What is the interaction of astronomical tide with storm surge?
In general one may expect that if there is a storm surge of x metres and tidal wave of y metres then during high tide total surges would be x+y and during low tide x-y. But, it is found that there is an interaction of storm surge with astronomical tide, and during high tide time the total surge is little less than x+y and during low tide time it is little more than x-y.
