著者

皆元 国

出版者

鹿児島大学

雑誌

鹿児島大学水産学部紀要 (ISSN:0453087X)

巻号頁・発行日

no.4, 1956-01

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(1) It is possible for us to get good results by this method in the following cases. (a) The relation between latitude and beclination is inappropriate for the ex-meridian observation. (b) The zenith distance of the sun's meridian passage lies within 10 degrees. (c) Special cases such as the tuna fishery by Long-Line in the southern sea. (2) In the above mentioned cases noon position may be fixed by merely observing the sun's meridian passage. (3) Error of the possition between above mentioned method and the ordinary one is not of a great difference.