History of Geo- and Space Sciences
History of Geo- and Space Sciences
History of Geo- and Space Sciences
Articles | Volume 15, issue 2
Articles | Volume 15, issue 2
https://doi.org/10.5194/hgss-15-81-2024
© Author(s) 2024. This work is distributed under
the Creative Commons Attribution 4.0 License.
Special issue:
https://doi.org/10.5194/hgss-15-81-2024
© Author(s) 2024. This work is distributed under
the Creative Commons Attribution 4.0 License.
Articles | Volume 15, issue 2
Article
 | 
13 Nov 2024
Article |  | 13 Nov 2024

Historical evolution of the geomagnetic declination at the Royal Observatory of Madrid

Jose Manuel Tordesillas, Francisco Javier Pavón-Carrasco, Alberto Nuñez, and Ana Belén Anquela

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Short summary
In December 2021, the agonic line crossed the Royal Observatory of Madrid on its westward drift. The previous crossing by the agonic line, drifting eastward, is not accurately dated because declination measurements of that time are scarce. After collecting the data obtained in the Iberian Peninsula over the last 500 years and reducing them to ROM coordinates, a geomagnetic declination curve was generated. As a result, the previous cross ing been the agonic line was dated around the year 1652.
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History of geophysical institutes and observatories