Solid Earth change and the evolution of the Antarctic Ice Sheet
Solid Earth change and the evolution of the Antarctic Ice Sheet
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DOI：
10.1038/s41467-018-08068-y
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发表时间：
2019-01
影响因子：
16.6
通讯作者：
P. Whitehouse;N. Gomez;M. King;D. Wiens
中科院分区：
文献类型：
--
作者：
P. Whitehouse;N. Gomez;M. King;D. Wiens
最近的研究表明，南极洲有可能在未来几个世纪内使海平面上升约15米。南极冰盖的演变是由气候强迫和非气候反馈共同驱动的。在这篇评论中，我们专注于南极冰盖和固体地球之间的反馈，以及这些反馈在塑造冰盖对过去和未来气候变化的反应中的作用。南极冰盖的增长和衰退通过等渗和侵蚀重塑了固体地球。反过来，冰床的形状对冰的动力学以及接地线的位置（冰开始漂浮的位置）施加基本的控制。一个复杂的问题是，南极洲位于地球上一个流变特性空间差异很大的区域。这些特性影响冰盖变化和固体地球变形之间反馈的时间尺度和强度，因此在考虑冰盖的未来演变时必须加以考虑。
Recent studies suggest that Antarctica has the potential to contribute up to ~15 m of sea-level rise over the next few centuries. The evolution of the Antarctic Ice Sheet is driven by a combination of climate forcing and non-climatic feedbacks. In this review we focus on feedbacks between the Antarctic Ice Sheet and the solid Earth, and the role of these feedbacks in shaping the response of the ice sheet to past and future climate changes. The growth and decay of the Antarctic Ice Sheet reshapes the solid Earth via isostasy and erosion. In turn, the shape of the bed exerts a fundamental control on ice dynamics as well as the position of the grounding line—the location where ice starts to float. A complicating issue is the fact that Antarctica is situated on a region of the Earth that displays large spatial variations in rheological properties. These properties affect the timescale and strength of feedbacks between ice-sheet change and solid Earth deformation, and hence must be accounted for when considering the future evolution of the ice sheet.