Evidence for a new geomagnetic jerk in 2014

J. Miquel Torta; Francisco Javier Pavón-Carrasco; Santiago Marsal; Chris Finlay

doi:10.1002/2015gl065501

Evidence for a new geomagnetic jerk in 2014

J. Miquel Torta, Francisco Javier Pavón-Carrasco, Santiago Marsal, Chris Finlay

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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
Journal	Geophysical Research Letters
Volume	42
Issue number	19
Pages (from-to)	7933-7940
Number of pages	8
ISSN	0094-8276
DOIs	https://doi.org/10.1002/2015gl065501
Publication status	Published - 2015

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title = "Evidence for a new geomagnetic jerk in 2014",

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.",

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AU - Marsal, Santiago

AU - Finlay, Chris

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AB - 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.

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Evidence for a new geomagnetic jerk in 2014

Abstract

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