文献一覧: Shin FUKUSHIMA (著者)

2 0 0 0 OA REPORT ON RESULTS OF COSMIC-RAY OBSERVATIONS AT SYOWA BASE DURING 1957-58

著者: 北村泰一福島紳小玉正弘 Taiichi KITAMURA Shin FUKUSHIMA Masahiro KODAMA
雑誌: 南極資料 (ISSN:00857289)
巻号頁・発行日: vol.6, pp.301-321, 1959-01

2019-04-07 13:14:46
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1 0 0 0 OA 第4次南極地域観測隊宇宙線部門船上観測報告(超高層物理部門)(<特集>南極シンポジウム)

著者: 福島紳中村強 Shin FUKUSHIMA Tsuyoshi NAKAMURA
雑誌: 南極資料 (ISSN:00857289)
巻号頁・発行日: vol.11, pp.885-893, 1961-01

The third latitude survey in cosmic-ray neutrons has been carried out along the same ship-route and by using the same apparatus as in the preceeding two surveys. Although the observation room was the same as that in the second survey, one additional room was constructed over our room. Thus, as observational conditions in the three latitude surveys are different from one another, the obtained results could not be compared in absolute intensity but in relative. The periods during which each survey was performed are represented with the corresponding sunspot relative numbers in Fig. 1, where a full curve shows the 12 months running average of monthly mean values in sunspot numbers. Fig. 2 shows 12 hour mean values for each latitude curve in the southern hemisphere. It is seen from the figure that the slope of latitude curve becomes gentle at the second survey and then almost recovers at the third. To explain such changes in primary cosmic-rays by terms of changes in solar activity represented by sunspot numbers as shown in Fig. 1, we suppose a hysteresis effect of solar activity upon cosmic-rays. In other words, changes in cosmic-rays do not immediately follow that in solar activity but about half a year later.

2018-02-03 04:29:01
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http://id.nii.ac.jp/1291/00007052/

1 0 0 0 OA Cosmic-Ray Neutron Monitor at Syowa Base, Antarctica (UPPER ATMOSPHERE PHYSICS) (<Special Publication>Antarctic Symposium in Tokyo, 1960)

著者: 福島紳小玉正弘宮崎友喜雄 Shin FUKUSHIMA Masahiro KODAMA Yukio MIYAZAKI
雑誌: 南極資料 (ISSN:00857289)
巻号頁・発行日: vol.11, pp.894-898, 1961-01

当初,南極観測用に製作された宇宙線中性子観測装置は,IGY用として設計されたもので,全体の重量が6トンを超えるため,ヘリコプター輸送に適さない.そこで重量軽減化の方法として,(1)ニュートロン減速剤として,パラフィンの代りに現地の海水を利用する.(2)真空管方式の増幅,計数装流をすべてトランジスター化する.の2点から,新しい観測装置を製作した.この装置は重量約500kgで,第4次観測隊により無事基地へ空輪された.観測は1960年3月3日より開始された.観測結果の一部として,日平均値の変化及び5月4日の宇宙線異常増加の結果を示した.