You mean like ripples in a pond? Yes, that does happen for both deep and shallow water waves. And yes, the wave power would be expected to spread laterally, cau

You mean like ripples in a pond? Yes, that does happen for both deep and shallow water waves. And yes, the wave power would be expected to spread laterally, causing the amplitudes observed at a point to be smaller further from the source. Here's a model visualization of the tsunami set off by the 2004 Sumatran earthquake. http://youtu.be/46ovp1rZeL4 http://youtu.be/46ovp1rZeL4