昭和基地における宇宙線シンチレーションの研究(I)
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 d...
| Main Authors: | , , , , , |
|---|---|
| Format: | Report |
| Language: | Japanese |
| Published: |
研究論文
1975
|
| Subjects: | |
| Online Access: | https://nipr.repo.nii.ac.jp/?action=repository_uri&item_id=7829 http://id.nii.ac.jp/1291/00007829/ https://nipr.repo.nii.ac.jp/?action=repository_action_common_download&item_id=7829&item_no=1&attribute_id=18&file_no=1 |
| Summary: | 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. |
|---|