Wumpini writes:
If you read that article {
Geotimes - July 2006 - Earth soaks up seawater} then you will find an interesting scientific calculation. As I said above, these researchers have calculated that as much as one half of the water in the mantle is seawater. Here is the quote:
quote:
Assuming the same seawater composition for the entire mantle, they calculated that seawater accounts for about 50 percent of the water in the mantle, with the rest of the water trapped during the planet’s formation, they reported in the May 11 Nature.
And, if you'd read carefully:
quote:
That much seawater in the mantle means that as much as 10 percent of Earth’s oceans have been subducted into the planet’s interior throughout its history ” more than returns to the atmosphere and oceans through volcanic eruptions, Holland says. “On balance,” he adds, “the cycle is moving water from the surface and into the mantle.”
So, what is the claim of these researchers, Wumpini?
They think that the oceans have lost 10% of their water to the mantle, doubling the water in the mantle, and meaning that they think the mantle water now equals 20% of the original quantity in the oceans, and two ninths of the present quantity in the oceans.
This means that the researchers you are quoting do not think that there's enough water in the mantle to cover the earth. What they are saying is that the surface water is being slowly lost to the interior; that a very small percentage is managing to pass the heat barrier somehow.
At the rate described, in another 30 billion years or so, the oceans will have disappeared!!!!!