Is the Inner Core of the Earth Partially Molten?
Paper number: U22A-18 Author: Singh, S C E-mail: singh@ipgp.jussieu.fr Départment de Seismologie, Institut de Physique du Globe de Paris, 4 Place Jussieu, Paris, F-75252 France Author: Taylor, M A E-mail: taylor@esc.cam.ac.uk Bullard Laboratories, University of Cambridge, Madingley Road, Cambridge, CB3 0EZ United Kingdom Author: Montagner, J E-mail: montagner@ipgp.jussieu.fr Départment de Seismologie, Institut de Physique du Globe de Paris, 4 Place Jussieu, Paris, F-75252 France Abstract: Our information about the inner core comes primarily from seismological observations. We have estimates for the P-wave velocity and it’s directional dependence in the inner core, S-wave velocity, and P- and S-wave attenuation. The P-wave velocity appears to vary with depth between 11.04 and 11.26 km/s, while the S-wave velocity is less well constrained, but thought to be less than 3.65 km/s. The P-wave velocity along the pole axis has been observed to be 3 – 4% higher than that in the equatorial plane
