Physics
Scientific paper
Oct 2011
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2011epsc.conf..931h&link_type=abstract
EPSC-DPS Joint Meeting 2011, held 2-7 October 2011 in Nantes, France. http://meetings.copernicus.org/epsc-dps2011, p.931
Physics
Scientific paper
Planetary dynamos, resulting from fluid flow in electrically conductive parts of their interior, are thought to be highly time dependent. Currently, our understanding of temporal variation of these fields is limited because we only have observations for one example - the Earth. To overcome this, data acquired by 5 NASA space missions between 1973-2003 are being used to investigate possible time variation of Jupiter's magnetic field. Previous attempts to model jovimagnetic secular variation (JSV) have been inconclusive or ineffective for a number of reasons, including limited data usage, inadequate consideration of the magnetodisk field and the modelling approach taken. We attempt to resolve these issues here, by using all data avaliable within 12 RJ , establishing and removing the magnetodisk field for each individual orbit and taking an alternative, regularised minimum norm aproach to modelling the internal planetary field, thus permitting a higher resolution inversion.
Holme Richard
Ridley V. A.
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