HR: 08:30h
AN: GP31A-03 INVITED    [Abstracts]
TI: An overview of comprehensive magnetic field modelling and its implications in combining high-resolution data sets
AU: * Sabaka, T J
EM: sabaka@geomag.gsfc.nasa.gov
AF: Raytheon at NASA Goddard Space Flight Center, Code 698, 8800 Greenbelt Rd., Greenbelt, MD 20771, United States
AB: The so called comprehensive magnetic field modelling method (CM) has proven to be a useful approach in isolating the signals from various magnetic sources near the Earth using multiple data sets, especially when those signals have similar spatial and temporal scales. New data sets are becoming available that provide higher resolution in space and time than previously seen and with this comes the need for new models of commensurate accuracy. Although this process of signal separation becomes more difficult at higher frequencies, the CMs are well placed for addressing the problem. However, new algorithms must be developed within the CM framework to achieve this goal. This talk will give an overview of the CM approach and will discuss recent advances in high-resolution modelling in space and time as it applies to satellite, observatory, marine and aeromagnetic data.
DE: 1515 Geomagnetic induction
DE: 1532 Reference fields: regional, global
DE: 1541 Satellite magnetics: main field, crustal field, external field
DE: 1555 Time variations: diurnal to decadal
SC: Geomagnetism and Paleomagnetism [GP]
MN: 2007 Fall Meeting