On Mon, Jan 18, 2010 at 11:24 PM, David Scheidt <[email protected]> wrote:
> > > On Mon, Jan 18, 2010 at 8:22 PM, Captain Joy <[email protected]> wrote: > >> The retention of water by dams and >>> reservoirs at higher latitudes away from the equator has already had a >>> measurable impact on the spin of the earth for decades >>> >> >> "measurable impact"? Source, please. >> - > > > He's not making this up. The three Gorges dam (the huge new one in China) > is responsible for increasing the day by about 0.06 microseconds, and > shifting the poles (the axis of rotation, really) a centimeter or two. It's > okay, though. The increase in day length was more than made up for by the > 2004 earthquake that caused the big tsunami. That shortened the day by 2.68 > microseconds. (NASA published a paper about this; it was widely reported at > the time. I may have the numbers slight wrong, but I've got their > magnitudes right.) > > http://news.nationalgeographic.com/news/2010/03/100302-chile-earthquake-earth-axis-shortened-day/ -- David Scheidt [email protected] _______________________________________________ GurpsNet-L mailing list <[email protected]> http://mail.sjgames.com/mailman/listinfo/gurpsnet-l
