Abstract
The production of quasi-definitive data at Ebre observatory has enabled us to detect a new geomagnetic jerk in early 2014. This has been confirmed by analyzing data at several observatories in the European-African and Western Pacific-Australian sectors in the classical fashion of looking for the characteristic V shape of the geomagnetic secular variation trend. A global model produced with the latest available satellite and observatory data supports these findings, giving a global perspective on both the jerk and a related secular acceleration pulse at the core-mantle boundary. We conclude that the jerk was most visible in the Atlantic and European sectors.
Original language | English |
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Pages (from-to) | 7933-7940 |
Number of pages | 8 |
Journal | Geophysical Research Letters |
Volume | 42 |
Issue number | 19 |
DOIs | |
Publication status | Published - 16 Oct 2015 |
Keywords
- acceleration pulses
- core-mantle boundary
- geomagnetic jerk
- main field modeling
- quasi-definitive data