Chaotic variability of the magnetic field at Earth's surface driven by ionospheric and space plasmas

It is shown that the universal chaotic/turbulent processes in space (solar wind and magnetosphere) and in ionospheric plasmas drive the chaotic temporal variability and determine the level of randomness of the magnetic field at Earth's surface in the temporal range from a few hours to a few years. The results of observations provided by the spacecraft and satellite missions, and the global magnetic observatory network were used for this purpose. A good agreement has been established between the results of observations and a theoretical approach based on the Kolmogorov-Iroshnikov phenomenology in the frames of distributed chaos notion.