Some physical methods of detection of a preceding earthquake

Radon is one of many geophysical and geochemical phenomena that can be considered to be an earthquake precursor. Due to the non-linear dependence of earthquakes’ initial conditions, the question about the predictability of earthquakes often arises. The successful prediction of earthquakes is yet to be accomplished, in terms of their magnitude, location and time, and much effort has been spent on this goal. The goal of the work is to reveal new and far more reliable precursors of earthquakes. the main-point of the work is to join all the existent methods for the separate components such as Rn, He, CH4, etc.in one set with the goal to study each of them in the same sample. It means, that the result obtained for each of them, might be compared with the great reliability.