posted on Sep, 14 2008 @ 01:08 PM
reply to post by Harlequin
and what ever the cause of the ice melts there will be a critical de-salination point for the worlds oceans , and with this much freshwater
being dumped in it that point will be reached sooner rather than later.
De-salination. That is a pretty inaccurate term in itself. No salt (saline) is removed from the oceans due to an influx of fresh water. It is more of
a decrease in the salt(s) content.
This 'de-salination point' actually doesn't exist. It's an attempt to simplify a chaotic state. It is true that should there be a sufficient
influx of fresh water into, say, the Gulf Stream, at some (undetermined) level, it would probably disrupt the flow, due to an imbalance of water
density in the location of the influx. This would be short-lived once the influx ceased, however, since the salination content would rapidly
To demonstrate the dissipation phenomena pointed out above, pour some salt into one end of a container of water. The 'saltiness' will spread
throughout the container equally in a short level of time. Now try it with the water being agitated (simulating oceanic currents and storms). The
dissipation of the salt will happen much faster.
In any event, such a cessation of an oceanic current would not be like turning a switch off and on. The flow would decrease, with the rate of decrease
being a function of the imbalance of water density. One should keep in mind that the Gulf Stream flows due to prevailing winds, temperature
differentials from the sun's influence, and continental geometry. These will not change with CO2 levels. Such a decrease in flow rate would
definitely create short-term problems, but not a catastrophe; that is, unless we have somehow decided to outlaw or financially restrict heat sources
that would allow us to survive. Of course, who would even think of doing anything like that? Why, it would take some sort of major ponzi scheme like,
oh, I don't know... carbon credits and limits on CO2 production?