Earth's magnetic poles have to flip over several times

The earth's magnetic field also have occurred many times the field reverses. According to the geology and the fossil record, scientists estimate that over the past 3 billion years, geomagnetic JIS 5K Plate flanges flip happened at least hundreds of times. And the frequency of the earth's magnetic poles reverse it is always changing, seems to be in the dinosaur s interval only occurs once millions of years, in the past 20 million years, the reversal has emerged as a model in 200000-300000 period. Just from a recent turn time period is more than 600000 years.

From the sea floor of deep-sea sedimentary columnar samples show that the earth's magnetic poles are offset. Since in the astm a234 CS seamless elbow R=1.5D early 19th century by explorers first accurate positioning, geomagnetic North Pole to the north to move slowly about 1100 km. In fact, the north magnetic pole movement speed is faster, as early as the beginning of the 20th century, its movement speed is about 16 km a year. And the movement speed is about 64 km a year.

Some people mistakenly believe that reversal can lead to earth's magnetic field to temporarily disappeared, the earth's magnetic field protects us from solar flares and coronal mass ejection. So, there was "the end of the world". But there is still no evidence that the magnetic field one R=3D 45 degree Pipe Fitting Bend day disappear. Weakening of the geomagnetic field is sure to lead to the surface by the sun radiation is a little rise, low latitudes may appear beautiful aurora, but you don't have any creatures died. By the fossil record, you can see several times before magnetic flip, the earth and live on earth, the animals didn't happen any dramatic changes, even the glacier activities did not change.