ATI Soils

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ATI Soils

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Faculty/Instructor

Deana Namuth-Covert
Professor, Director of Online Education and Outreach, The Ohio State University; Agronomy & Horticulture Adjunct Professor, University of Nebraska
dcovert2@unl.edu

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Erosion

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Factors Continued...Climate

Climate

Duration and intensity of rainfall regulates the amount of soil detachment and subsequent loss from the land. During intense storms, rainfall can detach up to 100 tons/acre.

The erosive energy of running water depends on the volume and velocity. When the erosive energy is high (i.e., high volume and velocity), water can detach and transport large particles as well as smaller particles.

Thinking Question: Assuming both reach the ground at the same velocity, which rain event would likely have more erosive power? Explain why.

30 minutes large raindrops
30 minutes small raindrops

SOIL FACT

The total energy for a 760 mm (30 inches) annual precipitation occurring over 2.6 square kilometers (One square mile) is equivalent to the energy of 9,100 metric tons (8,256 short ton) of TNT (Meyer and Renard, 1991)!!!

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This project was supported in part by the National Research Initiative Competitive Grants CAP project 2011-68002-30029 from the USDA National Institute of Food and Agriculture, adminstered by the University of California-Davis and by the National Science Foundation (NSF), Division of Undergraduate Education, National SMETE Digital Library Program, Award #0938034, administered by the University of Nebraska. Any opinions, findings, conclusions or recommendations expressed in this publication are those of the author(s) and do not necessarily reflect the views of the USDA or NSF.

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