Friday, 31 August 2007 - 1:30 PM
5.P1.D-1

The next generation Antarctic digital magnetic anomaly map

R.R.B. Von Frese1, A.V. Golynsky2, H.R. Kim3, L. Gaya-Piqué4, E. Thébault4, M. Chiappini5, M. Ghidella6, A. Grunow7, and Admap Working Group7. (1) School of Earth Sciences, The Ohio State University, Columbus, OH 43210, (2) VNIIOkeangeologia, St. Petersburg, Russia, (3) UMBC/GEST at NASA Goddard Space Flight Center, Greenbelt, MD, (4) Equipe de Géomagnétisme, Institut de Physique du Globe de Paris, Paris, France, (5) Istituto Nazionale di Geofisica e Vulcanologia, Rome, Italy, (6) Instituto Antártico Argentino, Buenos Aires, Argentina, (7) Byrd Polar Research Center, Columbus, OH

Initiated in 1995, the Antarctic Digital Magnetic Anomaly Project (ADMAP) produced the first magnetic anomaly map of the Antarctic region south of 60oS (Golynsky et al., 2001). This map synthesized over 7.1 million line-kms of survey data available up through 1999 from marine, airborne and Magsat satellite observations. Since the production of the initial map, a large number of new marine and airborne surveys and improved magnetic observations from the Ørsted and CHAMP satellite missions have become available. In addition, an improved core field model for the Antarctic has been developed to better isolate crustal anomalies in these data. The next generation map also will likely synthesize the magnetic survey observations of the region in terms of a high-resolution spherical cap harmonic model. In this paper, we review the progress and problems of developing an improved magnetic anomaly map to facilitate studies of the Antarctic crustal magnetic field.

See more of Polar databases, repositories and maps   ORAL
See more of General Submissions

See more of The 10th International Symposium on Antarctic Earth Sciences (Aug. 26 to Sept 1, 2007)