Sand movement on a beach or river bank erosion can occur very quickly and dramatically in a storm event. Total Hydrographic can conduct multiple surveys at alternate instances in order to monitor and quantify material movements.
Cross sectional profiles allow for multiple surveys to be graphically compared between one another. An alternate analytical product from monitoring is a delta Z comparison where software compares the change in height and the same geographical location and can generate an independent XYZ data set for contouring and volume computation. The results can visually show where material is being removed from and where it is accumulating.