Such calculations were completed and gave disappointing results: if such a seismmagnetic effect exists, then it is very insignificant and certainly cannot reduce the action of a large permanent magnet to zero. There are very few facts of predicting the earthquake of changing the magnetic field of the Earth, and it is impossible to draw any certain conclusions so far. Electric methods of "probing" of the earth's crust can also be told something.
A fantastic message about an increase in the electrical resistance of rocks - by 14%! - Before the earthquake came from China. Other scientists, on the contrary, drew attention to a decrease in this indicator. Today it is not entirely clear why such changes are taking place: after all, two processes are acting at the same time - the seal of material, leading to a decrease in the environmental resistance of an electric current, and cracking with displacement of liquids from cracks and pores, causing the opposite reaction. Perhaps in various breeds this or that mechanism of changes in electrical properties receive an advantage. The archival materials of seismologists are very rich in facts interesting for geophysicists. Adherents of various physical research methods can choose what seems more suitable for them to prevent emissions in coal mines. And the search continues. Often, new data is difficult to evaluate from the point of view of their momentary practical use. But tomorrow. One of the American botanists believes that earthquakes can be registered in trees. This is explained by the same facts as the change in the electrical resistance of the breeds: formidable phenomena sharply change the conditions in which the forest lives. Cracks and faults in the soil cause damage to the roots. Catastrophic lowerings or lifts of the terrain can change the illumination or supply of trees with soil water. All this will affect the growth of trees. Finally, in the rings of growth, the desire to straighten up, tilted up by movement of the soil of the tree, can be reflected. Botanik believes that even the strength of the long -resulting earthquake is able to determine by the rings, and, moreover, not by eye, but in points. He checked his theory in Alaska and found signs on the sections of old trees, noting a strong earthquake of 1899. If so, then how much can be told by scientists of cryptomeria - evergreen coniferous trees, the average age of which is about a thousand years! Some of their copies growing in Japan on the island of Yaku - one of the most active seismic areas of the world, have been living in the world for 2200 years. https://inscribemedia.co.uk/online-casinos/rainbow-riches/