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題 名 | Fishing Ground Formation of Larval Anchovy in Relation to Oceanographic and Meteorological Conditions in the I-Lan Bay of Northeastern Taiwan=宜蘭灣仔鯷漁場形成與海況及氣象變化之關係 |
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作 者 | 夏光耀; 李國添; 李明安; | 書刊名 | 臺灣水產學會刊 |
卷 期 | 25:4 1998.12[民87.12] |
頁 次 | 頁239-249 |
分類號 | 439.2 |
關鍵詞 | 鯷科稚魚; 漁場形成; 衛星遙測; 表水溫; Larval anchovy; Fishing ground formation; Satellite remote sensing; Sea surface temperature; |
語 文 | 英文(English) |
中文摘要 | 臺灣東北部宜蘭灣海域隨季節之不同,及氣壓鋒面之消長,而會有不同來源的水 團形成,若能迅速且有效的掌握這些水團隨海況及氣象的變動,即可究明仔鯷來游及其漁場 形成之原因。本研究分別蒐集了宜蘭灣海域 1995 年春漁期及 1996 年秋漁期,仔鯷漁獲量 資料、漁獲標本、衛星表水溫影像資料及天氣圖,以解析仔鯷來游及漁場形成與海況及氣象 變動之關係。結果顯示,春漁期時,隨著中國大陸冷高壓的南移,東北季風增強,鋒面逐漸 向臺灣北部陸地靠近, 東海南部之大陸沿岸冷水會侵入宜蘭灣內, 冷水性的日本鯷 (Engraulis japonicus) 也於此時來游。反之秋漁期時,隨著西南季風增強,黑潮主軸逼近 宜蘭灣,暖水性的公鯷 (Encrasicholina punctifer and E. heteroloba) 也隨之來游至灣 內。 |
英文摘要 | Daily catch, species composition and length frequency distribution of larval anchovy were analyzed, and daily changes in satellite surface temperature images, and weather charts were monitored for the spring fishing season, April to May, 1995, and the autumn fishing season, August to September, 1996, to understand the mechanisms on fishing ground formation and migration of the larval anchovy in the I-Lan Bay northeastern Taiwan. The spring fishing season coincided with the northeast monsoon, when air front and cold China Coastal Current moved southward and intruded into the bay under the influence of high air pressure system. The catches in spring was constituted mainly by Engraulis japonicus. The autumn fishing season coincided with the southwest monsoon, and when the warm Kuroshio Current intruded into the bay. The catches in autumn were constituted mainly by Encrasicholina punctifer and Encrasicholina heteroloba. |
本系統中英文摘要資訊取自各篇刊載內容。