Studies of Cosmic-Ray Scintillations Observed at Syowa Station, Antarctica (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...
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National Institute of Polar Research
1975
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fttriple:oai:gotriple.eu:oai:doaj.org/article:9e0a9f95446a4c78b95eacbec77312a2 2023-05-15T13:48:38+02:00 Studies of Cosmic-Ray Scintillations Observed at Syowa Station, Antarctica (I) Masatoshi KITAMURA Hiroshi IKEGAMI Masahiro KODAMA 1975-12-01 https://doi.org/10.15094/00007829 https://doaj.org/article/9e0a9f95446a4c78b95eacbec77312a2 en other eng National Institute of Polar Research doi:10.15094/00007829 0085-7289 2432-079X https://doaj.org/article/9e0a9f95446a4c78b95eacbec77312a2 undefined Antarctic Record, Iss 54, Pp 1-17 (1975) geo Journal Article https://vocabularies.coar-repositories.org/resource_types/c_6501/ 1975 fttriple https://doi.org/10.15094/00007829 2023-01-22T19:34:14Z 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 Article in Journal/Newspaper Antarc* Antarctica Unknown Syowa Station |
institution |
Open Polar |
collection |
Unknown |
op_collection_id |
fttriple |
language |
English |
topic |
geo |
spellingShingle |
geo Masatoshi KITAMURA Hiroshi IKEGAMI Masahiro KODAMA Studies of Cosmic-Ray Scintillations Observed at Syowa Station, Antarctica (I) |
topic_facet |
geo |
description |
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 |
format |
Article in Journal/Newspaper |
author |
Masatoshi KITAMURA Hiroshi IKEGAMI Masahiro KODAMA |
author_facet |
Masatoshi KITAMURA Hiroshi IKEGAMI Masahiro KODAMA |
author_sort |
Masatoshi KITAMURA |
title |
Studies of Cosmic-Ray Scintillations Observed at Syowa Station, Antarctica (I) |
title_short |
Studies of Cosmic-Ray Scintillations Observed at Syowa Station, Antarctica (I) |
title_full |
Studies of Cosmic-Ray Scintillations Observed at Syowa Station, Antarctica (I) |
title_fullStr |
Studies of Cosmic-Ray Scintillations Observed at Syowa Station, Antarctica (I) |
title_full_unstemmed |
Studies of Cosmic-Ray Scintillations Observed at Syowa Station, Antarctica (I) |
title_sort |
studies of cosmic-ray scintillations observed at syowa station, antarctica (i) |
publisher |
National Institute of Polar Research |
publishDate |
1975 |
url |
https://doi.org/10.15094/00007829 https://doaj.org/article/9e0a9f95446a4c78b95eacbec77312a2 |
geographic |
Syowa Station |
geographic_facet |
Syowa Station |
genre |
Antarc* Antarctica |
genre_facet |
Antarc* Antarctica |
op_source |
Antarctic Record, Iss 54, Pp 1-17 (1975) |
op_relation |
doi:10.15094/00007829 0085-7289 2432-079X https://doaj.org/article/9e0a9f95446a4c78b95eacbec77312a2 |
op_rights |
undefined |
op_doi |
https://doi.org/10.15094/00007829 |
_version_ |
1766249527731290112 |