Permafrost Archives and Oral Thermometry: Siberian Evenki’s Cryospheric Knowledge Systems

永久冻土档案与口述温度计：西伯利亚埃文基人的冰冻圈知识体系

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Evenki reindeer herders across the Central Siberian Plateau assess permafrost stability not through borehole sensors but by interpreting snow compaction sounds, lichen growth angles, and reindeer hoof-sink depth—what linguists term 'oral thermometry'.
Their seasonal calendar divides the year into 17 named freeze-thaw phases, each with distinct travel routes, campsite criteria, and meat preservation techniques tied to ground conductivity thresholds.

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