sunspot maximum造句

• For example, the sunspot maximum of 2002 was Carrington Cycle No . 23.
• There seems to be a positive correlation between sunspot maximum and Es activity in Europe.
• Both forms of degradation follow the 11 year solar cycle and are a maximum at sunspot maximum although they can occur at any time.
• In the course of the 11-year solar cycle, the amplitude of Sq increases by a factor of more than two from sunspot minimum to sunspot maximum.
• The last crossing of the zero line was shown to have occurred during the 1947 1948 sunspot maximum, making that epoch of importance to statistical methods designed to remove this secular variation from ionospheric studies.