Geophysics

2412 Submissions

[2] viXra:2412.0097 [pdf] submitted on 2024-12-16 14:17:11

Earth’s Magnetic Field Modelled with a Variable Speed Inner Core

Authors: P. G. Vejde
Comments: 4 Pages.

Recent data on the paleomagnetic and seismic record show that the solid inner core rotates faster than the mantle and is consistent with an elongated volume and 10 degree tilt in the north south axis. Using this data it is argued that the liquid core circulates around the earths equatorial plane and has a speed differential across its radius. And that it is this which drives the dynamo mechanism powering the earth’s magnetic field. It is also argued that the polarity reversals and drift observed in the data record are consistent with precession of and various changes in the shape, rotational speeds and angle of the north south axis of the solid inner core relative to the mantle.
Category: Geophysics

[1] viXra:2412.0033 [pdf] submitted on 2024-12-06 21:50:04

Reflections on the Methods of Representing the Terrestrial Gravity Field

Authors: Abdelmajid Ben Hadj Salem
Comments: 10 Pages. In French

In this report, I present the reflections from my colleague Abdelkader Sellal on the methods of representing the terrestrial gravity field and his proposals on the subject to encourage the young geodesists to discover these methods.
Category: Geophysics