Source: AGU Advances This is an authorized translation of an Eos article. 本文是Eos文章的授权翻译。 北极地区冻土覆盖的山坡上会呈现出一系列几何纹理，从圆形、条纹到多边形图案，不一而足。此外，还存在冻融泥流（solifluction）形态，即部分融化的永久冻土沿坡下滑时留下的痕迹。这些冻融泥流形态看起来像是平坦的梯田状土壤，如同一个巨大的阶梯，与梯田底部圆形的土壤块状物组合在一起。 随着气候变化加剧冻土融化的速度，了解这些图案的形成方式对于预测和修复北极地区不稳定的坡面至关重要。同时，这也有助于研究火星过去的气候状况，因为科学家已经在火星表面发现了类似的地形。然而，冻融泥流形态的形成机制一直难以解释。在一项新的研究中，Glade等人利用数学和物理模型以及遥感技术，解释了冻融泥流地形的形成机制。 冰冻土壤的移动速度非常缓慢，每年仅移动几毫米到几厘米，其行为也十分复杂，有时像流体，有时又像固体。这种复杂性源于水分和温度的季节性变化，以及土壤本身的固有物理规律。 研究人员排除了其他常见的流体类比物，例如墙上的油漆滴落、熔岩褶皱中的屈曲不稳定性以及滚动波。研究人员回顾了土壤学文献，运行了基于物理过程的计算机模型，对梯田与叶状结构的形成进行了模拟，并对不同流体行为进行了数学建模。...
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Editors’ Vox is a blog from AGU’s Publications Department. Every lightning flash has one defining moment: the...
Source: AGU Advances This is an authorized translation of an Eos article. 本文是Eos文章的授权翻译。 北极地区冻土覆盖的山坡上会呈现出一系列几何纹理，从圆形、条纹到多边形图案，不一而足。此外，还存在冻融泥流（solifluction）形态，即部分融化的永久冻土沿坡下滑时留下的痕迹。这些冻融泥流形态看起来像是平坦的梯田状土壤，如同一个巨大的阶梯，与梯田底部圆形的土壤块状物组合在一起。 随着气候变化加剧冻土融化的速度，了解这些图案的形成方式对于预测和修复北极地区不稳定的坡面至关重要。同时，这也有助于研究火星过去的气候状况，因为科学家已经在火星表面发现了类似的地形。然而，冻融泥流形态的形成机制一直难以解释。在一项新的研究中，Glade等人利用数学和物理模型以及遥感技术，解释了冻融泥流地形的形成机制。 冰冻土壤的移动速度非常缓慢，每年仅移动几毫米到几厘米，其行为也十分复杂，有时像流体，有时又像固体。这种复杂性源于水分和温度的季节性变化，以及土壤本身的固有物理规律。 研究人员排除了其他常见的流体类比物，例如墙上的油漆滴落、熔岩褶皱中的屈曲不稳定性以及滚动波。研究人员回顾了土壤学文献，运行了基于物理过程的计算机模型，对梯田与叶状结构的形成进行了模拟，并对不同流体行为进行了数学建模。...
Editors’ Highlights are summaries of recent papers by AGU’s journal editors. Source: Journal of Geophysical Research: Earth...
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