Influence of possible inner-core motions on the polar motion and the gravity field

Details Influence of possible inner-core motions on the polar motion and the gravity field Influence of possible inner-core motions on the polar motion and the gravity field

Jan 2000

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2000pepi..117...81g&link_type=abstract

Physics of the Earth and Planetary Interiors, Volume 117, Issue 1-4, p. 81-93.

Physics

5

Scientific paper

Provided that the figure axis of the inner core coincides with the dipole axis of the geomagnetic field, the relative rotation of the oblate inner core with respect to the outer core and the mantle can be determined. Because of the density difference between the inner and outer core, the assumed precessional motion of the inner core relative to the mantle is accompanied by a mass redistribution causing variations of polar motion. Assuming standard density models, it is found that variations of polar motion caused by variations of relative inner-core rotation due to that of the real dipole axis are similar to the decadal variations derived from observed pole coordinates. Calculations of the gravity potential show that the assumed relative rotation of the inner core causes gravity changes which may be detectable by modern satellite methods during the next decade.

Affiliated with

Also associated with

No associations

Rating

Influence of possible inner-core motions on the polar motion and the gravity field does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.

If you have personal experience with Influence of possible inner-core motions on the polar motion and the gravity field, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Influence of possible inner-core motions on the polar motion and the gravity field will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-810645