The state of inner core of land is not stable

Lianksing Wen (Lianxing Wen) from the New York University (State University of New York at Stony Brook) showed that the internal radius of the solid core of Earth grew over a decade for one - one and a half kilometers (0,98 - 1,75 km), at least in one area - under the central Africa. The basis for such finding were data from two earthquakes in 1993 and 2003 in the area of the South Sandwich Islands. It turned out that the seismic waves generated by earthquakes and reflected from the surface of inner core in 2003, reached the three seismic stations in Russia and Kyrgyzstan on 39 - 70 milliseconds faster than in 1993. This suggests a local increase in the radius of inner core

in the area, located midway between the epicenter of the earthquake and seismic stations, which is under central Africa. It is believed that the growth of inner core occurs due to hardening of internal layers of the molten outer core. Local changes in the radius of inner core may be explained not only by its "growth" but also that the inner core may have rough surface with protrusions and depressions. Some data indicate that the inner core rotates about the Earth's outer layers. Therefore, the observed effect could be explained by the fact that the nucleus for 10 years, turned in such a way that, under central Africa to be more "elevated" station. That was reported by Radio Liberty.