Re: OT: Global Warming


"Richard Burke" <no@xxxxxxxxxxxxx> wrote in message
news:no-D489F6.17354616122008@xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx
In article <-dCdnV-PopZJTtrUnZ2dnUVZ_jadnZ2d@xxxxxxxxxxxx>,
"Stanley Moore" <smoore20@xxxxxxxxxxx> wrote:

The problem is not wandering of the magnetic pole, it is the weakening of
it. Less of a magnetic field means more deleterious radiation from space
will reach the surface. This will affect plant and animal life adversely.
But since pole reversals have happened many many times before and life
has
gone on it may not be too bad for living beings as a whole though for
individuals it might be pretty dire. Take care

Almost no radiation makes it to the ground, as it happens. The
atmosphere absorbs it. During a solar storm, at 100 miles up, the
radiation is instantly deadly; at the height of a cruising aeroplane,
several hours' exposure amount to less radiation than a chest x-ray; and
at ground level, things are just fine.

The radiation has two components - electromagnetic - x-rays, UV, etc -
and these are soaked up in the ionosphere; and direct proton bombardment
- the solar wind. These are the ones that are mostly channeled down to
the poles by the magnetosphere. They create the auroras - which
essentially turn a proton storm into a pretty visual display about 50
miles above Earth's surface. Without a magnetosphere, the huge protons
storms which are harmless at the poles will be spread over half the
Earth's surface - massively diluting their almost negligible threat.
They'll be so mild, you probably won't even see an aurora at all.

What *will* be at risk is unshielded satellites. No atmosphere to
protect them - and now no van Allen belts channelling those energetic
protons away form their complicated electronics.

Sorry. I know this stuff because I made a TV show about it last year.
The execs kept asking me to make out it was all terribly dangerous - and
it just... isn't... Amazing, yes. Dangerous, no.

Richard

Was it the one I saw last week on Science Channel or maybe National
Geographic? Because they mentioned the things you did but said their would
be auroras at low latitudes. They did mention that no extinctions are
associated with pole reversal but IIRC there were some deleterious effects.
I need to search that show out again. I know they said nothing drastic would
happen to life though there was some concern if all our electricity based
civilization would be affected. Take care
--
Stanley L. Moore
"The belief in a supernatural
source of evil is not necessary;
men alone are quite capable
of every wickedness."
Joseph Conrad


.

Relevant Pages

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