Memoirs of the Kakioka Magnetic Observatory Vol.12 No.01， p.1, March, 1965
0bservations of Geomagnetic and Earth-Current Micropulsations with Periods of about 1 cps（T） On the Observing Apparatus of Geomagnetic Micropulsations
Kawamura, M. & Kashiwabara, S.
Abstract
As one of the IQSY program of our observatory, we have planned observations of geomagnetic and earth-current micropulsations with periods ranging between 0.2 and 10 seconds. In the present paper we will describe the observing apparatus of short-period geomagnetic micropulsations, pc-1, pc-2 and the shorter side of pi-1 (≦10 sec.) We have installed those apparatus at Memambetsu (43°55'N, 144°12'E) and Kanoya (31°25'N, 130°53'E) and used for continuous observations.
