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A geomagnetic reversal is a change in the Earth's magnetic field
such that the positions of magnetic north and magnetic south are interchanged.
The Earth's field has alternated between periods of normal polarity,
in which the direction of the field was the same as the present direction,
and reverse polarity, in which the field was in the opposite direction.
These periods are called chrons. The time spans of chrons are randomly distributed
with most being between 0.1 and 1 million years. Most reversals are estimated to take
between 1,000 and 10,000 years. The latest one, the Brunhes–Matuyama reversal,
occurred 780,000 years ago. Brief disruptions that do not result in reversal are called
geomagnetic excursions.
The rate of reversals in the Earth's magnetic field has varied widely over time.
72 million years ago (Ma), the field reversed 5 times in a million years.
In a 4-million-year period centered on 54 Ma, there were 10 reversals;
at around 42 Ma, 17 reversals took place in the span of 3 million years.
In a period of 3 million years centering on 24 Ma, 13 reversals occurred.
No fewer than 51 reversals occurred in a 12-million-year period,
centering on 15 million years ago.
These eras of frequent reversals have been counterbalanced by
a few "superchrons" – long periods when no reversals took place... .
Some scientists have produced models for the core of the Earth
wherein the magnetic field is only quasi-stable and the poles can
spontaneously migrate from one orientation to the other over the course
of a few hundred to a few thousand years.
Other scientists propose that the geodynamo first turns itself off,
either spontaneously or through some external action...
and then restarts itself with the magnetic "North" pole pointing either North or South.
External events are not likely to be routine causes of magnetic field reversals...
An early mention of a shifting of the Earth's axis can be found in an 1872 article entitled "Chronologie historique des Mexicains"[7] by Charles Étienne Brasseur de Bourbourg, a specialist in Mesoamerican codices who interpreted ancient Mexican myths as evidence for four periods of global cataclysms that had begun around 10,500 B.C.
Cells in the human body require a pulsed magnetic field and magnetic resonance stimulation in order to catalyze the reactions that take place every second. When Yuri Gagarin made that historic first manned flight into space we did not know how vital these two processes were to life on earth. Because these two processes were not simulated by technology for Yuri Gagarin when he left earth he experienced depressed metabolism, mental depression, bone loss, muscle degeneration, impaired perception and over all fatigue.
Yuri Gagarin was only in space for 108 minutes.. I can only imagine what prolonged magnetic malnourishment would do to life on earth. But not only that, when the magnetic field stabilises it will be completely different anatomically than what it is now. So how different will our cells react if we do survive long enough to 'Adapt' to this new field?
Palaeomagnetic results from lava flows recording a geomagnetic polarity reversal at Steens Mountain, Oregon suggest the occurrence of brief episodes of astonishingly rapid field change of six degrees per day. The evidence is large, systematic variations in the direction of remanent magnetization as a function of the temperature of thermal demagnetization and of vertical position within a single flow, which are most simply explained by the hypothesis that the field was changing direction as the flow cooled.
Originally posted by rstregooski
reply to post by shaneR
Lesser discussed by many is the scientific evidence that the magnetic poles have shifted as much as 6 degrees per day...
Palaeomagnetic results from lava flows recording a geomagnetic polarity reversal at Steens Mountain, Oregon suggest the occurrence of brief episodes of astonishingly rapid field change of six degrees per day. The evidence is large, systematic variations in the direction of remanent magnetization as a function of the temperature of thermal demagnetization and of vertical position within a single flow, which are most simply explained by the hypothesis that the field was changing direction as the flow cooled.
New evidence for extraordinarily rapid change of the geomagnetic field during a reversal...
Palaeomagnetic results from lava flows recording a geomagnetic polarity reversal
at Steens Mountain, Oregon suggest the occurrence of brief episodes of astonishingly
rapid field change of six degrees per day
Originally posted by shaneR
reply to post by rstregooski
So my original question is still:
what would the PHYSICAL results be...
eg: we dont really notice the geomagnetic field, as such...
so i am asking whether the whole Earth is going to spin around
so it becomes upside down ( compared to now...)
eg Antarctica where Siberia is, and vice-versa...
OR: is it just the actual magnetism that will be reversed...???
thanks again,
+ seeya...
Originally posted by shaneR
reply to post by rstregooski
hi rstregooski,
thanks for the reply...
and the link,
very interesting...
(from your link...)
Palaeomagnetic results from lava flows recording a geomagnetic polarity reversal
at Steens Mountain, Oregon suggest the occurrence of brief episodes of astonishingly
rapid field change of six degrees per day
6 degrees (per day) x 30 days = 180 degrees in ONE MONTH...
wow... 180 degrees = opposite...
So my original question is still:
what would the PHYSICAL results be...
eg: we dont really notice the geomagnetic field, as such...
so i am asking whether the whole Earth is going to spin around
so it becomes upside down ( compared to now...)
eg Antarctica where Siberia is, and vice-versa...
OR: is it just the actual magnetism that will be reversed...???
thanks again,
+ seeya...
Originally posted by shaneR
Hi Everyone,
hope your all well...
i have been thinking about the possibility of a "POLE SHIFT" for a long time now...
+ i always wondered what would be the actual physical outcome of such an event...
and also the mechanisms involved.
Firstly, is it accepted as fact, that
the magnetic poles themselves "wander",
and from time to time end up in areas
opposite to what we have now...???
A geomagnetic reversal is a change in the Earth's magnetic field
such that the positions of magnetic north and magnetic south are interchanged.
The Earth's field has alternated between periods of normal polarity,
in which the direction of the field was the same as the present direction,
and reverse polarity, in which the field was in the opposite direction.
These periods are called chrons. The time spans of chrons are randomly distributed
with most being between 0.1 and 1 million years. Most reversals are estimated to take
between 1,000 and 10,000 years. The latest one, the Brunhes–Matuyama reversal,
occurred 780,000 years ago. Brief disruptions that do not result in reversal are called
geomagnetic excursions.
The rate of reversals in the Earth's magnetic field has varied widely over time.
72 million years ago (Ma), the field reversed 5 times in a million years.
In a 4-million-year period centered on 54 Ma, there were 10 reversals;
at around 42 Ma, 17 reversals took place in the span of 3 million years.
In a period of 3 million years centering on 24 Ma, 13 reversals occurred.
No fewer than 51 reversals occurred in a 12-million-year period,
centering on 15 million years ago.
These eras of frequent reversals have been counterbalanced by
a few "superchrons" – long periods when no reversals took place... .
en.wikipedia.org...
So, i was hoping we could get some ATS input on the difference, if any,
between "POLE SHIFT" and "geomagnetic reversals"...
As i see it, a "geomagnetic reversal" would just involve the actual magnetic poles
ending up "reverse" of what they are now...with no actual effect on the land masses themselves...
(although it might affect birds, and other lifeforms)... + navigation etc...
But would a "pole shift" ( if it is different ) actually be like the Earth "tipping over",
and the landmasses themselves ending up in different latitudes and longitudes...???
Some scientists have produced models for the core of the Earth
wherein the magnetic field is only quasi-stable and the poles can
spontaneously migrate from one orientation to the other over the course
of a few hundred to a few thousand years.
Other scientists propose that the geodynamo first turns itself off,
either spontaneously or through some external action...
and then restarts itself with the magnetic "North" pole pointing either North or South.
External events are not likely to be routine causes of magnetic field reversals...
see: wikipedia.org + (Earth's_magnetic_field) couldnt fix link SORRY...
By the way, polar shift hypothesis, etc, is not exactly a new idea...
An early mention of a shifting of the Earth's axis can be found in an 1872 article entitled "Chronologie historique des Mexicains"[7] by Charles Étienne Brasseur de Bourbourg, a specialist in Mesoamerican codices who interpreted ancient Mexican myths as evidence for four periods of global cataclysms that had begun around 10,500 B.C.
en.wikipedia.org...
+ i always found that date ( 10,500 BC ) to be interesting...
( "maps of the ancient sea kings " - Charles Hapgood )
+ Immanuel Velikovsky ... etc ... but thats another story...
Anyway, i know theres a lot of "EXPERTs" here on ATS,
so i was hoping we could just discuss the mechanisms,
and actual physical results of a polar shift, or geomagnetic reversal...
(not looking for Elenin predictions or 2012 stuff, just interested in FACTS, please )...
thanks for your interest, if any,
+ seeya...
edit on 29/7/2011 by shaneR because: fix linkedit on 29/7/2011 by shaneR because: fix stupid link AGAINedit on 29/7/2011 by shaneR because: fix stupid link AGAIN again, anf failed sorry