EGU2020-7823
https://doi.org/10.5194/egusphere-egu2020-7823
EGU General Assembly 2020
© Author(s) 2020. This work is distributed under
the Creative Commons Attribution 4.0 License.

The French network of magnetic observatories

Vincent Lesur1 and Aude Chambodut2
Vincent Lesur and Aude Chambodut
  • 1Université de Paris, Institut de physique du globe de Paris, CNRS, F-75005 Paris, France (lesur@ipgp.fr)
  • 2Université de Strasbourg, CNRS, EOST UMS 830, F-67000 Strasbourg, France

In magnetic observatories the Earth’s magnetic field is continuously recorded and the acquired data are calibrated so that the evolution of the field can be studied on time scales ranging from seconds to decades. The French network (the so called BCMT) includes 18 observatories around the world and the different types of data produced are freely accessible on several data centres. We will describe a typical infrastructure of a magnetic observatory, the measurement techniques, the instruments used, the general processing applied to obtain calibrated data and finally the environmental constraints that have to be respected in order to acquire suitable data. If magnetic observatories were originally set to monitor the slow variations of the Earth’s main magnetic field, they are more and more often used for space-weather monitoring and to study signal generated in the ionosphere and magnetosphere. This new range of applications implies an evolution of the network, of the acquisition and distribution techniques. The strategy we developed to respond to these new challenges will be also presented.

How to cite: Lesur, V. and Chambodut, A.: The French network of magnetic observatories, EGU General Assembly 2020, Online, 4–8 May 2020, EGU2020-7823, https://doi.org/10.5194/egusphere-egu2020-7823, 2020

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