There's some research out there that correlates certain types of marine quakes with tidal levels: http://onlinelibrary.wiley.com/doi/10.1111/j.1365-246X.2009.04

There's some research out there that correlates certain types of marine quakes with tidal levels: http://onlinelibrary.wiley.com/doi/10.1111/j.1365-246X.2009.04319.x/abstract http://onlinelibrary.wiley.com/doi/10.1111/j.1365-246X.2009....