HR: 15:10h
AN: GP23B-07 INVITED     [Abstracts]
TI: Models of the Core Magnetic Field in Space and Time
AU: * Jackson, A
EM: jackson@earth.leeds.ac.uk
AF: Leeds University, School of Earth and Environment, Leeds, LS29JT United Kingdom
AU: Finlay, C
EM: cfinlay@earth.leeds.ac.uk
AF: Leeds University, School of Earth and Environment, Leeds, LS29JT United Kingdom
AU: Gillet, N
EM: nicolas@earth.leeds.ac.uk
AF: Leeds University, School of Earth and Environment, Leeds, LS29JT United Kingdom
AB: The advent of the satellite era has increased our knowledge of the magnetic field of the core. Though we remain highly dependent on observatory data for temporal control, the global coverage of satellites provides ideal data sets for increasing our resolution of the core field. We will report on new models of the field at the core-mantle boundary that we are developing which make use of new techniques in solving the inverse problem. These attempt to inject some of the underlying physics into the process in a reasonable manner. The models we create have smaller scale features than previous models, and we will discuss the repercussions for the problem of retrieval of the flow at the core surface.
DE: 1541 Satellite magnetics: main field, crustal field, external field
SC: Geomagnetism and Paleomagnetism [GP]
MN: Fall Meeting 2005