Shahinaz Yousef
Prof. of Solar Physics and Solar Terrestrial Physics
Astronomy, Space and Meteorology Dept., Faculty of Science, Cairo University, Cairo 12316- Egypt (email)
Astronomy, Space and Meteorology Dept., Faculty of Science, Cairo University, Cairo 12316- Egypt (email)
The relations between sunspot numbers and earthquakes (M ≥ 5) and (M ≥ 8), solar 10.7 cm radio flux and earthquakes, solar proton events and earthquakes, sunspots area and earthquakes during solar cycle 22, from 1986 to 1996 have been analyzed in this paper. It has been found that (1) there is an inverse relation between solar activity and earthquakes activity for M ≥ 5 during solar cycle 22. (2) There is a direct relation between solar activity and earthquakes activity for M ≥ 8 during the maximum of solar cycle 22 and an inverse relation between both at the descending phase of the cycle.