Resolution No.12 (1991):
ARISTOTELES satellite mission

IAGA recognising that time scales of directly observable geomagnetic main field changes range from years to centuries and that measurement of changes over the entire range of periods is crucial for the study of properties of the Earth's core and lower mantle and of the coupling between the two; recognising that high resolution measurements of the geomagnetic anomaly field can provide significant information about the lithosphere and its tectonic structure in a detail never before achieved and that the acquisition of satellite magnetic field data of high accuracy is a crucial part of such measurements and noting that twelve years have passed since the acquisition of suitable satellite magnetic field data, urges most strongly ESA and NASA that they give their plans for the ARISTOTELES mission a high priority.

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