Comments on the Earth's Figure

Details Comments on the Earth's Figure Comments on the Earth's Figure

Oct 1969

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1969natur.224..254p&link_type=abstract

Nature, Volume 224, Issue 5216, pp. 254-255 (1969).

Physics

Scientific paper

OSMASTON1 has pointed out that core convection might have important consequences with regard to the Earth's figure and continental drift, and that it is an extremely powerful cause of oblateness. He suggests that observations of J2 might indicate the amount of change in the magnetic field in the core and therefore the amount of core convection. He seems to be saying that the angular momentum of the Earth can be expressed as where C and ω are the polar moment of inertia and angular velocity and 1, 2, 3 refer to the inner core, outer core and mantle respectively. The mantle and the crust are assumed to be rotating at the same speed; the transfer of angular momentum between solid and fluid parts of the Earth of this kind has also been suggested by Munk and MacDonald2.

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