Comparative investigation of geomagnetic jerks across the SAA during the period 
2010-2020

Nel, Amore; Kotzé, Pieter

doi:10.57757/IUGG23-4395

Item

ITEM ACTIONSEXPORT

Add to Basket

Local TagsRelease HistoryDetailsSummary

Released

Conference Paper

Comparative investigation of geomagnetic jerks across the SAA during the period 2010-2020

Authors

Nel, Amore
IUGG 2023, General Assemblies, 1 General, International Union of Geodesy and Geophysics (IUGG), External Organizations;

Kotzé, Pieter
IUGG 2023, General Assemblies, 1 General, International Union of Geodesy and Geophysics (IUGG), External Organizations;

External Ressource

No external resources are shared

Fulltext (public)

There are no public fulltexts stored in GFZpublic

Supplementary Material (public)

There is no public supplementary material available

Citation

Nel, A., Kotzé, P. (2023): Comparative investigation of geomagnetic jerks across the SAA during the period 2010-2020, XXVIII General Assembly of the International Union of Geodesy and Geophysics (IUGG) (Berlin 2023).
https://doi.org/10.57757/IUGG23-4395

Cite as: https://gfzpublic.gfz-potsdam.de/pubman/item/item_5021826

Abstract

This study aims to investigate geomagnetic jerks across the South Atlantic Anomaly during the period 2010-2020. Geomagnetic field data from magnetic observatories located in and adjacent to the South Atlantic Anomaly have been analysed to identify abrupt secular variation changes on time scales of less than 1 year. INTERMAGNET observatories such as Vassouras, Tristan da Cunha, and Port Stanley are included. Twelve-month differences of the respective observatory monthly mean of the eastward component Y was determined and external field corrections applied by means of the CHAOS-7.8 model. The observations were subsequently compared to the IGRF-13 and CHAOS-7.8 spherical harmonic models.