Connections between whistlers and pulsation activity

Simultaneous whistler records of one station and geomagnetic pulsation (Pc3 ) records at three stations were compared. In a previous study correlation was found between occurrence and L value of propagation/excitation for the two phenomena. The recently investigated simultaneous records have shown th at the correlation is better on longer time scales (days) than on shorter o nes (minutes), but the L values of the propagation of whistlers/excitation of pulsations are correlated, i.e. if whistlers propagate in higher latitud e ducts, pulsations have periods longer than in the case when whistlers pro pagate in lower latitude ducts.