Soil Heave

1. The disturbance of a surface due to the process of freezing water on a soil, which expands and pushes apart soil particles and aggregates. The extent of any soil heave is related to the moisture content of the soil and the severity of the freezing conditions, in particular how far the freeze has penetrated into the soil profile.
2. The physical disturbance of a rootzone, to varying degrees of disruption. This might be due to an activity such as forking, deep spiking, air injection during aeration, decompaction, sub-soiling, or similar activities.