Physics
Scientific paper
Dec 2002
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2002agufm.p62a0372r&link_type=abstract
American Geophysical Union, Fall Meeting 2002, abstract #P62A-0372
Physics
1517 Magnetic Anomaly Modeling, 5440 Magnetic Fields And Magnetism, 6225 Mars
Scientific paper
In this study we report modeling results for anomalies within the region of high field strength in the southern hemisphere of Mars, between 130°E and 240°E. A high resolution magnetic field map of the southern hemisphere produced using mapping phase (approx. 380-450 km altitude) Mars Global Surveyor data has been used to determine the approximate locations of the anomalies within the cluster. An iterative modeling technique (Hood and Zakharian, JGR, v. 206, p. 14601, 2001) has then been applied (assuming circular sources of uniform magnetization and variable diameter) to estimate approximate bulk directions of magnetization, paleomagnetic pole positions and lower limits on bulk magnetization. The estimation of the lower limits on bulk magnetization for the strongest Martian anomalies will indicate whether the presence of unusually highly magnetized material is necessary to explain Martian crustal anomalies or whether they can be explained by large areas of lower bulk magnetization materials. Models for the southern hemisphere anomaly cluster and required bulk magnetizations will be presented at the time of the conference.
Hood Lon L.
Richmond Nicola C.
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