Abstract
<p>The results of geomagnetic field components of the renewed Ukrainian repeat stations (RS) network are presented. The methods of absolute geomagnetic and astro-geodetic measurements are described. The reduction of geomagnetic field components is carried out to the 2005.5 epoch and a catalogue of RS is created. Maps of magnetic declination for the Ukraine are constructed and compared with results calculated by the IGRF-2005 model.</p><p> </p>
Highlights
Investigation of the temporal and spatial structure of the Earth's magnetic field (EMF) is important to solve some fundamental problems in geophysics
One problem is the separation of the Earth magnetic field into contribution from sources of internal and external origin, and the separation of the internal sources into the main field, arising from the dynamo process in the liquid Earth core and a lithospheric field
The results of the second cycle measurements at Ukrainian repeat stations (RS) network were reduced to the epoch 2005.5
Summary
First general magnetic survey in the Ukraine was accomplished during the 1930s and 1940s and the second field campaign in 1969-1972 with a density of 1 point per 400 km. This work was used for the mapping of all components of the geomagnetic field for the territory of the Ukraine and the USSR and for the mapping of the main field for the epoch 1975 year [Krutikhovskaya et al 1982]. Some of these repeat stations were repeated until the year 1985. After 30 years from the last magnetic survey many points of this network were lost For this reason, the goal of this work is to analyze the condition, reviving and increasing the existing RS network in Ukraine.
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