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Pohnpei近海の環礁周辺の海況と漁況


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Title: Pohnpei近海の環礁周辺の海況と漁況
Other Titles: Tuna Fishing Ground and Oceanographic Condition of Atolls around Pohnpei, The Federated States of Micronesia
Authors: 秋重, 祐章 / 吉村, 浩 / 西田, 英明 / 久野, 俊行 / 森井, 康宏 / 加藤, 重一
Authors (alternative): Akishige, Yusho / Yoshimura, Hiroshi / Nishida, Hideaki / Kuno, Toshiyuki / Morii, Yasuhiro / Katoh, Juichi
Issue Date: Mar-1991
Publisher: 長崎大学水産学部
Citation: 長崎大学水産学部研究報告, v.69, pp.35-41; 1991
Abstract: On information received that Micronesian fishermen are recently catching the yellowfin tuna Thunnus albacares by vertical hand-line fishing within few nautical miles around some atolls near Pohnpei (formerly known as Ponape), we made the oceanographic observation around Ant and Pakin Atolls in November 1989. Both the atolls are located about 20-30 nautical miles from Pohnpei Harbor, the former being 22 and the latter being 12 nautical miles in circumference. The deep sea aproaches close to the atolls, the depths 0.5 nautical miles off the coast attain 400-500m. The minimum value of the dissolved oxygen, about 1ml/L, was observed at 300m layer. The ship's drift proved the existance of the current flowing in the direction of ESE. The yellowfin tuna were being caught just off the northern and southern causts of Ant Atoll. Both the coasts draw a concave arc, and it was found that the onshore current was generated by such a configuration of the coast line. No fishing ground of the yellowfin tuna existed around Pakin Atoll.
Keywords: ポンペイ / Pohnpei / 環礁 / Atoll / 漁場 / Fishing ground / 水深 / Soundings / 水温 / Temperature
URI: http://hdl.handle.net/10069/29884
ISSN: 05471427
Type: Departmental Bulletin Paper
Text Version: publisher
Appears in Collections:第69号

Citable URI : http://hdl.handle.net/10069/29884

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