Squeezed by gravity: how tides affect the groundwater under our feet
- Written by Gabriel C Rau, Lecturer, School of Civil and Environmental Engineering (CVEN) & Connected Waters Initiative Research Centre (CWI), UNSW
There's a lot of water beneath our feet.ShutterstockWhen returning from a swim in the ocean, sometimes it seems as though your towel has moved. Of course, it’s just that the water line has shifted.
The natural rise and fall of the ocean at the beach is an excellent demonstration of gravitational forces exerted by the Sun and the Moon....







