. Effects of air gaps and saturated voids on accuracy of neutron moisture measurements. Soil moisture Measurement. S/U0>L£ OJHVE tame 36 40 46 80 96 60 66 70 79 PERCENT MOISTURE BY VOLUME 80 86 90 99 100 -SOS ERROR-X MOISTURE WOID EMPTY\ 'ONTROL cunve. BHxm 30 39 40 49 90 SS 60 68 70 75 80 88 90 9SI00 PERCENT MOISTURE BY VOLUME -5 0 5 ERROR-X MOISTURE Figure 9. — The variation in neutron moisture measurements between control and sample tanks containing small voids is shown. Measurements were made using fine sand as the porous medium when the water level was changing with respect to the void


. Effects of air gaps and saturated voids on accuracy of neutron moisture measurements. Soil moisture Measurement. S/U0>L£ OJHVE tame 36 40 46 80 96 60 66 70 79 PERCENT MOISTURE BY VOLUME 80 86 90 99 100 -SOS ERROR-X MOISTURE WOID EMPTY\ 'ONTROL cunve. BHxm 30 39 40 49 90 SS 60 68 70 75 80 88 90 9SI00 PERCENT MOISTURE BY VOLUME -5 0 5 ERROR-X MOISTURE Figure 9. — The variation in neutron moisture measurements between control and sample tanks containing small voids is shown. Measurements were made using fine sand as the porous medium when the water level was changing with respect to the Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original Richardson, Bland Z. cn; Burroughs, Edward R. (Edward Robbins), 1930-; Intermountain Forest and Range Experiment Station (Ogden, Utah) 1n. Ogden, Utah : Intermountain Forest & Range Experiment Station, Forest Service, U. S. Dept. of Agriculture


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