Incidences of the geomagnetic field
2006/06/01 Elhuyar Zientzia Iturria: Elhuyar aldizkaria
One of the most surprising phenomena on Earth is the inversion of its magnetic field. In the last 160 million years it has happened hundreds of times and, every time it happens, the magnetic north pole becomes the south pole and vice versa. Scientists do not know how it happens or how often.
The models used to analyze the frequency of investments have not given good results and some scientists were thinking that the phenomenon occurs frequently random. Now, however, researchers at the University of Calabria have seen that the distribution of Levy can be adequate to explain the phenomenon. This distribution is used for the study of earthquakes and some economic events and it seems that it is also useful in this case.
On the other hand, English researchers have used browser diaries to analyze the incidents that occurred in the magnetic field between 1600 and 1800. Specifically, the XIX. Until the mid-twentieth century, no systematic measurement of the magnetic field has been performed. To collect data from earlier times, scientists have resorted to rocks and archaeological objects. The newspapers of the time in which navigation had a lot of force have also been taken into account, as they provide significant data. For example, the difference between the north indicated by the Sun or stars and the magnetic north provided by the compass is very good. With all this, they hope to know better the incidences and investments of the magnetic field.
