December 1, 2025Water Resources ResearchOpen Access

A Conceptual Framework for Erosion of Unsaturated Cohesive Soil

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Soil erosion decreases with rising soil moisture, indicating a complex interplay of factors like matric suction and shear strength.
Soil detachment rates varied significantly from 123 to 0.2 cm³/(N-s) in lean clay and 122 to 0.3 cm³/(N-s) in fat clay as moisture increased.
Analysis involved erosion tests on compacted lean and fat clay samples to derive regression models for predicting detachment rates and stresses.
The findings highlight implications for erosion predictions on earthen structures and landscapes, emphasizing the importance of moisture content.

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Conceptual framework reveals soil moisture impacts erosion and shear strength, suggesting critical factors for prediction in landscapes.

Bryan J. Heiner (2025) studied this question.

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