File:Global Map of Martian Magnetic Anomalies PIA02059.jpg

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Summary

Description	English: The radial magnetic field measured is color coded on a global map that slows the larger craters and volcanoes (dark green), spacecraft tracks below 200 km (light green), and the dichotomy boundary (solid line).
Date	18 March 2014, 22:07:25
Source	http://photojournal.jpl.nasa.gov/jpeg/PIA02059.jpg
Author	NASA/JPL/GSFCNASA/JPL/GSFC

Taken by the Mars Global Surveyor Orbiter as part of the Mars Global Surveyor (MGS) mission on 23 June 1999

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