RUSSIAN JOURNAL OF EARTH SCIENCES, VOL. 17, ES2002, doi:10.2205/2017ES000597, 2017 ![]() Figure 2. Schematic plot of the technique for the discrimination of signal and noise from the power spectral density of ULF variations. Copyright 2017 by the Geophysical Center RAS. Generated from LaTeX source by ELXpaper, v.1.5 software package. |