The component of 29.8 years in polar motion and ∆ l.o.d. and oscillation of the earth's inner core.

Abstract

This paper deals with the components of pcriod of 29.8 yr in polar motion and △ I. o. d. The oscillation of inner core (OIC), as a most possible cause of them, is proposed. Parameters of oscillation are found and its effects on Earth's mass center (EMC), distance of observatories to EMC, gravity and latitude are estimated.