Abstract
Soils having a gilgai (undulating) surface present unusual management problems. Better use of a gilgai surface could be made if the user understood how the soil properties would affect his activities. The genesis of gilgai has not been fully explained. The objective of this study was to evaluate the genetic influence of water parameters on a gilgai soil. Induction coils were used in the soil profile to identify the location of earth movement. A system was developed for installation of the induction coils vertically within profiles beneath both mound and depression sites within an area whose surface exhibited gilgai. The locations of large change in length between coil pairs also reflected the greatest change in volumetric moisture content. The change in soil length was correlated positively with the fluctuating water content. The most active zone of swelling activity was found to be 45-85 cm below the surface of the mounds.
Spotts, James Willis (1974). The role of water in gilgai formation. Texas A&M University. Texas A&M University. Libraries. Available electronically from
https : / /hdl .handle .net /1969 .1 /DISSERTATIONS -173264.