caa a22 4500 445345659 CHVBK 20180317142828.0 cr unu---uuuuu 170323e20110101xx s 000 0 eng 10.1007/s11207-010-9665-6 doi (NATIONALLICENCE)springer-10.1007/s11207-010-9665-6 Width of Sunspot Generating Zone and Reconstruction of Butterfly [Elektronische Daten] [V. Ivanov, E. Miletsky] Based on the extended Greenwich - NOAA/USAF catalogue of sunspot groups, it is demonstrated that the parameters describing the latitudinal width of the sunspot generating zone (SGZ) are closely related to the current level of solar activity, and the growth of the activity leads to the expansion of the SGZ. The ratio of the sunspot number to the width of the SGZ shows saturation at a certain level of the sunspot number, and above this level the increase of the activity takes place mostly due to the expansion of the SGZ. It is shown that the mean latitudes of sunspots can be reconstructed from the amplitudes of solar activity. Using the obtained relations and the group sunspot numbers by Hoyt and Schatten (Solar Phys. 179, 189, 1998), the latitude distribution of sunspot groups ("the Maunder butterfly diagram”) for the eighteenth and the first half of the nineteenth centuries is reconstructed and compared with historical sunspot observations. Springer Science+Business Media B.V., 2010 Solar cycle, observations nationallicence Sunspots, statistics nationallicence Ivanov V. Central Astronomical Observatory at Pulkovo, Saint-Petersburg, Russia aut Miletsky E. Central Astronomical Observatory at Pulkovo, Saint-Petersburg, Russia aut Solar Physics Springer Netherlands 268/1(2011-01-01), 231-242 0038-0938 268:1<231 2011 268 11207 https://doi.org/10.1007/s11207-010-9665-6 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/s11207-010-9665-6 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Ivanov V. Central Astronomical Observatory at Pulkovo, Saint-Petersburg, Russia aut NATIONALLICENCE 700 1- Miletsky E. Central Astronomical Observatory at Pulkovo, Saint-Petersburg, Russia aut NATIONALLICENCE 773 0- Solar Physics Springer Netherlands 268/1(2011-01-01), 231-242 0038-0938 268:1<231 2011 268 11207 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer