Rapid Changes In Earth's Core, Magnetic Field And Gravity
Full article: http://beforeitsnews.com/science-and-technology/2012/10/rapid-changes-in-the-earths-core-the-magnetic-field-and-gravity-seen-by-satellites-2484826.html
Maps of the vertical downward component (sign-changed radial component) of the core magnetic field (A) and its secular variation (B) as estimated at the CMB from the GRIMM-3 model up to spherical harmonic degree 13. The main field of the Earth’s magnetic field is generated by flows of liquid iron in the outer core. The Earth’s magnetic field protects us from cosmic radiation particles. Therefore, understanding the processes in the outer core is important to understand the terrestrial shield.
Credit: GFZ/Credit: Mandea et al. www.pnas.org/cgi/doi/10.1073/pnas.1207346109