| Autor: |
Pavón-Carrasco, F. Javier, Marsal, Santiago, Campuzano, Saioa A., Torta, J. Miquel |
| Rok vydání: |
2021 |
| Předmět: |
|
| DOI: |
10.6084/m9.figshare.16550968.v1 |
| Popis: |
Additional file 1. The 2020-jerk in geomagnetic observatory and Swarm data. Figure S1. Monthly means of the East geomagnetic component Y (yellow dots) and the estimations from CHAOS-7.7 model at the same locations (red and blue lines). For an appropriate comparison, the average Y values for the whole time interval have been removed (see text for details). Note that after August 2020 the estimations from CHAOS-7.7 (blue lines) are likely caused by the model regularization instead of the data (see “Discussion: a global view from geomagnetic models” Section of the main text for more details). Figure S2. Double linear fit of the Y-component SV at geomagnetic observatories leading to the values of Table 1 (see main text). a and b refer to the 2017-jerk, while c through g correspond to the 2020-jerk. Figure S3. Yellow dots: SV of the East component Y from Swarm-A data relocated at 440 km altitude over the indicated observatory locations (see main text for details). Red and blue curves: SV estimation from CHAOS-7.7 model. Note that after August 2020 the changes in the curves (blue lines) from CHAOS-7.7 are likely caused by the model regularization instead of the data (see “Discussion: a global view from geomagnetic models” Section of the main text for more details). Figure S4. SA power for each harmonic coefficient from the CHAOS-7.7 model until degree n = 8 at the CMB. Vertical blue bands indicate the epochs of the reported jerks. Note that after mid-2020 the SA power curves from CHAOS-7.7 are biased by the model parametrization instead of the geomagnetic data providing unreliable values (see “Discussion: a global view from geomagnetic models” Section of the main text for more details). |
| Databáze: |
OpenAIRE |
| Externí odkaz: |
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