[time-nuts] 3 Gorges dam slows down Earth's rotation by 60 ns/day

[Tom Van Baak]

Rick,

See also the NASA press release from 2005:

https://www.jpl.nasa.gov/news/news.php?release=2005-009

The formal paper about the 3 Gorges calculation is here (4 pages, PDF):

"Time-variable gravity signal during the water impoundment of China’s 
Three-Gorges Reservoir"
https://agupubs.onlinelibrary.wiley.com/doi/pdf/10.1029/2002GL016457

For many more like it google for: Richard Gross rotation day

It's worth a minute to look through the search results. What you'll find 
is that anytime there's a large earth deformation event (e.g., 
earthquake, tsunami) Richard Gross and Benjamin Fong Chao at NASA 
Goddard make a *theoretical* prediction about earth rotation. They are 
legitimate scientists but unfortunately the popular press often distorts 
or sensationalizes their modest findings. The link you quoted was 
particularly poor in this respect.

Some technical discussion here:

https://skeptics.stackexchange.com/questions/45370/will-chinas-three-gorges-dam-slow-down-earths-rotation

A long list of resources:

https://physics.info/rotational-momentum/resources.shtml

And if you haven't see it before, I have phase, frequency, and ADEV 
plots of earth here:

http://leapsecond.com/museum/earth/

/tvb


On 6/29/2020 9:39 AM, Richard (Rick) Karlquist wrote:
>
> See:
>
> https://futurism.com/how-infamous-hydroelectric-dam-changed-earths-rotation 
>
>
> Of course, readers of this list know that the earth isn't stable to 60 
> ns/day in the first place.  But this is an interesting calculation, at 
> least to time nuts.
>
> Rick N6RK
>
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