阿根廷群岛的冰盖平均覆盖约 50% 的岛屿陆地表面。只有两个岛屿（Galindez 和 Skua）的最大厚度超过 30 m，而所有岛屿的平均厚度仅为~5 m。加林德斯岛的最大冰层厚度达到 35.3 m。冰的厚度和冰川的分布主要受来自北方的盛行风向控制。这在乌拉圭和伊里扎岛上形成了突出的狭窄冰脊，这些冰脊不受地形障碍的支撑，以及其他冰盖的细长形状。冰盖的冰下地形起伏不定，主要取决于岩浆岩的地质结构和成分。