HR: 11:20h
AN: GP21D-05    [PDF]
TI: Magnetic Crustal Thickness and Heat Flow in Antarctica
AU: * Fox Maule, C
EM: foxmaule@gfy.ku.dk
AF: Danish Center of Planetary Science, Juliane Maries Vej 30, Copenhagen, DK-2100 Denmark
AU: Purucker, M
EM: purucker@geomag.gsfc.nasa.gov
AF: Raytheon ITSS at Geodynamics Branch, Goddard Space Flight Center, Greenbelt, MD 20771 United States
AU: Olsen, N
EM: nio@dsri.dk
AF: Danish Center of Planetary Science, Juliane Maries Vej 30, Copenhagen, DK-2100 Denmark
AB: The magnetic crustal thickness in Antarctica is determined through inversion of satellite magnetic data. From an initial model of the magnetic crust, the magnetic field at satellite altitude is calculated, and compared to the observations, taken to be the magnetic field models based on CHAMP and Oersted data. The difference between the modeled field and the observations is then inverted into a correction to the crustal model. By adding the correction to the initial model, an improved model for the magnetic crustal thickness is obtained. Connecting the magnetic crustal thickness to the Curie depth and the Curie temperature, we have attempted to extract information about the regional geothermal heat flux underneath the ice cap.
DE: 1500 GEOMAGNETISM AND PALEOMAGNETISM
DE: 8124 Earth's interior--composition and state (old 8105)
DE: 8130 Heat generation and transport
SC: Geomagnetism and Paleomagnetism [GP]
MN: 2003 Fall Meeting