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Parameters for Describing Soil Detachment Due to Single Waterdrop Impact
Author(s) -
AlDurrah M. M.,
Bradford J. M.
Publication year - 1982
Publication title -
soil science society of america journal
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.836
H-Index - 168
eISSN - 1435-0661
pISSN - 0361-5995
DOI - 10.2136/sssaj1982.03615995004600040034x
Subject(s) - splash , soil water , soil science , drop (telecommunication) , linear regression , kinetic energy , organic matter , shear strength (soil) , chemistry , environmental science , geotechnical engineering , mathematics , geology , physics , thermodynamics , statistics , telecommunications , organic chemistry , quantum mechanics , computer science
A simple relationship that predicts soil detachment due to single raindrop impact was tested for nine soils and three drop sizes. This relationship expressed splash weight as a linear function of the ratio of raindrop kinetic energy to soil resistance expressed as the undrained shear strength. The coefficient of determination values between splash weight and the force‐resistance ratio for individual soils were high ( r 2 = 0.88 to 0.97); however, the coefficient of determination among all soils was lower ( r 2 = 0.81). This was due to differences among soils in the slope of the regression line and to uncertainties associated with the calibration of the fall‐cone penetration apparatus. The slope was highly correlated with percent clay, organic matter, surface area, exchangeable sodium, and the amount of soluble salts. A maximum coefficient of determination of 0.61 was found when soil properties other than shear strength were used as independent variables to predict soil splash.