ショウワキチ ニ オケル ウチュウセン シンチレーション ノ ケンキュウ 1

• Main Authors: 北村, 正亟, キタムラ, マサトシ, 池上, 比呂志, イケガミ, ヒロシ, 小玉, 正弘, コダマ, マサヒロ, KITAMURA, Masatoshi, IKEGAMI, Hiroshi, KODAMA, Masahiro
• Language: Japanese
• Published: 国立極地研究所 1975
• Subjects: 551.5; Syowa Station; Antarc*; Antarctica
• Online Access: https://nipr.repo.nii.ac.jp/record/7829/files/KJ00002476932.pdf; https://doi.org/10.15094/00007829; https://nipr.repo.nii.ac.jp/records/7829

P(論文) Using 5-minute data of cosmic-ray neutron and meson intensities observed at Syowa Station, Antarctica in July and December 1970, short term variations covering the periods from 10 to 120 minutes have been investigated by a tool of sonagraph-type analyzer, in terms of enhancements in spectral power density as a function of time. Dynamic spectra thereby deduced show that there occurred, for the neutron component alone, seven times the enhanced cosmic-ray scintillations (called ECS) which exhibit the period of a few ten minutes with the persistent time from a few hours to one day. It is also shown that ECS events are not related to solar-terrestrial phenomena but to atmospheric pressure and wind velocity disturbances in the upper atmosphere. The presently observed ECS events are not of the extra-terrestrial origin but of the atmospheric origin. departmental bulletin paper