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1988-01-15
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911b
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32 lines
Conductivities and Dielectric Constants for Common Types of Earth
Surface Type Dielectric Conductivity Quality
Constant mS/m
-------------------------- ---------- ------------ ---------
Salt water 81 5000.0 Excellent
Fresh water 80 1.0
Pastoral, low hills, rich 20 30.3 Very good
soil (Dallas, TX to
Lincoln, NE)
Pastoral, low hills, rich 14 10.0
soil (OH and IL)
Flat country, marshy, 12 7.5
densely wooded (LA near
Mississippi River)
Pastoral, medium hills and 13 6.0
forestation, (MD, PA, NY,
exclusive of mountains
and coastline)
Pastoral, medium hills and 13 5.0 Average
forestation, heavy clay
soil (central VA)
Rocky soil, steep hills 12-14 2.0 Poor
(mountainous areas)
Sandy, dry, flat, coastal 10 2.0
Cities, industrial areas 5 1.0 Very poor
Cities, heavy industrial 3 0.1 Extremely poor
From QST July 1987