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The BGS goes on to say that Earth’s magnetic field has had many highs, lows and reversals in its past, with the last reversal taking place around 800,000 years ago. I take issue with this date because there have been many magnetic reversals since that time.
There's the Gothenburg magnetic reversal of 11,500 years ago, when the mammoths went extinct.
There's the Mono Lake magnetic reversal of 23,000 years ago, when the earth descended into catastrophic glaciation.
There's the Lake Mungo magnetic reversal of 33,500 years ago, when the Neanderthals went extinct.
And there are several others, such as the Laschamp, the Blake, Biwa I, Biwa II, Biwa III ... the list goes on. (See Magnetic Reversal Chart.)
There's even the Big Lost magnetic reversal of 640,000 years ago, when - just by coincidence? - the Yellowstone supervolcano erupted.
In fact, my research shows that our planet undergoes a magnetic reversal about every 11,500 years and, agreeing with the BGS on this point, I think the next reversal is now due.
The problem is that a magnetic reversal could be disastrous.
As I warn in "Not by Fire but by Ice": "Polarity reversals, equinoctial precession, and ice ages, all march to the same drummer. As do extinctions, new species appearance, volcanism, and rising land. Toss in the specter of massive floods, 30-story tsunami (tsunami is both singular and plural), and radioactivity falling on your head, and you've got the picture."
The MSM certainly seems to be unable at times to report science well. Not sure why you distrust academics.
The ice core samples were examined under microscopes at the iron isotopes and found to have polarization variations. Granted they are on a microscopic level but as far as I can tell, all of those samples are still preserved and available to other scientists to examine. Whether or not they showed a reversal or a wandering event is not completely verifiable globally as I am not aware of Antarctic ice core samples.
My trouble with MSM academics is that they seem to follow some sort of agenda.
Back when Darwin wrote his book, he was mocked. Then eventually, people who do not follow his book are mocked.
Seems like a flip in political academics. But these are the kind of people who discredit Pluto as being a planet and have it removed to add two other rocks in out outer fringes.
Originally posted by stereologist
reply to post by OuttaTime
Are you thinking ice cores when the cores where actually sediment cores in the oceans or on land?
Actually people that followed his work today would be challenged. You misunderstand the process if you think it is mocking. The idea is to challenge new concepts. They can be as powerful as Darwin's work or as unknown as issues about the reliability of certain staining techniques used in biological research.
Pluto was always an odd duck. Now other objects are being found that are like Pluto. They are Pluto sized and so Pluto is now recognized as being part of a different class of objects in the solar system. Pluto was not discredited. It is important to avoid anthropomorphisizing celestial objects.
global temperatures were 5 to 10 degrees Fahrenheit higher than they are today, the sea level was approximately 75 to 120 feet higher than today, there was no permanent sea ice cap in the Arctic and very little ice on Antarctica and Greenland
In fact, my research shows that our planet undergoes a magnetic reversal about every 11,500 years and, agreeing with the BGS on this point, I think the next reversal is now due.
Hence the Al Gore religion.
It is also SIG academics that cite ugly inconsistencies with job numbers and unemployment figures.
The IPCC has been caught tampering with data, as well as NASA and the NOAA.
Historian academics have drawn a line in the sand at around 5,000 BC as a limit of archyaeology they are willing to support. History in the classroom still indoctrinates students to think Columbus discovered America, and that Venus and Mars have always been desolate rocks.
They are told about what they can do about 'global warming' and their 'carbon footprint', yet those agendas are pet projects of the Cap & Trade profiteers and energy barons.
Financial academics make every effort to convince us that we need to keep printing and borrowing money. We know this is a huge mistake, but to the average MSM viewer, they are pummeled with lies and disinfo on a daily basis.
Like they say, if you keep parroting the same story loud enough and often enough, people tend to believe it, whether it is true and accurate or not. Academics and geopolitical agendas are what has put us in 4 different wars now, with the end goal of controlling the resources.
That's just my take on the MSM academian./quote]
BTW, MSM means main stream media. If you think that the people in the MSM are academically minded I would argue that they are not. I would also suggest that economists and financial forecasters are not academics. They can tell you exactly what happened after the fact, yet seem unable to detect that huge and catastrophic events are about to happen. They are a laughable group of charlatans.
I think it was Gailbraith that once quipped that economic forecasters serve the purpose of making astrology look legitimate.
The vostok samples are ice cores, although there were also sediment samples taken for the seabed also.
When the book was published, other scholars found the idea that we evolved from apes as preposterous, and they called him ape man and such. He became an academic outcast. His ideas were not politically correct a century ago. The popular consensus back then was more relying on the biblical Genesis. The process of thought has progressed vastly in the last few decades and we have found ourselves in a brand new realm of thought and theory. A hundred years ago, quantum physics would have not been accepted as much as it is today.
These eras of frequent reversals have been counterbalanced by a few "superchrons" – long periods when no reversals took place.
This suggests a possible coupling between Earth's core magnetofluid dynamo sphere and the atmosphere-hydrosphere during an abrupt catastrophic climate event.
Through analysis of seafloor magnetic anomalies and dating of reversal sequences on land, paleomagnetists have been developing a Geomagnetic Polarity Time Scale (GPTS). [bold]The current time scale contains 184 polarity intervals in the last 83 million years[/bold].[8][9]
Changing frequency of geomagnetic reversals over time
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. Two reversals occurred during a span of 50,000 years. These eras of frequent reversals have been counterbalanced by a few "superchrons" – long periods when no reversals took place.[10]
As with many other incidents, even with Darwin, we live in a society that loves political correctness. People with ideas outside the box have a smaller impact than the guy with politically correct ideas.
Originally posted by stereologist
reply to post by OuttaTime
As with many other incidents, even with Darwin, we live in a society that loves political correctness. People with ideas outside the box have a smaller impact than the guy with politically correct ideas.
As far as the general public is concerned that is true, but in scientific circles that is not.
Within an academic environment the issue is based on the facts and not what some dubious public pressure wants the facts to say. A sensational cover article by Time a few years back suggested that a woman's chance of marriage after a certain age was lower than the chance of being killed by a terrorist. The poorly written article probably sold magazines, but it was wrong. Of course, it colored people's outlook, but it was wrong. The study it referenced was not properly done and that was pointed out by the US Census Bureau. That did not stop Time from running the article. There are many other examples of that sort of trashy article such as the claim of a link between caffeine and cancer.
These are examples of ideas that are outside of the box. They had an impact. They were just plain wrong. How did they get it wrong? They did not follow through on the methods scientists use to test ideas.
Want another example of an idea out of the box? Consider cold fusion. Personally, I think people like hearing about ideas outside of the box. Think about all of the famous scientists you can. Were any of them inside of the box? No. They were all outside of the box: Archimedes, Kepler, Newton, DaVinci, Einstein, Bohr, ...
Originally posted by stereologist
reply to post by OuttaTime
The problem with the Sun or another celestial body altering the orientation of another bodies magnetic field is that it would take a great deal of energy, far more than is available. The Sun switches every 11 years on average. How come the Earth switches every tens of thousands at the fastest?
Not all planets may have a magnetic field. Or that field may be small. The strength of the Earth's field increases as you go into the Earth. In fact, less than 2% of the field strength is experienced at the surface.
In space the field strength is around 25nT. The surface field strength can be up to 0.6G.
1T = 10^4 G
1nT = 10^4 nG = 0.00001 G
You can see that the field strength in space is miniscule compared to the surface strength which in turn is small compared to the core strength of the field. It is doubtful that the Sun can exert much influence over the core where our field is generated.
It seems a bunch of the science you hear about in the news is all about sensationalism and ratings. Very very few of our founding scientists were inside the box. Hearing ideas outside the box seems to fascinate and encourage people, whether it is true or not.
Yet we are expected to believe that science is still pure, uncorruptible and that there is no agenda behind the research? I think not.