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Satellite Data for Magnetic Field Studies
At
present, the study of the Earth's magnetic field is carried out from
ground observatory data and, fundamentally, the information provided by
Space Agency missions. Since the 1970s we have satellites that
provide us with vector and scalar information of the Earth's magnetic
field. But it was not until 2013 when the European Space Agency
launched its first constellation - Swarm
- whose objective was to understand in detail how the Earth worked by
measuring magnetic signals from the core through the mantle, crust,
oceans, ionosphere and magnetosphere. Its orbital configuration - three
identical satellites flying two of them at the same altitude
(approximately 460 km) in parallel, and the other one
perpendicular to the other two and at a higher altitude - allows us to
know an unprecedented detail of the field. Thanks to this mission it
has been possible to better understand the origin of geomagnetic jerks,
the contribution of the oceans to the magnetic field, the electrical
nature of the Earth's interior, among other things (more information
at https://www.esa.int/Applications/Observing_the_Earth/FutureEO/Swarm).
In the Paleomagnetism group we have and are using the data from this
mission to study the latest geomagnetic jerks and, from the TEMPO
project, funded by the European Space Agency, the South Atlantic
magnetic anomaly. In addition, its data are used to study the
Lithosphere-Atmosphere-Ionosphere coupling and to develop advanced global and regional models of the geomagnetic field (for more details see the corresponding research line) .
Fuente: ESA (European Space Agency)
Here are some of the works that the Paleomagnetism group has carried out in the last years:
Puente-Borque, M., Pavón-Carrasco, F.J., Núñez, A., Tordesillas, J.M., S. A. Campuzano,
et al. Regional geomagnetic core field and secular variation model over
the Iberian Peninsula from 2014 to 2020 based on the R-SCHA technique.
Earth Planets Space 75, 128 (2023).
https://doi.org/10.1186/s40623-023-01873-w
F. J. Pavón-Carrasco, S. Marsal, S. A. Campuzano,
J. M. Torta (2021) Signs of a new geomagnetic jerk between 2019 and
2020 from Swarm and observatory data. Earth Planets Space. 73, 175.
DOI: 10.1186/s40623-021-01504-2.
P. Alken, E. Thébault, C. D. Beggan, H. Amit, J. Aubert, [...], F. J. Pavón-Carrasco,
[...], Y. Yang, Z. Zeren, B. Zhou (2021). International Geomagnetic
Reference Field: the thirteenth generation. Earth, Planets and Space,
73, 49.
F. J. Pavón-Carrasco, S. Marsal, J. M. Torta, M. Catalan, F. Martín-Hernández,
J. M. Tordesillas (2020). Bootstrapping Swarm and observatory data to
generate candidates for the DGRF and IGRF-13. Earth, Planets and Space,
72, 152, doi.org/10.1186/s40623-020-01198-y
F. J. Pavón-Carrasco
& A. De Santis (2016) The South Atlantic Anomaly: The Key for a
Possible Geomagnetic Reversal. Frontiers in Earth Science. 4:40. doi:
10.3389/feart.2016.00040.
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