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Results of the new French Magnetic Repeat Station Network, 2012-2017 |
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TELALI A. , HEUMEZ B. , LESUR V. , COISSON P. |
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Institut de Physique du Globe de Paris |
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The French Magnetic Repeat Stations have been recently redefined to improve the effectiveness of the network. For many decades it was composed of 32 stations that were reoccupied every five years. Such a large network presented increasing weaknesses related to the land-usage modification over time. These stations were realised on semi-burried monoliths in private or public areas, sometimes in the middle of agricultural fields. To avoid station deterioration or loss, the Repeat Station Network was transformed in 2012 to ensure a better durability. All stations are now located inside minor airports, where measurements can be done during the night. This new network consists of 11 stations reduced to CLF Observatory annual mean and it is reoccupied every 2 years. We present the results of the measurements obtained during the four campaigns from 2012 to 2017 and the more recent update of the declination map over France. |
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Measurements |
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poster |
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