Home – Home – Jornals – Russian Geology and Geophysics 2006 number 2

Systematic monitoring of the geomagnetic field at secular variation and repeat stations was stopped 15 years ago in expectation of satellite measurements. Comparison of secular geomagnetic variations estimated directly from annual observatory data and those inferred from changes of IGRF-modeled components measured at observatories shows that much of information is lost because satellite measurements cannot provide the appropriate monitoring of space and time secular variations and regional observatory networks are scarce in many regions of the world, especially in Siberia. Therefore, systematic monitoring of the geomagnetic field by the system of observatories and secular variation stations should be resumed.