Articles | Volume 10, issue 1
Hist. Geo Space. Sci., 10, 163–172, 2019
https://doi.org/10.5194/hgss-10-163-2019
© Author(s) 2019. This work is distributed under
the Creative Commons Attribution 4.0 License.
the Creative Commons Attribution 4.0 License.
Special issue: The International Union of Geodesy and Geophysics: from different...
Review article 16 Apr 2019
Review article | 16 Apr 2019
IAGA: a major role in understanding our magnetic planet
Mioara Mandea and Eduard Petrovský
Related authors
Roman Sidorov, Anatoly Soloviev, Alexei Gvishiani, Viktor Getmanov, Mioara Mandea, Anatoly Petrukhin, and Igor Yashin
Ann. Geophys. Discuss., https://doi.org/10.5194/angeo-2018-111, https://doi.org/10.5194/angeo-2018-111, 2018
Manuscript not accepted for further review
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Decidated to the combined analysis of space weather data (geomagnetic activity, cosmic ray secondaries and ionospheric data) obtained during the September 2017 solar flares and geomagnetic storms, this study is an attempt to construct a technique for circumterrestrial physical data analysis in order to analyze various space weather effects and obtain new mutually supportive information during major space weather events on different phases of geomagnetic storm evolution.
Venera Dobrica, Crisan Demetrescu, and Mioara Mandea
Solid Earth, 9, 491–503, https://doi.org/10.5194/se-9-491-2018, https://doi.org/10.5194/se-9-491-2018, 2018
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By analyzing frequency constituents of declination secular variation at inter-decadal and sub-centennial timescales from geomagnetic observatories with data longer than 1 century and several historical data sets, we suggest that the geomagnetic jerk concept should be considered as a more general notion, namely the evolution of the secular variation as a result of the superposition of two (or more) constituents describing the effects of processes in the Earth’s core at two (or more) timescales.
Mioara Mandea and Jean-Louis Le Mouël
Hist. Geo Space. Sci., 7, 73–77, https://doi.org/10.5194/hgss-7-73-2016, https://doi.org/10.5194/hgss-7-73-2016, 2016
Monika Korte and Mioara Mandea
Solid Earth, 7, 751–768, https://doi.org/10.5194/se-7-751-2016, https://doi.org/10.5194/se-7-751-2016, 2016
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We investigated characteristics of magnetic anomalies over southern Africa (South Africa, Namibia, and Botswana) and Germany on different scales and also compared them to gravity gradient anomalies. Such anomalies provide information relevant to understanding geological and tectonic structures. Our results indicate a better agreement between anomalies caused by shallow and deeper structures in the southern African area than in the German area.
G. Verbanac, M. Mandea, M. Bandić, and S. Subašić
Solid Earth, 6, 775–781, https://doi.org/10.5194/se-6-775-2015, https://doi.org/10.5194/se-6-775-2015, 2015
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This study of crustal monthly biases' temporal evolution at 42 geomagnetic observatories over 9 years of the CHAMP satellite mission reveals
short-period variations and long-term trends in the bias time series, signature of the induced magnetic fields, annual trends in most bias series, distinct oscillatory pattern over the whole time span, and semi-annual variations in all components. Swarm mission data and analysis of these findings will allow a better understanding of crustal bias evolution.
A. Khokhlov, J. L. Le Mouël, and M. Mandea
Geosci. Instrum. Method. Data Syst., 2, 1–9, https://doi.org/10.5194/gi-2-1-2013, https://doi.org/10.5194/gi-2-1-2013, 2013
Roman Sidorov, Anatoly Soloviev, Alexei Gvishiani, Viktor Getmanov, Mioara Mandea, Anatoly Petrukhin, and Igor Yashin
Ann. Geophys. Discuss., https://doi.org/10.5194/angeo-2018-111, https://doi.org/10.5194/angeo-2018-111, 2018
Manuscript not accepted for further review
Short summary
Short summary
Decidated to the combined analysis of space weather data (geomagnetic activity, cosmic ray secondaries and ionospheric data) obtained during the September 2017 solar flares and geomagnetic storms, this study is an attempt to construct a technique for circumterrestrial physical data analysis in order to analyze various space weather effects and obtain new mutually supportive information during major space weather events on different phases of geomagnetic storm evolution.
Venera Dobrica, Crisan Demetrescu, and Mioara Mandea
Solid Earth, 9, 491–503, https://doi.org/10.5194/se-9-491-2018, https://doi.org/10.5194/se-9-491-2018, 2018
Short summary
Short summary
By analyzing frequency constituents of declination secular variation at inter-decadal and sub-centennial timescales from geomagnetic observatories with data longer than 1 century and several historical data sets, we suggest that the geomagnetic jerk concept should be considered as a more general notion, namely the evolution of the secular variation as a result of the superposition of two (or more) constituents describing the effects of processes in the Earth’s core at two (or more) timescales.
Mioara Mandea and Jean-Louis Le Mouël
Hist. Geo Space. Sci., 7, 73–77, https://doi.org/10.5194/hgss-7-73-2016, https://doi.org/10.5194/hgss-7-73-2016, 2016
Monika Korte and Mioara Mandea
Solid Earth, 7, 751–768, https://doi.org/10.5194/se-7-751-2016, https://doi.org/10.5194/se-7-751-2016, 2016
Short summary
Short summary
We investigated characteristics of magnetic anomalies over southern Africa (South Africa, Namibia, and Botswana) and Germany on different scales and also compared them to gravity gradient anomalies. Such anomalies provide information relevant to understanding geological and tectonic structures. Our results indicate a better agreement between anomalies caused by shallow and deeper structures in the southern African area than in the German area.
G. Verbanac, M. Mandea, M. Bandić, and S. Subašić
Solid Earth, 6, 775–781, https://doi.org/10.5194/se-6-775-2015, https://doi.org/10.5194/se-6-775-2015, 2015
Short summary
Short summary
This study of crustal monthly biases' temporal evolution at 42 geomagnetic observatories over 9 years of the CHAMP satellite mission reveals
short-period variations and long-term trends in the bias time series, signature of the induced magnetic fields, annual trends in most bias series, distinct oscillatory pattern over the whole time span, and semi-annual variations in all components. Swarm mission data and analysis of these findings will allow a better understanding of crustal bias evolution.
A. Khokhlov, J. L. Le Mouël, and M. Mandea
Geosci. Instrum. Method. Data Syst., 2, 1–9, https://doi.org/10.5194/gi-2-1-2013, https://doi.org/10.5194/gi-2-1-2013, 2013
Short summary
Throughout the International Union of Geodesy and Geophysics' (IUGG's) centennial anniversary, the International Association of Geomagnetism and Aeronomy is holding a series of activities to underline the ground-breaking facts in the area of geomagnetism and aeronomy. Over 100 years, the history of this research is rich, and here we present a short tour through some of the IAGA's major achievements, starting with the scientific landscape before IAGA, through its foundation until the present day.
Throughout the International Union of Geodesy and Geophysics' (IUGG's) centennial anniversary,...