Rainmaking Chants as Hydrological Archives in Precolonial Yoruba Towns

前殖民时期约鲁巴城镇中的求雨歌谣作为水文档案

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Yoruba rainmaking chants from Ile-Ife and Oyo were transmitted orally but encoded precise hydrological data—seasonal aquifer levels, soil saturation thresholds, and microclimate shifts—within tonal patterns.
Each verse mapped localized watershed boundaries using place-names that no longer appear on modern topographic surveys.

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