Floor / ground that you can send a wave through

Hi Im pretty new to unity so forgive me if this is really easy.

I would be very grateful for any advice on how you would simulated sending a wave through (across) a solid floor so as to simulated anything like a shock wave or even sci-fi fantasy waves and ripples accross what appears to be a solid piece of ground.

the rise and fall of the waves would make any player characters and objects rise and fall in sync with the wave too.

note: i am not looking to have objects 'float' IN the waving floor like an object would water.. but sit on top of the wave/floor - its a solid floor.. except it has waves or ripples moving accross it.

any advice greatly appreciated

regards

michael