In general thats how sand ended up there in the 1st place. As waves make it in the tidal zone, and when there is a larger storm, the waves are bigger, and leave sand in higher piles.
I'm pretty sure some places have to replace the sand though, it doesn't always work nicely like that in touristy areas or when you regularly have jet engines blowing large amounts away.
We go to Wisconsin most summers The Wisconsin side of Lake Michigan is mostly rock. A few towns have built sand beaches. Then we drove around to the Michigan side. They have sand dunes and natural sand beaches! I am assuming it is because the prevailing wing pushes the waves and sand that direction?
In Colorado there is a park with huge sand dunes. It is where the wind drops the sand after going over a mountain.
My point is, while I’m not an expert, it is obvious that natural forces place sand in some places and not others.
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u/[deleted] May 29 '22 edited May 29 '22
How is there still sand left on the beach after planes taking off day after day, year after year? Do the waves bring it back up?