Resolution No.10 (1989): High accuracy geomagnetic field observation by satellites

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; recognising that the acquisition of satellite magnetic field data of high accuracy is a crucial part of such measurements and noting that ten years have passed since the acquisition of suitable satellite magnetic field data urges again most strongly that plans for satellite measurements of the geomagnetic field at both low altitude and of long duration be given the highest priority for implementation.