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Lecture 50

GEOG 1280 Lecture 50: Lecture 50
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Department
Geography
Course
GEOG 1280
Professor
Bruce G.Erickson
Semester
Summer

Description
Oc982 Nature of Surface 1) Porosity Pore space, sand (large size), clay (small size) Filled with air and water 2) Permeability Ability to transmit water Linked pores deals with the movement of water 3) Vegetation and Organisms High with many roots Earthworms many channels Nature of Water Input 4) Rainfall Intensity How much rainfall in an hour, high intensity = exceeding infiltration capacity 5) Rainfall Duration Number of hours of rain, saturation occurs 6) Time since last rain Days in a row with rain leads to saturation or without leads to powdered surface that acts like a barrier. Seasonal 7) Seasonal factors Winter frozen ground Summer dry soil Significance of Soil Erosion
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