A PRELIMINARY REPORT ON COSMIC-RAYS AND BALLOON OBSERVATIONS BY THE 10TH JAPANESE ANTARCTIC RESEARCH EXPEDITION IN 1968-1970
The 10th Japanese Antarctic Research Expedition carried out the following observations during the period of 1968-1970. The latitude dependence of cosmic-ray intensities was observed aboard the icebreaker FUJI along her route from Japan to Syowa Station, Antarctica, in 1968-1969. This latitude survey...
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National Institute of Polar Research
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ftdoajarticles:oai:doaj.org/article:a142b07196c0477ba895037dfe6b3388 2023-05-15T13:53:08+02:00 A PRELIMINARY REPORT ON COSMIC-RAYS AND BALLOON OBSERVATIONS BY THE 10TH JAPANESE ANTARCTIC RESEARCH EXPEDITION IN 1968-1970 Koichi OGURA 1971-03-01T00:00:00Z https://doi.org/10.15094/00007612 https://doaj.org/article/a142b07196c0477ba895037dfe6b3388 EN JA eng jpn National Institute of Polar Research https://doi.org/10.15094/00007612 https://doaj.org/toc/0085-7289 https://doaj.org/toc/2432-079X doi:10.15094/00007612 0085-7289 2432-079X https://doaj.org/article/a142b07196c0477ba895037dfe6b3388 Antarctic Record, Iss 40, Pp 22-33 (1971) Geography (General) G1-922 article 1971 ftdoajarticles https://doi.org/10.15094/00007612 2022-12-31T11:36:27Z The 10th Japanese Antarctic Research Expedition carried out the following observations during the period of 1968-1970. The latitude dependence of cosmic-ray intensities was observed aboard the icebreaker FUJI along her route from Japan to Syowa Station, Antarctica, in 1968-1969. This latitude survey was made for three components, i. e., cosmic-ray neutron, meson and total ionizing components. For a month from January 14, 1969, simultaneous balloon observations of the geomagnetic conjugacy of auroral X-rays were attempted at Syowa Station and Keflavik, Iceland. Only three of ten Syowa flights completely coincided in time with some of the Keflavik flights, so that the overlapping observation time was about 20 hours. A number of examples of interesting auroral X-ray events were detected in all of the flights. The continuous observation of cosmic-ray neutron intensity was carried out using the 12-NM-64 neutron monitor with multiplicity meters after adding two neutron counters to the previous 10-NM-64 neutron monitor. The cosmic-ray unusual increase was observed on February 25 and again on March 30, 1969. Another balloon observation was made by using a BF_3 neutron counter in order to observe an altitude dependence of the low energy atmospheric neutron intensity at high latitudes. This report gives a brief summary of the above-mentioned observations and some preliminary results. Article in Journal/Newspaper Antarc* Antarctic Antarctica Iceland Directory of Open Access Journals: DOAJ Articles Antarctic Syowa Station |
institution |
Open Polar |
collection |
Directory of Open Access Journals: DOAJ Articles |
op_collection_id |
ftdoajarticles |
language |
English Japanese |
topic |
Geography (General) G1-922 |
spellingShingle |
Geography (General) G1-922 Koichi OGURA A PRELIMINARY REPORT ON COSMIC-RAYS AND BALLOON OBSERVATIONS BY THE 10TH JAPANESE ANTARCTIC RESEARCH EXPEDITION IN 1968-1970 |
topic_facet |
Geography (General) G1-922 |
description |
The 10th Japanese Antarctic Research Expedition carried out the following observations during the period of 1968-1970. The latitude dependence of cosmic-ray intensities was observed aboard the icebreaker FUJI along her route from Japan to Syowa Station, Antarctica, in 1968-1969. This latitude survey was made for three components, i. e., cosmic-ray neutron, meson and total ionizing components. For a month from January 14, 1969, simultaneous balloon observations of the geomagnetic conjugacy of auroral X-rays were attempted at Syowa Station and Keflavik, Iceland. Only three of ten Syowa flights completely coincided in time with some of the Keflavik flights, so that the overlapping observation time was about 20 hours. A number of examples of interesting auroral X-ray events were detected in all of the flights. The continuous observation of cosmic-ray neutron intensity was carried out using the 12-NM-64 neutron monitor with multiplicity meters after adding two neutron counters to the previous 10-NM-64 neutron monitor. The cosmic-ray unusual increase was observed on February 25 and again on March 30, 1969. Another balloon observation was made by using a BF_3 neutron counter in order to observe an altitude dependence of the low energy atmospheric neutron intensity at high latitudes. This report gives a brief summary of the above-mentioned observations and some preliminary results. |
format |
Article in Journal/Newspaper |
author |
Koichi OGURA |
author_facet |
Koichi OGURA |
author_sort |
Koichi OGURA |
title |
A PRELIMINARY REPORT ON COSMIC-RAYS AND BALLOON OBSERVATIONS BY THE 10TH JAPANESE ANTARCTIC RESEARCH EXPEDITION IN 1968-1970 |
title_short |
A PRELIMINARY REPORT ON COSMIC-RAYS AND BALLOON OBSERVATIONS BY THE 10TH JAPANESE ANTARCTIC RESEARCH EXPEDITION IN 1968-1970 |
title_full |
A PRELIMINARY REPORT ON COSMIC-RAYS AND BALLOON OBSERVATIONS BY THE 10TH JAPANESE ANTARCTIC RESEARCH EXPEDITION IN 1968-1970 |
title_fullStr |
A PRELIMINARY REPORT ON COSMIC-RAYS AND BALLOON OBSERVATIONS BY THE 10TH JAPANESE ANTARCTIC RESEARCH EXPEDITION IN 1968-1970 |
title_full_unstemmed |
A PRELIMINARY REPORT ON COSMIC-RAYS AND BALLOON OBSERVATIONS BY THE 10TH JAPANESE ANTARCTIC RESEARCH EXPEDITION IN 1968-1970 |
title_sort |
preliminary report on cosmic-rays and balloon observations by the 10th japanese antarctic research expedition in 1968-1970 |
publisher |
National Institute of Polar Research |
publishDate |
1971 |
url |
https://doi.org/10.15094/00007612 https://doaj.org/article/a142b07196c0477ba895037dfe6b3388 |
geographic |
Antarctic Syowa Station |
geographic_facet |
Antarctic Syowa Station |
genre |
Antarc* Antarctic Antarctica Iceland |
genre_facet |
Antarc* Antarctic Antarctica Iceland |
op_source |
Antarctic Record, Iss 40, Pp 22-33 (1971) |
op_relation |
https://doi.org/10.15094/00007612 https://doaj.org/toc/0085-7289 https://doaj.org/toc/2432-079X doi:10.15094/00007612 0085-7289 2432-079X https://doaj.org/article/a142b07196c0477ba895037dfe6b3388 |
op_doi |
https://doi.org/10.15094/00007612 |
_version_ |
1766258082702163968 |