OBSERVATIONS IN NEW ZEALAND OF GEOMAGNETIC MICROPULSATIONS IN THE 0.008 - 2.0 C/S BAND.

A study from a four channel narrow-band micropulsation apparatus operating in the 0.5 - 2.0 c/s band has been carried out. Both pearls and impulsive signals were found. Results show that pearls occur in association with sudden magnetic storm commencements (SSC's). Narrow-band frequency drifts are also evident in pearl events. Results of broad-band micropulsation studies in the 0.008 - 0.25 c/s band over the period October 1962 to January 1964 reveal solar region activity between the 6th and 9th days of the solar rotation in ten of the seventeen rotations observed. In one case this activity was present for six consecutive rotations, indicating a persistent active region. Preliminary frequency-time analyses of broad-band micropulsations recorded on portable transistorised equipment are also included. (Author)
Legibility of this document is in part unsatisfactory. Reproduction has been made from best available copy.