[Havoc]

See #55

[katana]

It's possible that (like hydrocarbons) there is an unknown quantity of subsurface ice on our planet which is imperceptibly rising to the surface over time but I would still maintain that whatever quantity of water we see and can measure (liquid, solid, and vapor) has remained roughly the same over time (certainly over the geologic blink of the eye that ten thousand years represents) but that the proportions among the three states it can assume have been in constant flux.

Supposedly there's evidence that at one time the entire surface of the earth was covered in a kilometer thick ice sheet (super ice age about 750 million years ago, see web page: http://millennium-debate.org/ind10ap035.htm). As far as I understand, besides temperature (at least partly a function of what the sun is up to) the only other variable affecting sea levels would be the amount of volcanic and tectonic upthrust (and decline) which the seafloor and land masses have undergone.