On October 24, 2022. Prof. Jean Rasson of the Royal Meteorological Institute of Belgium gave an online PIFI lecture entitled “Introduction to Geomagnetic Observation” at the invitation of Researcher YE Xin, Director of the Space Optics Department.

Prof. Rasson received his Ph.D. in physics from the University of Leuven, Belgium, and served as the head of Geophysical Centre of Dourbes and director of the Geophysics Department at the Royal Meteorological Institute of Belgium. He has participated in a number of important research projects, including: ‘Observation of Geomagnetic field: Novel Ways in Instrumentation for Field and Unattended Operation’ and ‘Application of GIS Techniques through GNSS and Geomagnetic Instrumentation’.

During the lecture, Professor Rasson explained the description method of the geomagnetic field in the surface coordinate system, the measurement principle of the geomagnetic field and introduced various sensors that can measure the geomagnetic field. He then introduced the design and calibration process of the fluxgate instrument in detail. Finally, he gave a brief introduction about the geomagnetic observation stations and geomagnetic observation networks on the earth's surface.

After the lecture, the online and offline audience had an in-depth discussions with Professor Rasson.

i

This lively and informative lecture strengthened the academic ties between CIOMP and other internationally respected research institutions. New technologies and methods of geomagnetic measuring instruments covered in the lecture provide inspirations for the development of our own instruments. In terms of training, it helps our staff and students stay informed about cutting-edge research and technology in other countries.

This lecture is funded by Chinese Academy of Sciences President's International Fellowship Initiative Grant No. 2021VEA0010.