Can gravitational waves cancel out?

[udtsith]

Can gravitational waves be treated like light or water waves? E.g. what would happen if two waves intersected at their max amplitude? Or what would happen if they intersected at a peak and trough?

 

[DaveC426913]

I can't see why it wouldn't be possible.

This is essentially what gravitational waves do to an object:
http://www.lightandmatter.com/html_books/genrel/ch09/figs/gravitational-wave.png
They alternately squash it and squeeze it.

So, two overlapping crests would cause cumulative squishing, while a crest and trough would result in momentarily zero squishing.