A statistical study of the decay phase of sunspot groups from 1874 to 1939
A statistical study of the decay of sunspots and sunspot groups is carried out using data contained in the Greenwich Photoheliographic Results. The period studied spans more than six decades, namely from 1874 to 1939. The adequacy of exponential, quadratic and linear decay laws to the area decay data is considered. The dependence, or otherwise, of
Moreno-Insertis, F. et al.
Advertised on:
10
1988