Understanding Root Shearing
Understanding whats happening below the ground
With the changing conditions of winter golf and with the ground thawing out, I thought you might find this video interesting. It is from the USGA about root shearing and what can happen to the grass, especially that of the putting greens, below the surface. This why a certain times it is necessary to either close the course or play on temporary greens.

The video is on twitter so you may need to login to see it, but to view it please Click Here