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# C - Geomagnetism

Results of Geomagnetic Observations, Belsk Geophysical Observatory 2004

**Author(s):**Marianiuk J., Neska M., Reda J.

**Volume:**379

**Series:**C-92

This publication contains results of geomagnetic observations performed in 2004; it is a consecutive, thirty-ninth issue in the series of yearbooks listing observations of the natural magnetic field of the Earth at the Central Geophysical Observatory at Belsk.

Results of Geomagnetic Observations, Hel Geophysical Observatory 2003

**Author(s):**Czyszek A., Czyszek J.

**Volume:**370

**Series:**C-91

This volume contains the results of observations of the Earth magnetic field for the year 2003, carried out at the Geophysical Observatory at Hel near Gdańsk. It is a consecutive twenty-sixth report of similar results published since 1966.

Results of Geomagnetic Observations, Polish Polar Station, Hornsund, Spitsbergen, 2003

**Author(s):**Glegolski W., Gnoiński A.

**Volume:**369

**Series:**C-90

This volume contains the results of observations of the Earth's magnetic field carried out at the Polish Polar Station Hornsund in Spitsbergen in the year 2003.

Results of Geomagnetic Observations, Belsk 2003

**Author(s):**Marianiuk J., Reda J.

**Volume:**368

**Series:**C-89

This publication contains results of geomagnetic observations performed in 2003; it is consecutive, thirty-eighth issue in the series of yearbooks listing observations of the natural magnetic field of the Earth at the Central Geophysical Observatory at Belsk.

New Methods for Parameterization and Determination of Transfer Functions and Impulse Responses

**Author(s):**Nowożyński K.

**Volume:**364

**Series:**C-88

Solar radiation gives rise to the primary (external) electric current systems in the magnetosphere and ionosphere of the Earth. Within the Earth, which is a good conductor of electricity, the electromagnetic induction produces a secondary system of currents, dependent, among other things, on the conductivity distribution in the Earth's interior. The electromagnetic field observed at the Earth's surface originates from these two sources. We will consider here a simplified model, in which the Earth's surface is flat. Such an approximation is correct if we adopt a lower limit for the frequencies we consider.