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Offline Fo

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Tsunami warnings
« on: December 20, 2015, 08:52:33 AM »
When tsunami wave estimates to reach landfall are measured and given to possibly affected countries, are the wave velocity/distance calculations measured according to globe or flat earth?

Thork

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Re: Tsunami warnings
« Reply #1 on: December 20, 2015, 02:15:52 PM »
It is a flat earth calculation. No global gobbledegook included to account for any pretend curvature.


The square root of the depth multiplied by 9.81m/s gives the speed of a tsunami.



Offline model 29

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Re: Tsunami warnings
« Reply #2 on: December 20, 2015, 04:46:21 PM »
Quote from: Dr David Thork on December 20, 2015, 02:15:52 PM
No global gobbledegook included to account for any pretend curvature.
Why would it be needed?  The elevation of the surface is the same along the distance traveled (sure there are some swells), and depth is accounted for.

How does a tsunami get from Chile to Japan on the flat Earth?
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