Geophysical Center of the Russian Academy of Sciences performed digitization of IZMIRAN catalogues containing historical data of magnetic satellite missions Kosmos‐49 (1964) and Kosmos‐321 (1970).
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| External view of Kosmos-321 and Kosmos-356 from Krasnoperov et al. 2020. |
Totally 17300 measured values are available for Kosmos‐49 mission, covering homogeneously 75% of the Earth's surface between 49° north and south latitude. About 5000 measured values are available for Kosmos‐321 mission, covering homogeneously 94% of the Earth's surface between 71° north and south latitude.
The mission of Kosmos‐26 and Kosmos‐49 confirmed the possibility of using Earth’s magnetic field data for determination of spacecraft orientation. The obtained geomagnetic data justified the evidence of propagation of magnetic anomalies, associated with the structure and tectonics of the Earth’s crust, to the heights of low‐ orbiting satellites.
In 2020, these results were presented to the scientific community in the ESSD data paper “Early Soviet satellite magnetic field measurements in the years 1964 and 1970” by Krasnoperov R., Peregoudov D., Lukianova R., Soloviev A., Dzeboev B. (https://doi.org/10.5194/essd‐12‐555‐2020). The value of the presented data is emphasized by the fact that older and publicly available global satellite data on the Earth's magnetic field in digital form for that period are rare and hard to acquire.
Contributed by the Chair of the Interdivisional Commission on History, Dr. Anatoly Soloviev, from the Geophysical Center, Russian Academy of Sciences, Moscow. The Commission encourages historical geophysical research and preservation of IAGA's history.
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