That be some hairy stuff. I guess the only constant is change but I always thought noticeable changes in coastlines (as in hundreds of yards or more) would happen over many lifetimes, not just one or two.

I'm not hoping to find a human cause here, but if all of Dokka's conclusions were correct about the bowling ball in a trampline effect, wouldn't this have been going on for the last few hundred years that people have been keeping track of these things? I gather that the rate of change has sped up dramatically. If this is true, I'm wondering if there isn't a man-made element that has contributed to that.

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1986 300SDL, 362K
1984 300D, 138K