A photo from open sources
The change of magnetic poles is included in the cage of the alleged causes doomsday, which is expected on December 21, 2012. The science today it is powerless to give an exact answer, as far as sharp polarity reversal, however, scientists continue to research this a natural phenomenon. French researchers from the University Paris VII named Denis Didro found that the change of magnetic poles can happen anytime. According to them, predict polarity reversal is possible only in 10-20 years. Longer term and an accurate forecast is not possible. Inversions of the Earth’s magnetic poles, which repeatedly occurred in the past, was accompanied by short-term disappearance of the magnetosphere. For the Earth’s biosphere it’s means the thinning of the ozone layer and the disappearance of protection from solar wind and cosmic radiation. If the “polarity reversal” will end quickly, life on our planet may survive, but if the Earth remains without a magnetic field for several years, this will mean the death of all living things, writes sunhome.ru Now Earth’s magnetic field is falling. Over the past 22 years Earth’s magnetic field has become weaker by 1.7%, and in some parts of the Atlantic Ocean, it weakened by 10%, and in several regions slightly increased. Earth’s magnetic poles were registered back in 1885. Since then the south magnetic pole shifted 900 kilometers towards the Indian Ocean, and the northern magnetic pole – towards the East Siberian magnetic anomaly. The pole drift speed is currently around 60 kilometers per year, which has never been observed before. Magnetic Earth’s poles Magnetic pole – a conventional point on the earth surface in which the Earth’s magnetic field is directed strictly beneath angle of 90 ° to the surface. North magnetic pole Moving the Earth’s north magnetic pole since the beginning of the 17th century. The location of the north magnetic pole does not coincide with geographical north pole. Around the beginning of the 17th century, the pole located under pack ice within the boundaries of the current Canadian Arctic. This causes the compass needle to point to the north is not exact, but only approximately. Every day the pole moves along an elliptical trajectory, and, moreover, is shifted in the north and northwest direction at a speed of about 10 km per year, therefore any of its coordinates are temporary and inaccurate. From the second half of the twentieth century, the pole moves pretty quickly towards Taimyr. In 2009, the speed of the north magnetic pole was 64 kilometers per year. As stated in 2005 in Ottawa Canadian Department of Geomagnetic Laboratory Natural Resources Larry Newitt, Earth’s North Magnetic Pole, at least 400 years “owned” by Canada, “left” this country. A magnetic pole that has the ability to move around from the beginning The seventeenth century located under pack ice within the boundaries of the present Canadian Arctic, went beyond the 200-mile zone of Canada. South Magnetic Pole Location of the South Magnetic Pole does not coincide with the geographic south pole. He is currently lies on the edge of Antarctica. Polarity Traditionally, the end a magnet pointing north is called north magnet pole, and the opposite end – the south. Known, however, that the same poles repel, not attract. From this it follows that the geographic north magnetic pole at which indicates the northern (blue) part of the compass needle, with physical The point of view is southern. As noted above, the difference between the geographic north magnetic pole and the north pole of the Earth insignificant. Therefore, with a certain error, you can claim that the compass with the blue part of the arrow points north (meaning both the geographic north magnetic pole and the north Earth pole). Geomagnetic poles geomagnetic poles points where the axis of the magnetic dipole (representing the main component of the expansion of the Earth’s magnetic field in multipoles) crosses the Earth’s surface. Since magnetic a dipole is only an approximate model of the Earth’s magnetic field, geomagnetic poles are somewhat different in location from true magnetic poles in which the magnetic inclination is equal to 90 °. In 1831, the English polar explorer John Ross in Canadian archipelago discovered the North Magnetic Pole – an area where the magnetic arrow is in a vertical position, i.e. the inclination is 90 °. In 1841, James Ross (John’s nephew Ross) reached the Earth’s south magnetic pole located in Antarctica.
Antarctica Arctic Time
