posted on Mar, 17 2011 @ 02:42 PM
Richard Gross of NASA’s Jet Propulsion Laboratory, has calculated that the Japan earthquake has shortened earth days, and moved its axis. It's not
something to worry about, as it is in the microseconds scale. Both the Chile and Sumatran earthquakes would have a similar effect, and there is an
annual variation as well. More reading here,
In theory then, anything that redistributes Earth’s mass will change Earth’s rotation, even large water dams and movements of water. This 2003
NASA paper gives a good explanation through meteorology and astronomical data. I like the washing machine analogy,
It would be interesting just how much happening at once would, or could ever make a big difference.
edit on 17-3-2011 by smurfy because: Add link.