Authors:
A. Ádám Geodetic and Geophysical Research Institute of the Hungarian Academy of Sciences Geophysics Department POB 5 H-9401 Sopron Hungary

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P. Bencze Geodetic and Geophysical Research Institute of the Hungarian Academy of Sciences Geophysics Department POB 5 H-9401 Sopron Hungary

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J. Bór Geodetic and Geophysical Research Institute of the Hungarian Academy of Sciences Geophysics Department POB 5 H-9401 Sopron Hungary

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B. Heilig Eötvös Loránd Geophysical Institute Columbus u. 17-23 H-1145 Budapest Hungary

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Á. Kis Geodetic and Geophysical Research Institute of the Hungarian Academy of Sciences Geophysics Department POB 5 H-9401 Sopron Hungary

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A. Koppán Geodetic and Geophysical Research Institute of the Hungarian Academy of Sciences Geophysics Department POB 5 H-9401 Sopron Hungary

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K. Kovács Geodetic and Geophysical Research Institute of the Hungarian Academy of Sciences Geophysics Department POB 5 H-9401 Sopron Hungary

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I. Lemperger Geodetic and Geophysical Research Institute of the Hungarian Academy of Sciences Geophysics Department POB 5 H-9401 Sopron Hungary

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F. Märcz Geodetic and Geophysical Research Institute of the Hungarian Academy of Sciences Geophysics Department POB 5 H-9401 Sopron Hungary

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D. Martini
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A. Novák Geodetic and Geophysical Research Institute of the Hungarian Academy of Sciences Geophysics Department POB 5 H-9401 Sopron Hungary

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G. Sátori Geodetic and Geophysical Research Institute of the Hungarian Academy of Sciences Geophysics Department POB 5 H-9401 Sopron Hungary

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S. Szalai Geodetic and Geophysical Research Institute of the Hungarian Academy of Sciences Geophysics Department POB 5 H-9401 Sopron Hungary

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L. Szarka Geodetic and Geophysical Research Institute of the Hungarian Academy of Sciences Geophysics Department POB 5 H-9401 Sopron Hungary

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J. Verő Geodetic and Geophysical Research Institute of the Hungarian Academy of Sciences Geophysics Department POB 5 H-9401 Sopron Hungary

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V. Wesztergom Geodetic and Geophysical Research Institute of the Hungarian Academy of Sciences Geophysics Department POB 5 H-9401 Sopron Hungary

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B. Zieger
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The paper describes research in geomagnetism and aeronomy carried out in the framework of a project organized by the Geodetic and Geophysical Research Institute of the Hungarian Academy of Sciences. It includes the development of the instrumentation of the Nagycenk Geophysical Observatory (geomagnetic measuring systems, ionosonde), moreover other instrumental and methodological developments, too. Observatory data are available in a database. Based on results of the Nagycenk and Tihany observatories and on data of permanent and temporal networks, long-term trends of different electromagnetic parameters were investigated. Thus geomagnetic activity was found secularly increasing, a decrease of the atmospheric electric potential gradient and a 11-year modulation of the winter/December attenuation of the geomagnetic pulsation activity were confirmed. Several possibilities (pulsations, whistlers, modelling) were used to improve knowledge about structure and parameters of the magnetosphere. Electromagnetic precursors of earthquakes were looked for. A significant increase of understanding was obtained in connection with Schumann resonances and electromagnetic transients caused by lightning. It was shown that see-coasts influence characteristically changes in ionospheric trends ( hm F2). When looking for the effect of the global climate changes in the subsurface electric resistivity, an example was discovered for the decrease of the resistivity due to infiltrating water from precipitation. Electromagnetic exploration of tectonically conditioned weak zones was continued, too.

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Acta Geodaetica et Geophysica
Language English
Size B5
Year of
Foundation
2013
Volumes
per Year
1
Issues
per Year
4
Founder Magyar Tudományos Akadémia
Founder's
Address
H-1051 Budapest, Hungary, Széchenyi István tér 9.
Publisher Akadémiai Kiadó Springer
Nature Switzerland AG
Publisher's
Address
H-1117 Budapest, Hungary 1516 Budapest, PO Box 245.
CH-6330 Cham, Switzerland Gewerbestrasse 11.
Responsible
Publisher
Chief Executive Officer, Akadémiai Kiadó
ISSN 2213-5812 (Print)
ISSN 2213-5820 (Online)

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