Mechanically Self-recording Apparatus of Atmospherics

[摘要] It is well known that atmospherics have an intimate relation with thunder storms. The writers tried to construct a mechanically self-recording apparatus of atmospherics in order to obtain some data for the warning or prediction of thunderstorms which are carried on in the summer seson at the Oosaka Branch of Central Met. Observatory. The apparatus is consisted of three parts, an antenna, magnifier and self-recording part. The antenna of ordinary vertical type was about 40m high. The magnifier is also nothing but an ordinary receiving set with capacity feed-back and its tuned wave length is 10km_??_15km. But it is designed so as to be convenient to get mechanical recording. Its wiring is shown in Fig. 1. The recording part is consisted of two, a recording galvanometer and moving cylinder.The former is a moving-coil galvanometer with a long straw stem bearing a pen at its end. This pen draw the continuous record of atmeospherics on the smoked paper wound round a metal cylinder. The cylinder is continually driven by a synchronous motor and at the same time horizontally shifted by the “twisted method” as was used in Mainka's Seismograph. (Fig. 2 and Plate I fig. 1). This apparatus is now working in good order day by day and giving complete data of atmospherics. Some examples of recorded atmospheriecs are shown in Plate II fig. 3 and 4. Discussions on the observed data in connection with meteorological phenomena especially with thunderstorm will be made in the next report.

[学科分类] 大气科学