Cyclic variations of the DP/DR parameter of the variable geomagnetic field

Details Cyclic variations of the DP/DR parameter of the variable geomagnetic field Cyclic variations of the DP/DR parameter of the variable geomagnetic field

Dec 1986

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1986ge%26ae..26..970z&link_type=abstract

Geomagnetizm i Aeronomiia (ISSN 0016-7940), vol. 26, Nov.-Dec. 1986, p. 970-974. In Russian.

Physics

Geomagnetism, Ionospheric Currents, Ionospheric Disturbances, Magnetic Storms, Solar Activity Effects, Magnetospheric Instability, Ring Currents, Solar Cycles

Scientific paper

Multiyear series of indices of geomagnetic disturbance and radio absorption in the midlatitude ionosphere are analyzed. It is shown that a fixed value of the mean diurnal magnetic activity in the auroral region (the DP field) corresponds to a more intense ring current (the DR field) during the maximum period of the 11-year solar cycle than in the minimum period. The cyclic variation of DP/DR is characterized by a maximum during the minimum period of sunspot formation. It is concluded that, as solar activity increases, there is an increase in the energy of the magnetospheric ring current and a decrease in the energy of the polar ionospheric current system.

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