Worldwide space-related intensity of activity in the time span 1930 – 2010 considering all the registers found in the specialized literature.





Accumulated Worldwide space-related intensity of activity in the time span 1930 – 2010 considering all the registers found in the specialized literature.





Coordinated unfolding of the 3rd and 4th K-waves with the historical unfolding of the global space-related intensity of activity.