著者

柴田 恵司

出版者

長崎大学水産学部

雑誌

長崎大学水産学部研究報告 = Bulletin of the Faculty of Fisheries, Nagasaki University (ISSN:05471427)

巻号頁・発行日

no.1, pp.29-32, 1953-02-28

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Using the same data of the first report, the author investigated the fluctuation of "kidai" catch caused each operating factor. 1. Netting direction: Max. on W, min. on NW. Fig. 1 2. Wind direction: Max. on W, min. on NW Fig. 2 3. Weather: Min. at rain, other normal. Fig. 3 4. Wind force: Max. in 3~4 (Beaufort's wind acale) Fig. 4 5. Hauling depth: Max. in 92~100 meters. Fig. 5 6. Bottom state: Max. in sM, min. in M. Fig. 6 7. Max. at daytime and sunset, min. in night. Fig. 7 All these results are siginificant by F-test (a<0.05).