地理漫步·世界地理英语30篇（6）
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Periglacial Landscapes: Frost Action Shapes Terrain Beyond Glaciers
冻缘地貌：冰缘作用在冰川之外塑造地形
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Freeze-thaw cycles crack bedrock and sort stones into patterned ground without glacial ice.冻融循环使基岩开裂，并在无冰川冰的情况下将石块排列成有规律的地貌。
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Solifluction flows occur when waterlogged soil moves slowly over frozen subsoil on gentle slopes.当饱水土壤在缓坡上缓慢滑过冻结的下层土时，便发生泥流作用。
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Pingos—ice-cored hills—form where groundwater freezes and lifts overlying sediments upward.冰核丘是冰芯隆起形成的山丘，由地下水冻结并抬升上覆沉积物而成。
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Patterned ground includes polygons, stripes, and circles shaped by differential frost heave intensity.多边形、条带和环状等有规律的地貌，由差异性冻胀强度塑造而成。
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Permafrost degradation thaws previously stable slopes, triggering retrogressive thaw slumps in Arctic tundra.多年冻土退化使原本稳定的斜坡解冻，从而在北极苔原引发后退式热融滑塌。
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Rock glaciers move imperceptibly slow but transport debris far beyond active glacier termini.石冰川移动极其缓慢，却能将碎屑搬运至活跃冰川末端之外很远的地方。
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Frost wedging dominates erosion in high-altitude deserts where snow cover is thin but temperature swings extreme.在积雪稀薄但温差极大的高海拔沙漠中，冻融风化是主要侵蚀方式。
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Thermokarst lakes form when ground ice melts, leaving depressions that fill with rainwater and runoff.地下冰融化后形成凹陷，雨水和径流注入其中，便发育为热融湖。
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These landscapes span latitudinal bands where mean annual temperatures hover near zero degrees Celsius.这些地貌分布于年均气温接近0℃的纬度带。
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Remote sensing now tracks periglacial change rates to model future terrain instability under warming.遥感技术现已用于监测冻缘区变化速率，以模拟气候变暖下的未来地形失稳。