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18 March 2011

Comments

Russ Steele

"Contrary to some reports circulating the Internet," says NASA, "perigee Moons do not trigger natural disasters. The "super moon" of March 1983, for instance, passed without incident. And an almost-super Moon in Dec. 2008 also proved harmless."

Some of Geologist Jim Berkland predictions have not happened, specifically an eruption at Yellowstone.

Dixon Cruickshank

IMHO as I mentioned on your site we have had quite a few large quakes all around that plate. We also not long ago had the plate in Haiti move and that hasn't moved in quite along time and never produced little quakes, just seems to be a whole lot a shake'in goin on. Chile and the one in Baja may have been because of that one moving though.

Larry Wirth

For what it's worth, I recall that the 9 Feb 1971 Northridge quake happened just after a lunar eclipse. I remember wondering then if the extreme tide conditions which come at such times could lessen the weight of water over the land and allow the plates to slip. People thought I was crazy to imagine such a thing. Stick around long enough and speculation becomes science.

George Rebane

From a purely technical point of view, tidal forces on the earth's crust do cause both strains (actual movements) and stresses (build up forces). The theory here being that if something was already 'cocked' and ready to go, then such tidal events could be the trigger. And if things weren't quite ready to go, then tidal events could also 'cock' the junction of two plates. That such global forces do not affect the propensity of tectonic plates to slip is a notion that needs to be defended.

BTW Larry, if you ever decide to start a blog, your comment inspired me to suggest its name - 'For What It's Wirth'.

D. King

"From a purely technical point of view, tidal forces on the earth's crust do cause both strains (actual movements) and stresses (build up forces)."

When you think of the amount energy necessary to lift the ocean, it's not surprising.

http://www.youtube.com/watch?v=l37ofe9haMU

Larry Wirth

My sister suggests Wirthyl...

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