To: nightdriver
The zero-point of the sea, meticulously established on a small cliff on an island (The Isle of the Dead) off the southeast coast of Australia in 1841, shows that the ocean level has lowered by about 30 cm (about a foot) since 1841.You can't use one data point to establish mean sea level over time -- the land could be rising, rather than the sea falling. You need to have many dozens of localities around the world to establish this by such a technique.
27 posted on
03/03/2006 11:53:05 AM PST by
Cincinatus
(Omnia relinquit servare Republicam)
To: Cincinatus
"
You can't use one data point to establish mean sea level over time..."Very true, I agree.
But at least this one IS a data point, and it would seem to contradict the Chicken Littles that continuously harp about innundation by the oceans.
To: Cincinatus
You need to have many dozens of localities around the world to establish this by such a technique.Or satellite radar altimetry, which measures sea level at thousands of points on the ocean surface, and then calculates sea level rise over time.
![](http://www.jason.oceanobs.com/images/actualites/applis/niv_moy_sm.gif)
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