Antarctic Ice May Vanish in 7,000 Years
By PAUL RECER, AP Science Writer
WASHINGTON - A natural cycle of thawing may cause an Antarctic ice
sheet as big as Texas and Colorado combined to melt away in 7,000
years, possibly causing a worldwide sea level rise of about 16 feet,
according to new research.
In a study appearing Friday in the journal Science, researchers say
that geochemical measurements of when mountainside rocks first become
free of ice near the south pole show that the West Antarctic Ice
Sheet began melting about 10,000 years ago and is still shrinking.
"There was a gradual and continuous melting," said John O. Stone,
first author of the study and a professor of geology at the
University of Washington, Seattle. Over thousands of years, he said,
the ice has retreated at the rate of about 2 inches a year in a
steady pattern that shows no sign of slowing.
. . .
"We see no evidence that it has stopped," he said. "The pattern we
see is very steady and continuous. ... We've had 10,000 years of
climate much like it is today and the ice sheet has been shrinking
continuously during that time."
In my view this is warm oceans of the inter glacial. BUT with a hint
at what exactly IS this interglacial, there may be a few things you
can say about this particular Milankovitch setting from an EMF
standpoint in terms of tilt and the elliptical orbit setting itself
closest to the earth during the Southern Ocean summer. BUT, to me
this is more interesting from a BIOLOGICAL standpoint than anything.
Because few contend that we have had a peak of the interglacial from
12,500 to 7,000 years ago BP as we exited the Wisconsonian. BUT,
geohistorically the interglacials have lasted 10,000 years. So what
Understanding EMFs and the biosphere's relationship to them leads to
likely answer. Recent Rhode Island University research of coring of
Equadorian lake beds suggests that ENSO has had its regular pattern
of 2 to 7 years for the past 5,000 years. Before then--it was
sporadic. What the researchers did--very ingenius--is xray the cores
they took of the lakes to get very exact data. What it showed is that
before 5,000 years ago El Ninos were rare--every 15-20 years and
then . . . I don't exactly recall--but I think that there were no
warm events at all.
This would make complete EMF sense (no El Ninos) during a
particularly warm period. Why? Again, the Southern Ocean moves
clockwise, from west to east. This is the direction of induction
AGAINST cirrus. Now, again, the warmer a conducter in a saline
solution--our oceans, the better it conducts. In this case, the EMF
conducts BETTER, but AGAINST cirrus formation and the infra red
warming that occurs underneath them. Now, this is where it gets
tricky (Are you reading carefully, Fred Singer?)--because the oceans
are both warmer and yet convective events cannot occur where
induction is so against the cirrus--there is no new snow/ice and old
ice melts from the warm oceans. Cold sea surface waters gyre around,
with melted ice, having no cirrus warming, and the ocean maintains a
steady state La Nina. This, in my view, is what we are already
starting to see by human fiat--a dominance of melting and La Nina.
But here is where it gets very interesting. As Milankovitch
insOlation cools the oceans, the induction patterns are somewhat
modulated. That is because a cooler ocean will not melt the ice and
send it floating to Peru AND there is less conductivity for the main
ocean, the Southern, that inducts AGAINST cirrus. Therefore cirrus
survive longer and IR balances continue to favor convection. Ambiant
storms then have a better chance to make it to Antarctica without
having their electrical basis cut off. SSTs also warm for conductive
paths of storms. Snow/ice falls to add to the ice pack and the oceans
are so cold underneath the sheets that little melts.
This takes us to what ENSO is-in the huge expanse of the tropical
oceans biological upwelling on enourmous scales occurs. It occurs in
such a way as to modulate the event itself and to cause relatively
colder SSTs to become conduc tive by their biological chemistry even
before regional SSTs warm up and become conductive just by their
Now, what does this have to do with Antarctica? Simple--the melting
is STEADY AND matches a warming peak and a modulated fall fo the
flaring cycle energies. The modulated part explains both why the
melting is so gradual and the meling part also explains how steady
the system is--made so by the biosphere.
And how crazy we are to mess with it like we are. For instance, CO2
doubled will cause pH in rainwater to go from 5.6 to 5.45--changing
its conductivity and for down the road, erosion abilitities. We are
talking about changing voltages in a highly tuned system--not smart!