invites applications for a post-doctoral scholarship in

Combined downward continuation and spatio-spectral concentration techniques to reconcile the geomagnetic field at the core-mantle boundary inferred from satellite observations.

Research will be devoted to developing new theoretical approaches and numerical codes for the continuation of internal geomagnetic field variations from restricted surface regions through a threedimensional electrically conducting mantle down to the CMB. The methods and codes will be applied to continuing the field over oceanic regions, motivated by the fact that magnetic observations over the oceans are less disturbed by permanent magnetization than over continents, allowing the geomagnetic field over the oceans to be determined to a higher spherical-harmonic degree than over the continents. The spatially-restricted downward continuation will map this detailed surface geomagnetic field structure onto the CMB. The knowledge gained from this model should contribute to a better understanding of the natural variability of the geomagnetic field. The acquired knowledge will provide the scientific community with a new analysis tool for modelling and interpreting existing CHAMP and future Swarm magnetic satellite observations.

Several points will be emphasized: (1) Investigation of the influence of 3-D electrical conductivity on the core field at the CMB, (2) Understanding the limitations and advantages of downward continuation in a restricted region, (3) The potential of advanced downward continuation as an additional analysis tool for satellite measurements, (4) Application to oceanic regions and geomagnetic field data, (5) Transfer of new aspects of the advanced downward continuation approach to scientific community.

Potential candidates should have a PhD in geophysics, strong theoretical background in the theory of geomagnetic field, a capability to develop innovative numerical methodologies, extensive software programming knowledge and experience in numerical code development, spectral analysis of geophysical data.

The position is available for 24 months in the first instance from April 1, 2012. The stipend will be 25,000 euro per year, tax-free.

Applicants should send a 1-2 page statement of interest, full CV,and names of three referees. Review of applications began on February 15, 2012 and the position will remain open until filled.

Enquires and applications should be sent by email addressed to Prof. Zdenek Martinec zdenek@cp.dias.ie .